PALEONTOLOGY. 273 



. A valuable synopsis of the genera, occupying sixteen pages, has been 

 prepared by Charles E. Beecher. The original drawings were all made 

 by George B. Simpson, whose name appears on the title-page, and the 

 author says (p. 10) that " credit is due him for the i)reparation of a large 

 part of the specific descriptions." 



Prof. Charles Barrois (10) presents a review of the above volume in 

 the "Anuales" of tbe "Soci^t6 Geologique du Nord." 



James Hall (98) published in 1888 another valuable contribution to 

 the paleontology of New York State. Although many of tbe species 

 figured have been described before, tbe new descriptions and diagnoses 

 of the species, and better illustrations than have ever appeared before, 

 will be of great value to the student of paleontology. One hundred 

 and forty-four species of Crustacea are described and illustrated, ninety- 

 seven of them Trilobites, the whole included under twenty-eight genera. 

 Tbe author acknowledges the assistance of Mr. John M. Clarke "in the 

 preparation of the matter for the press and in the critical study of the 

 material." A useful synopsis of genera, occupying forty-four pages, pre- 

 cedes the descriptive part of the work. The following new forms are 

 described : 



Genus Dalmanitea : 



Subgenus Hausmannia, n. e.-g., p. xxxi. 

 Coronura, u. s.-g., p. xxxii. 

 Corycephalua, n. s.-g., p. xxxiv. 

 Genus Lichas : 



Subgeuus Cvratolichas, u. s.-g. p. xl. 

 Genus Mcsothyra, uov. gen., p. Ivi, pi. xxxii. 

 Genus lihinocaris, uov. gen., p. Iviii. 

 Genus ScliizodiHcus, no v. gen., p. Ixii. 

 Genus Protobalamis, nov. gen., p. Ixii. 

 Genus Strobilepis, nov. gen., p. Ixiii. 

 Broniem Tullius, p. 12, pi. viii, f. 34-30. 

 I'hacops cristata, viir.pij^a, n. var., p. 18, pi. viiia, f. 5-18. 

 Hausmannia, n. s.-g., p. 28. 



Dalmanites {Hausmannia) concinnus, var. serruJa, u. var., p. 30, pi. xia, f. 12. 

 Dahnanites (Hausmannia) phacoptyx, p. 31, pi. xia, f. 23-26. 

 Coronura, n. s.-g., p. 33. 



Dalmanites (Cryphwus) comis, p. 41, pi. xvia, f. 1. 

 Dalmanitis (Cryphwus) Barriai, p. 48, pi. xvia, f. 18. 

 Corycephalus, n. s.-g., p. 55. 



Dalmanites (Corycephalua) pygmaeua, p. 56, pi. xi, f. .5-8. 

 Dalmanites anchiops, yar.aobrinua, u. var., p. 62, pi. ix, f. 11. 

 Acidaspis callicera, p. 69, pi. xvii», f. 1-13. 

 Acidaspis Jiominijeri, p. 71, pi. xvi6, f. 15-18. 

 Acisdaspis, s[>., p. 71, pi. xvib, f. 14. 



Lichas (VonoUchns) hispidus, p. 77, pi. xixa, f. 14, 17, 18. 

 Lichas ( IloploUchas) hyhcus, p. 81, pi. xix6, f. 1, 2. 

 Lichas (Aryes) contusus, p. 83, pi. xixt, f. 3-6. 

 CeratoUchaa, n. s.-g., p. 84. 



Lichas (Ceratolichas) grypa, p. 84, pi. xix&, f. 7-13. 

 Lichas (Ceratolichas) dracon, p. 85, pi. xixJ, f. 14-17. 



H. Mis. 142 18 



