522 Reviews—Haill’s Paleontology of New York. 
Three plates and ten pages of description are given to the 
Limulide and Hurypteride. The former has but a poor repre- 
sentative (Protolimulus Hriensis). Of the latter, Stylonurus excelsior, 
known by a perfect head-shield and portions of its maxillipeds, was 
a veritable giant among Devonian Crustacea, and is well figured in 
two large plates. Other smaller Eurypterids are described and figured. 
The Hquisetides Wrightianus is here referred to Stylonurus ; for that 
genus, however, the three body-segments preserved appear to be 
too slender and cylindrical (see Grou. Mac. 1884, p. 395). We may 
venture also to suggest that Hurypterus Beecheri, with its long slender 
swimming feet, may really belong to the genus Stylonurus (see GEOL. 
Maa. 1888, p. 420). 
Under the PHytiocarripa are given—(1) The Ceratiocaride, with 
Ceratiocaris (3 species), Echinocaris (7 species), Elymocaris (2 species), 
Tropidocaris (8 species); (2) the Pinocaride, with Mesothyra 
(4 species), Dithyrocaris (1 species); (3) the Rhinocaride, with 
Rhinocaris (2 species) ; the Discinocaride, with Spathiocaris 
(1 species), and Dipterocaris (38 species). Under the PHyLLopopa 
we find Estheria and Schizodiscus, of the Limnadiade, each with one 
species. 
Of the species here described ten have been already published by 
Mr. J. M. Clarke, and he now adds seven new species. The genera 
Mesothyra, Rhinocaris, and Schizodiscus are also newly proposed by 
Mr. Clarke. Of the other Phyllocarids most have been described by 
Messrs. Whitfield and Beecher. These interesting, but little-known, 
Devonian Phyllocarids are here conveniently brought together in 
eight excellent plates, with forty-seven pages of description. 
Before leaving the Crustacea, we find twelve pages and one plate 
devoted to the Devonian Cirripedia of the district under notice. 
The most remarkable forms here described belong to the Balanide, 
a division of the group not heretofore noticed in strata earlier than 
the Chalk formation in England, and the Carboniferous of Saxony. 
Two forms of these sessile Cirripeds (Protobalanus, Whitfield, and 
Palgocreusa, Clarke) are figured and described. The latter is found 
imbedded in Fawosites, just as similar living forms are parasitic in 
Corals. 
A new genus of Lepadide (Sérobilepis, J.M.C.), characterized by 
spinous and delicately punctate valves, is figured and described ; 
also eight species of Turrilepas, founded on detached valves. There 
may be a doubt as to the specific distinctness of some of these latter, 
seeing that in the groups of Lepadidal valves found together in 
England several rows of differently shaped valves are associated in 
the test of one individual. Mr. Clarke has evidently noticed this 
condition to a considerable extent in the American forms among the 
detached valves. 
The Supplement of Vol. V. follows the above-mentioned Vol. 
VIL, with an account of various Silurian Pteropods, Annelids, 
and Cephalopods. Yentaculites, Hyolithes, Styliola, Coleolus, and 
Pharetella, as Pteropoda, take 3 pages and 1 plate. The Tubicolar 
Annelids, with 15 pages and three plates, are all grouped as Cornulites. 
