22 Proceedings of the Royal Irish Academy. 



indistinda, the spiral striae are three only in number on the 

 body whorl, two on each of the upper whorls. The whorls 

 are flattened. There is no trace of a columellar fold. Its apex 

 is bluntly truncated like that of indistincta and not small and 

 oblique like that of clathrata which latter species it closely 

 resembles in sculpture. None of the numerous specimens of 

 indistincta approach it. The two forms appear quite distinct. 

 I have specimens of this puzzling form from the Mediterranean, 

 It appears to be distinct from both indistincta and clathrata, 

 but until a good series can be obtained, it may be considered a 

 variety of the former and designated var. simulans. 



LiosTOMiA CLAVULA, Loven, sp. (^Turlonilld). 



Logs 9, 11, 12, 18, 21, 22, 28, 34, 42, 55, 63, 64, depth 5 

 or 6 to 79 fathoms. This species, usually accounted a rarity, 

 occurred in surprising abundance, especially in the dredgings- 

 from the mouth of Kenmare Eiver. The great majority of the 

 specimens are of the form of Loven's type which has not been 

 recorded, so far as I am aware, from British waters. His 

 description and the dimensions fg-^T mm.) agree entirely with 

 my observations of these shells. There are, however, a few 

 examples of a form so unlike the type that they would assui'edly 

 be considered specifically distinct did not intermediate grada- 

 tions occur. This varietal form, which has the peculiarities of 

 ordinary British specimens markedly exaggerated, deserve a 

 special name, and I would suggest as a suitable appellation — 

 Var. iioBTTsTA, var. nov. Shell having the form of a truncated 

 cone, instead of being almost cylindrical, of thicker texture 

 than the type, with a larger umbilicus, and a sub-angulated 

 periphery. Height 1'5 mm. Breadth '75 mm. 



NcEMiA DOLioLiFOEMis, Je&cys, sp. {Odostotnia). 



Log 28. Two or three broken specimens. 



TiJEBONiLLA LACTEA, Liuue, sp. {Turho). 



Logs [33], 50, E, Remarkably rare. Linne's name may 

 j)erhaps stand, although it is noteworthy that the Marquis of 

 Monterosato rejects it. 



T. pusiLLA, Phillippi, s^. {Chemnitzia), non Odostomia2nmlla,Je&ejs. 



Station VIII. Log 42. This, like the former species, is 

 only represented by a fragmentary specimen or two. 



