122 CHLORITIS. 



Ergebnisse eiuer Reise in Niederliindisch Ost- Indien, III, p. 171, 

 Part of his figures are reproduced on pi. 28, figs. 5-9. The epiphallus 

 bears a short accessory organ (shown below the penis retractor in 

 fig. 8, above it in fig. 9) of unknown homology and function. 

 Otherwise the jaw, teeth and genitalia agree with C. porteri. 



The section Plecteulota of v. Mollendorff, considered by him to 

 be a subordinate group of Eulota, probably belongs here. Its type 

 Plecteulota goniostoma Mlldff. is shown in pi. 29, figs. 6, 7. 



Small, thin-shelled forms, having much the aspect of Eulotella, 

 from which they differ in the sculptured apex and the lack of dart- 

 sack and the associated mucus gland or glands. It is in actual 

 practice, however, extremely difficult to tell what shells to refer ta 

 Eulotella, what to Chloritis ; and the most experienced conchologists 

 differ in their treatment of the forms. Most of the shells now 

 included in Austrochloritis were placed by Pfeiffer in Dorcasia and 

 Camcena ; and v. Mollendorff has expressed the opinion that part of 

 them are to be referred to Eulota (plus Plecteulota, Eulotella, etc.). 

 In regard to these conflicting opinions, the writer has only this to 

 say: the groups Eulota and Austrochloritis, notwithstanding their 

 superficial similarity, belong to widely different branches of the 

 Helix stock. Controversy respecting the generic position of certain 

 species known by the shells alone is idle ; for the anatomy only can 

 give a true answer to our questioning. 



(Australian species). 



C. spinei Cox, vi, 263. C. aridorum Cox, vi, 266. 



hysirix Cox, preoc. C. pseudoprunum Pils., viii, 271. 

 C. porteri Cox, vi, 263. prunum auct. not Fer. 



C. mansueta Cox, vi, 264. C. coxeni Cox, viii, 272. 



C. blackalli Braz., vi, 264. C. bennetti Braz., vi, 135. 



C. buxtoni Braz., vi, 265. C. blackmani Cox, vi, 137. 



C. brevipila Pfr., vi, 265. C. coxense Braz., vi, 1 38. 



C. mucida Pfr., vi, 148. 



(Species of New Guinea, etc.). 



C. occulta Pfr., vi, 266. C. telitecta Mlldff., viii, 222. 



C. chloritoides Pils., vi, 267. C. tenuitesta Mlldff., viii, 273. 



C. rhodochila Mlldff., viii, 273. C. argillacea Fer., iii, 210. 

 C. micholitzi Mlldff., viii, 272. cyclostomopsls Lea. 



C. goniostoma Mlldff., viii, 221. C. mendax Martens, iii, 212. 



