330 W. WESCHE ON MALE ROTIFERS. 



It has been pointed oufc to me that the nomenclature of this 

 Rotifer is impossible till the female has been found, and con- 

 sequently the publication of its observation is premature. 

 To this T demur on several grounds. 1. The animal has a 

 mastax and stomach, and this is so rare as to be lemarkable. 

 2. The size is so large that an inexperienced observer might 

 easily mistake it for a female, and the record would be of use 

 in putting him right. 3. The habits are very peculiar, similar 

 actions never having been hitherto recorded in the male. 



Explanation of Plates. 



Plate 17. 



Fig. 1 a. Triarthra longiseta (^, lateral view x 600. 

 lb. „ „ cT, dorsal view x 600. 



2 a. Notommata naias ^, dorsal view x 420. 

 2 b. „ „ c?, lateral view x 420. 



Plate 18. 



jj 



?j 



3. J^^otops (Ehr.) 



Gastropus (Weber) 

 4 a. New male, dorsal view X 600. 

 „ 4 b. ,, ,, lateral view X 600. 



5) 



JJ 



\h7/ptopus c^, lateral view x 350. 



J) 



5. Resting eggs of various species. 



a. Hydatina senta. b. Rhinops vitraea. 

 c. Triarthra brevispina. d. Meiopidia solidus. 

 e. Callidina plena ? 



Journ. Qicekett Microscopical Club, Ser. -, Vol. VIII., No. 51, November lt»02. 



