58 



Where these species have been placed in a subgenus at all, 

 the name Nenia has been used. This was first published by 

 H. & A. Adams (1855) who adopted the section from Charpentier 

 (1852), he having only designated it by a number. The species 

 so placed were in each case C epistomhun and C. tridcns. Some 

 authors have located C. dohrni in Baica, but since the type of this 

 genus is B. perversa, L., such reference seems erroneous. 



While certain of the species fall easily into groups, the 

 others still appear to be isolated forms, and our present knowledge 

 of the South American Clansiliac is insufficient to enable us to 

 properly separate them, any endeavour to do so being premature. 



The species I described as C. perplexa appears to me now to 

 be only a form of C. dohrni, and it has therefore been placed in 

 the synonymy of that species. I think it is rJso ver\' probable 

 that C. meigistra is a variety of C. harsteniaiia and that C.jolyi is 

 a form of C. filocostnlata : since, however, I have not seen 

 authentic specimens of some of these, I hesitate to definitely 

 imite them. 



C. fiiiicki, I'fr., is a difficult species to classif}' ; still it 

 appears to belong to the Clausilia group, tliough of a somewhat 

 aberrant form. 



C. cyclostovia was described by Pfeiffer as from the Corean 

 Archipelago; subsequently he stated that it was probably South 

 American, while in the ' Nomenclator Heliceorum Viventium' it 

 appears as from Venezuela, and a specimen in my collection is 

 said to have come from "Quito, Peru," which I assume refers 

 really to the Quito in Ecuador. The real habitat therefore 

 remains uncertain. 



Bourguignat varied the spelling of audccola to andicola, that 

 of dohrni to dorhni (err. typ. ?), and changed inaranhonensis to 

 maranhonica : these alterations appear to me to be unnecessary. 



Clausilia evae, n. sp. (Plate IV., Figures i, 2, 3.) 



Testa fusiformis, tenuiuscula, corneo-fuscula, parum nitens ; 

 apex obtusus, non decollatus ; anfr. 8^ plano-convexi, lente 

 accrescentes, primi laeves, reliqui sat distanter costulato-striati, 

 costulis undulatis, interstitiae laeves, anfr. ultimus ante aper- 

 turam multius costulato-striatus quam anfr. penultimus, subtus 

 modice angustatus, basi rotundatus, applanatus ; sutura impressa ; 

 apertura magna, fere circularis, basi recedens, peristomate con- 



