EULOTA. 213 



Jaw wide, arched, with 8 td 14 wide, contiguous ribs, (pi. 65, fig. 

 12, E. qucesita var. perryi}. 



Radula having mesocones only on middle and inner lateral teeth; 

 outer laterals with ectocone. Inner marginals with bifid oblique 

 inner and simple outer cusp, the outer teeth with bifid ectocone (pi. 

 65, fig. 11, E. qucesita var. perryi). 



Genital system (pi. 66, figs. 27, 28, 29, E. qucesita var. perryi) 

 having the penis long ; epiphallus long, bearing the retractor, 

 flagellum rather short ; dart sack enormous, containing a flattened, 

 longitudinally costate dart, (figs. 27, 28) ; adnate on d. s. is an ac- 

 cessory sack, upon which a cluster of sacculated mucus glands is 

 inserted, these glands being closely bound together and to the dart 

 sack, as in other forms of Eulota, and with fibres connecting with 

 uterus. Duct of the globose spermatheca long. (In fig. 29 the 

 mucus glands are shown torn free from each other and from the 

 dart sack by the removal of their investing membrane, as has been 

 done with the other figures on plate 66). 



Euhadra was instituted to include a group of rather large species 

 of Japan and China, which had been placed in Hadra and Camcena 

 by authors. It contains the largest and most conspicuously colored 

 belogonous Helices of East Asia, excepting, of course, the Philip- 

 pine Island Helicostylas. The bands of these forms are not homol- 

 ogous with those of European Helices, excepting possibly the 

 supraperipheral one, which was probably present in very ancient 

 Helices, and is retained in many and diverse groups. 



The Japanese forms of Euhadra are so variable that after exam- 

 ining about a thousand specimens from many localities, I am dis- 

 posed to consider some forms described by Kobelt and others 

 merely varieties. The genitalia of qucesita, peliomphala and brand- 

 tii are very similar, but the first of these has more ribs on the 

 jaw. 



(Group of Simodtf). 



E. simoda? Jay, vi, 95. E. herrmannseni Pfr., vi, 98. 



E. connivens Pfr., vi, 96. koreana Pfr. 



v. ph?eogramma Anc. 



(Group of Luhuana). 



E. luhuana Sowb., vi, 305. v. callizona Cr., vi, 105. 



luchuana Auct. v. amalise Kob., vi, 105. 

 v. peliomphala Pfr.,vi, 99. congener Sm. 



japonica Dh., not Fer. v. congenita Sm., vi, 103. 



