1889.] NATURAL SCIENCES OF PHILADELPHIA. 85 



as far as I am aware. The shell exhibits a type of aperture com- 

 plications different from any other species of Polygyra. 



Poecilozonites reinianus Pfr. Far. goodei Pilsbry. PI. Ill, figs. 12 and 13. 



This form is similar in coloration and texture to P. reinianus. 

 It is more broadly umbilicated, planorboid, the spire flat, or even 

 sub-immersed ; whorls six. 



Alt. 3, diam, 10 mill. 



Among the Bermudan shells sent to Prof. Heilprin from the U.S. 

 Nat. Mus., were a number of this variety, which seems to me dis- 

 tinct enough for a name. The types of the variety are No. 94,424 

 of the National Museum register. Collected by G. Browne Goode. 



Poecilozonites bermudensis Pfr. 



The result of my dissection of this species was a surprise to me, 

 for I had expected the same form of genitalia found in Zonites. The 

 genitalia are figured on plate xvii of the Proceedings of this 

 Academy for 1888, figs. N, o. The penis (p.) is rather short, con- 

 voluted, thick, the vas deferens inserted at its termination, is rather 

 short. The cloaca is large, wide ; below the penis there is a long 

 club-shaped sac (d.), its base dilated where it enters the cloaca. 

 This is probably a dart-sack, although the specimens examined by 

 me contained no dart. On the penis near its base arises a duct (d.), 

 which uniting with another (d.) arising opposite the penis, is con- 

 tinued into a long duct coiled around the vagina, and ends in a 

 small oval bulb, the receptaculum seminis or spermatheca (sp.). 

 The way it is coiled around the vagina is shown also in fig. o, which 

 represents another specimen. The albumen gland, etc. offer no un- 

 usual characters. I did not dissect out the ovo-testis. My speci- 

 mens were quite hard, having been in strong spirit. 



The connection of the duct of the spermatheca with the penis is 

 unique as far as I know, in the Pulmonata, and suggests the proba- 

 bility of self-impregnation. 



Mr. W. G. Binney has kindly called my attention to his note upon 

 the dentition and jaw of H. bermudensis and the dentition of H. 

 circumfirmata in the Ann. N. Y. Acad. Sci., iii, p. 86, 105. The 

 first species is placed by hini with doubt in Zonites with the remark 

 that " it seems to belong to no described genus." H. circumfirmata 

 is left in Microphysa, for want of a better place, but Mr. Binney 

 points out the fact that the species belongs to the Vitrinea rather 

 than to the Helicea. 



