ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 41 



nules. All sorts of intermediates between males and females were seen. 

 The gynandromorphism appears to be induced by conditions of defective 

 nutrition. J. A. T. 



New Parasitic Copepods. — T. Southwell and B. Prashad {Records 

 Indian Museum, 1918, 15, 352-5, 1 pi.). A description is given of 

 the female of Ergasdus bengalensis sp. n. from the gills of Wallago attu. 

 No males were found. Another form, E. hamUioni sp. n., was found on 

 the gills of the climbing* perch, and was represented by females only. 

 Excellent figures are given. J. A. T. 



New Copepod Parasite of Cod. — W. Harold Leigh-Sharpe 

 {Parasitology, 1918, 11, 118-26, 8 figs.). A description is given of 

 ClaveUa sciatherica sp. n., a Lernoeopodid from the mouth, pharynx and 

 branchial region of a cod. It differs from all the twenty-six valid 

 species of ClaveUa in combining several of the prominent characters of 

 other species. Noteworthy is the extreme length of the backwardly 

 arched cephalothorax taken together with the reduction of the " arms " 

 (second maxillse) and their expansion into a disc so that the " bulla " or 

 button appears to be almost directly affixed to the body. Both sexes. 

 were found. J. A. T. 



New Species of Lernaeopoda. — W. Harold Leigh-Sharpe {Para- 

 sitologij, 1918, 11, 18-28, 11 figs. ; and 29-34, 3 figs.). From three 

 dogfishes {Scyllium canimla) there were obtained the females and 

 accompanying males of L. scyllicola sp. n. The male larva is temporarily 

 attached to the fish ; the mature form moves slowly on to the female 

 and remains there. A description is given of the male's appendages, 

 and of its nervous, alimentary, and reproductive systems. From the 

 same host the author obtained L. gloiosa sp. n., and a description of 

 the female is criven. J. A. T. 



o^ 



Life-history of Cyclops. — Esther F. Byrnes {Proc. Amer. Soc. 

 Zool. in Anat. Record, 1919, ,15, 342-3). There are nine stages and 

 eight moults in C. signatus {C. albidus Jurine) and G. americanus 

 Marsh. There is a typical nauplius ; the second stage has a fourth 

 appendage ; the second moult produces indications of the fifth and 

 sixth appendages ; the third moult yields a typical cyclops stage with 

 six antennal segments, mouth-parts as in adult, and unsegmented 

 swimming appendages ; the fourth moult shows seven antennal seg- 

 ments, rami of first and second feet two-jointed ; the fifth moult 

 shows nine antennal segments ; the sixth, ten and all the feet two- 

 jointed ; the seventh, eleven ; the eighth, seventeen. Elongation of 

 parts is due to intercalation of segments. The duration of the 

 metamorphosis varies considerably up to ten weeks. J. A. T. 



, Annulata. 



New Species of Rhynchelmis. — F. Smith and L. B. Dickey 

 {Trans. Amer. Micr. Soc, 1918, 37, 207-14, 1 pL). A description is 

 given of Rhynchelmis elrodi sp. n. from Western Montana. Some of 



