H 



2 Scientific Intelligence. 



on the post-embryonal development of the European lobster 

 (Homarus vulgaris Edwards). Pie describes and figures in detail 

 the three larval stages corresponding precisely with the first three 

 stages which I have described in the American lobster/" Dr. 

 Sars did not receive my papers until after a part of his memoir 

 was printed, so that his investigations were wholly independent. 

 In a short appendix Dr. Sars calls attention to the remarkable 

 agreement in the results at which we had each arrived, and to the 

 excellent opportunity afforded for a careful comparison of the 

 early stages of these two closely allied species. Although the 

 corresponding stages agree so closely in form and structure, they 

 are from the first readily distinguishable by well marked specific 

 differences in the form and armature of the appendages. In fact, 

 the differences appear gi-eater in the larval stages than in the 

 adults. Dr. Sars was not able to trace the development beyond 

 the third stage, which he had at first supposed could not be the 

 last stage of the larva, but after comparison with the later stage 

 of the American lobster he regards it as quite probably the last 

 true larval stage. s. i. s. 



21. Cumacea from the West Indies and the South Atlantic / by 

 G. O. Sars. 30 pp. 4to, with 6 plates. (From the Svenska Veten- 

 skaps-Akademiens Handlingar, Bandet xi ; Stockholm, 1873.) — 

 This memoir, in the same form as the one on the Cumacea of the 

 Josephine Expedition previously noticed, contains minute descrip- 

 tions and elaborate figures of seven species from the West Indies 

 and from off the mouth of the La Plata. Among them there is a 

 remarkable new genus, Stephanomma, in which there is a large 

 central eye upon the front surrounded by a circle of smaller eyes. 



s. i. s. 



22. Distribution of Insects in New Hampshire ; by Samuel H. 

 Scudder. 50 pp. large 8vo, with 2 maps and a plate. (From 

 vol. i of the Final Report upon the Geology of New Hampshire ; 

 Concord, 1874.) — Mr. Scudder first discusses the boundary between 

 the Alleghanian and Canadian faunae in the State and then the 

 special relations of the alpine and sub-alpine districts of the White 

 Mountains. He makes the Canadian fauna extend to just south of 

 the White Mountains, while the Alleghanian fauna proper occupies 

 only the extreme southern border, the broad intermediate space 

 — about half the area of the State — being regarded as the " com- 

 mon meeting ground" of the two faunae. These divisions and the 

 alpine and sub-alpine districts upon the mountains are indicated 

 by colored areas on the two maps. This introductory portion is 

 followed by lists of the Butterflies and Orthoptera of the State, 

 with many valuable notes on the distribution of the species, and 

 a full account of two White Mountain butterflies, (Eneis semidea 

 and Brenthis Montinus. s. i. s. 



* This Journal, vol. iii, pp. 401-406, plate IX, June, 1872, and Transactions 

 Connecticut Academy, vol. ii, pp. 351-381, plates xiv-xvin, August, 1873. 



