783 



Fig. 332, a, Hypocomides mediolariae, X1000; b, left side view of 

 Anisocomides zyrpheae in life, X1065; c, Isocomides mytili in life, X1000 

 (Chatton and Lwoff); d, Hypocomina tegularum, X1245; e, Heterocinetop- 

 sis goniobasidis, XI 145; f-h, Hypocomella phoronopsidis, X1300 (f, ven- 

 tral view of a stained specimen; g, h, dorsal and right side views in life) ; i, 

 Enerthecoma kozloffi,, X1145 (Kozloff). 



H. stphaerii J. and R. Ovoid; 30-45/x by 14-18/u by 9-12^; nine 

 ciliary rows; five rows on left- ventral and four on right; on the gills 

 of Sphaerium corneum and S. rivicola (Jarocki and Raabe, 1932). 



Genus Isocomides Chatton and Lwoff. Elongated; 14-18 ciliary 

 rows on anterior 2/3 of the ventral surface ; six to seven on right and 

 eight to 11 on left; in addition, there is a short transverse row with a 

 dozen long cilia, posterior to other rows; on mussels. 



/. mytili (C. and L.) (Fig. 332, c). 57-64 M by 20-22 M ; on the gills of 

 Mytilus edulis (Chatton and Lwoff, 1922). 



Genus Hypocomina Chatton and Lwoff. Ovoid to pyriform; an 



