VALLONUDAE. 175 



7 8 12 i« ir 



•r 



rig. 9. A, Zoogenetes harpa. B, C, Spelaeodiscus triarius. 



ZOOGENETES Morse. 



Vol. 27, p. 195. Steenberg (1925, pi. 29) has figured the 

 genitalia of an individual without male terminal organs. In 

 a specimen from High Pines, Duxbury, Massachusetts, taken 

 in September, 1911, I found the penis fully developed and the- 

 uterus containing embryos (fig. 9a.). 



The kidney has the pouch-like form usual in Pupillidae,. 

 the walls of its large cavity having about ten unequal longi- 

 tudinal ridges. Orthureter long, direct, opening in the lung 

 some distance from the collar. It is heavily pigmented to- 

 ward the anterior end, which appears externally as an oblong 

 black spot. 



The penis is rather thick and bears a long appendix en- 

 larged distally, narrowed in the middle. Epiphallus rather 

 thick, without a flagellum. The bifid retractor muscle is in- 



