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NIDA.—These start from highly developed and specialized aquatic branchiferous forms, exhibiting a prosoma with six pedifonn pairs of appendages, an intermediate prae-genital somite, a mesosoma of six somites bearing iamelliform pairs of appendages, and a metas ...

ENID, a city and the county-seat of Garfield county, Oklahoma, U.S.A., about 55 m. N.W. of Guthrie. Pop. (1900) 3444; (1907) 10,087 (355 of negro descent); (1010) 13,799. Enid is served by the St Louis & San Francisco, the Atchison, Topeka & Santa Fe, and the

... h a double (really triple) cell-layer formed by invagination, as in the Eu-arachnida, are present. The Pantopoda stand in the same relation to Limului and Scorpio that Cyamus holds to the thoracostracous Crustacea. The reduction at the organism to seven leg -b ...

... an Arachnid. — Modern views as to the classification and affinities of the Arachnida have been determined by the demonstration that Limulus and the extinct Eurypterines (Pterygotus, &c.) are Arachnida; that is to say, are identical in the structure and relatio ...

ANT-LION, the name given to neuroptcrous insects of the family \fyrmcltonidac, with relatively short and apically clubbed antennae and four large densely reticulated wings in which the apical veins enclose regular oblong spaces. The perfect insects are for the ...

... tolerably firm and hard armour. The order comprises the families Xeniidae, Alcyonidat and Ncphlhyidae. Alcyonium digitatum, a pink digitate form popularly known as " dead men's fingers," is common in 10-20 fathoms of water off the English coasts. In the order ...

... e same time the responsibility for the action then taken attached to the Alcmaeonidae alone, because one of their number, Megacles, was at that time the archon (i.e. responsibility was personal, not collective). Again, the Constitution of Athens says that down ...

... alluvial gold diggings. Antimony is found in large quantities near the town. Annidale is a cathedral town, being the seat of a Roman Catholic bishop and belonging to the joint Anglican diocese of Graf ton; Annidale St Peter's, the Anglican cathedral, and St M ...

ARTHROPODA. The Arachnida form a distinct class or line of descent in the grade Euarthropoda, diverging (perhaps in common at the start with the Crustacea) from primitive Euarthropods, which gave rise also to the separate lines of descent known as the classes ...

... leum which has escaped from outcropping strata. The celebrated Pitch Lake of Trinidad was long regarded as the largest deposit of asphalt in existence, but it is said to be exceeded in area, if not in depth also, by one in Venezuela. The Trinidad " Lake " has ...

... lt by the gentlemen of Augusta " in 1750. In the crypt of the church General Leonidas Polk is buried; and in the churchyard are the graves of George Steptoe Washington, a nephew of George Washington, and of William Longstreet, the inventor. Among the city's pr ...

... characters of internal structure. They are in fact allied to the carps or Cyprinidae and the cat-fishes or Siluridae. In common with these two families and the Characinidac of Africa and South America, the Gymnotidae possess the peculiar structures called oss ...

... inopis). Argiapidae (Nephtla, Gasteracantha). Pholcidae (Pholcus, Artema). Agelenidae (Tegenaria). Lycosidae (Lycosa). Clubionidae (Clubiona, Olios, Sparassus) Gnaphosidae (Gnaphosa, Hemiclaea). Thomisidae (Thomisus). Attidae (Salticus). Urocteidae (Uroctea). ...

... tolerably firm and hard armour. The order comprises the families Xeniidae, Alcyonidat and Ncphlhyidae. Alcyonium digitatum, a pink digitate form popularly known as " dead men's fingers," is common in 10-20 fathoms of water off the English coasts. In the order ...

... ed States, is a compound of iodine and thymol; it is also known as aristol or annidahn. It was introduced as a substitute for iodoform and is stated to be less toxic. Glycothymolin is a proprietary preparation, used in the treatment of catarrhal conditions of ...

... rehends the pedunculate Lepadidae, together with the operculate and sessile Balanidae and Verrucidae; a single species without cirrhi constitutes the order Apoda, and a single species with only three pairs of cirrhi the order Abdominalia. Within the last KoMor ...

... dae, of which the European tree frog is the type, is closely related to the Bufonidae or true roads, being distinguished from them by the presence of teeth in the upper jaw and by the clawlike shape of the terminal phalanx of the digits. It is a large family, ...

... orpio (13). Coxal glands have since been recognized and described in other Arachnida. In 1900 it was shown that the coxal gland of Limulus is provided with a very delicate thin-walled coiled duct which opens, even in the adult condition, by a minute pore on th ...