142 THE NAUTILUS. 



Pupa servilis Gould. 



A West Indian species, wliicli hus been reported from Louisiana 

 and Texas ; whether it is really living on the continent I am unable 

 to decide. Among the many collections examined I never found it 

 from our country. 



I prefer the above name, since the description given with it corre- 

 sponds exactly with the form taken for it, while that of P. pellucida 

 Pfr. does not at all agree with the same, but quite well — as far as 

 it goes — with some other forms from the West Indies. 



Pupa . 



For completeness I wish to give short notice here of a very interest- 

 ing form, collected at our limits, at Hidalgo, Texas, by Mr. J. A 

 Singley. It resembles much the P. servilis of Gould, in size and 

 appearance. But by careful examination a few features are found 

 quite new and seen in none of the other continental forms of the 

 group, viz., the presence of an infra-apertural lamella, between the 

 " apertural " and the columella, and the inferior palatal lamella 

 being very long and of particular shape. Both these characters I 

 have seen also in some forms from Curacoa, in the collection of Mr. 

 W. G. Mazyck. Although this Pupa must be considered as specific- 

 ally distinct, I prefer not naming it. before, if possible, comparing 

 other, probably related ones, 'froni Central America and the West 

 Indies. 



A few words must be added concerning the geographical distribu- 

 tion of the species in question. 



P. rupicola and procera I have seen together only in one instance, 

 in a lot from "South Carolina," where there was one example of the 

 former among a number of the latter. But it was much to my satis- 

 faction, a thing I had long looked for. It is evident that reports of 

 P. rupicola Say, having been collected in the interior of the continent, 

 say North and West of a line drawn from South Carolina to Louis- 

 iana, possibly also a part of southern Texas, are with all probability 

 to be referred to P. procera Gould. 



P. rupicola and Iwrdeacella have been collected together in many 

 places of Florida (by Messrs. Dall, Stearns, Plemphill, Webster, A. 

 G. Hinkley, et. at.), and in Mississippi (Pass Christian, by Mr. Bryant 

 AValker), while at and near Charleston, South Carolina, the former 

 seems to be alone (Mr. W. G. Mazyck.) 



In middle Texas (Lee Co., iNIr. Singley) P. hordeacella, hordeacea 

 and procera are found together ; in lots from Comal County, (drift, 



