Miscellaneous. 251 



Nervous system. — Tho nervous system is nearly as described by 

 Baudelot in Glepsine. It consists of twenty-one ganglia, not in- 

 cluding tbe collar and the posterior mass. In one type the sub- 

 oesophageal portion of the collar results from a more considerable 

 grouping, and the terminal mass of the chain from a smaller group- 

 ing than in- Glepsine. The number of large cells contained in the 

 vesicles appended to the ganglion is less than is figurod in Baudc- 

 lot's memoir. 



To sum up : — Batrachobdella approaches the GlossipJionice or 

 Clepsinee by its nervous system and its circulatory apparatus, while 

 the general arrangement of the generative organs is rather that 

 which occurs in the Ponbdellce or Pontobdelke ; and the digestive 

 apparatus, although presenting a trunk as in Glepsine, differs from 

 what is seen in all other Hirudin ese by the arrangement of tho caeca 

 and presence of an hepatic inflation. — Gomptes Jtendus, July 14, 

 1879, p. 110. 



Description of a new Species of Chirocephalus. By John - A. Bydek. 



The genus Chirocephalus does not seem to have been noticed up 

 to the present time in North America ; I therefore take much plea- 

 sure in announcing the discovery of a hitherto undescribed species 

 of the genus in the vicinity of Woodbury, New Jersey, where it was 

 found iu abundance in the ditches by Mr. W. P. Seal, a resident of tho 

 place, and an indefatigable collector of the minute life of his neigh- 

 bourhood. 



The genus, as characterized by Dr. Wm. Baird*, has been found 

 in Switzerland, France, England, Bussia, and Siberia. Tho species 

 C. lacunce, most nearly like the one I am about to describe, is figured 

 and described by Guerin, in his ' Iconog. Begne Animale,' as being 

 found at Fontainebleau, France. The differences between our species 

 and Giierin's arc, however, sufficiently striking and constant to 

 characterize a well-marked specific type ; and I accordingly propose 

 the following specific characterization of tho American form : — 



Chirocephalus Holmanii, nov. sp. 



Claspers moderately robust ; second joint forked, longest branch 

 longer than first joint and curved inwards, its tip crossing 

 that of its fellow of the opposite side when in repose ; shorter 

 branch less curved, slightly swollon, and rough on the inner surface 

 of its tip, about half as long as the longer branch. Two long 

 fleshy proboscis-like prehensile organs arise from the bases of the 

 claspers, and are coiled up between the latter ; muscular fibres 

 pass throughout their length ; near their origin and for the first 

 third they are expanded interiorly into a thin margin with about 

 seven papilliform processes ; they then gradually contract, becoming 

 cylindrical at their second third, where about seven well-marked 



* Monograph of the Family BranchipodidaB, Ann. & Mas'. Nat. Hist. 

 2nd ser. vol. xiv. 1854, pp. 21 ('.-220. 



