INVEKTEBKATA, CRYPTOGAMIA, MICROSCOPY, ETC. 875 



New Species of Chirocephalus.*— Mr. John A. Eyder, observing 

 that this genus does not seem to have been noticed in North America, 

 announces the discovery of a hitlierto uudescribed species in New 

 Jersey, where it was found in abundance in the ditches. 



The genus, as characterized by Dr. Baird,t has been found in 

 Switzerh\nd, France, England, Eussia, and Siberia. The species 

 G. lacunce, most nearly like the one now discovered, is figured and 

 described by Guerin in his ' Iconog. Eegue Animal,' as being found 

 at Foutainebleau. The diiferences between the species are, however, 

 sufficiently striking and constant to characterize a well-marked spe- 

 cific type, for which the following characterization is proposed. 



Chirocephalus Holmanii, nov. sp. 



Char, specif. — 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 swollen, and rough on the inner 

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

 fleshy, proboscis-like j)rehensile 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 inferiorly into a thin margin with about seven papilli- 

 form processes ; they then gradually contract, becoming cylindrical 

 at their second third, where about seven well-marked digitiform pro- 

 cesses are found, the longest of which are about as long as twice the 

 diameter of the proboscis at this point ; the remaining third gradually 

 contracts, and is thickly studded with half-rings of small papillse 

 which seem to mark indistinctly the segments of the organ. Total 

 length of the proboscis, when extended, about three times that of the 

 claspers. Total length 12-14 mm. Habitat, Woodbury, New Jersey. 



The specific name is given in honour of Mr. D. S. Holman, in 

 recognition of the services he has rendered in devising methods for 

 studying living objects, both large and small, under the Microscope. 



Reproductive Organs of Non-parasitic Copepoda.| — A mono- 

 graph on this subject is published by Dr. August Gruber, of 

 Freiburg. 



1. Testis and Vas deferens. — The primitively double testis is, in all 

 free forms, a single, usually pear-shaped gland. The vas deferens is 

 always divided into three parts, differing in structure and function. 

 The first portion extends at first backwards from the testis, often has 

 a strong curve forwards at the end of its course, and is provided with 

 a very narrow lumen. The second portion is more or less con- 

 voluted, and differs from the first mainly in being considerably dis 

 tended by the quantities of seminal fluid (Samenmasse) stored up in it ; 



* ' Proc. Acad. Nat. Sci. Philad.,' 1879, p. 148. 



t " Monograph of the Family Branchipodidse," ' Ann and Mag. Nat. Hi^t., 

 xiv. (1854) p. 216. 



; 'Zeitschr. wiss. Zool.,' xxxii. (1879) p. 407. 



