MOLLUSCA OS THE ' CHALLENttER ' EXPEDITION. 129 



This is a very aberrant form, with curious resemblances to 

 Bissoa epidaurica, Brusina*, and S,. striata, Adams, but is, I 

 think, a true Eulima, and is also probably mature. It is slightly 

 like IE. kampyla; but is smaller and straigbter, with a larger 

 blunter apex and small round mouth. 



23. Eulima euetchada, n. sp. 



St. 185 J. August 31, 1874. Lat. 11° 38' 15" S., long. 

 143° 59' 38" E. Eain Island, Cape York, North Australia. 

 155 fms. Sand, shells. 



Shell. — Small, strongish, porcellaneous, glossy white with a 

 smoky band, somewhat like a P^^pa-shell but more conical, 

 straight, with a blunt tip, flat-sided whorls, a strongly impressed 

 suture, and a small round mouth. Sculpture. There are obscure 

 microscopic crowded hair-like lines of growth and finer spiral 

 lines. Colour glossy porcellaneous white, banded in the middle 

 with smoky brown which deepens to the apex. Apex blunt and 

 rounded. Spire narrow and symmetrical, with conical profiles. 

 Whorls 5|, short, of slow increase, flat-sided ; but the last is 

 slightly rounded, contracting toward the base, its whole round 

 also diminishes in size toward the mouth. Suture linearly im- 

 pressed ; but toward the mouth the superior whorl slightly pro- 

 jects over it in consequence of the contraction of the shell. 

 Mouth small, contracted, almost tubular, and perfectly round. 

 Outer lip is very thin, and exceedingly patulous and prominent ; its 

 edge is very sinuous, retreating above and below, and advancing 

 in the middle. Inner lip thick on the body, where it is very patu- 

 lous, and has an advancing or slightly projecting edge, which is 

 continuous with that of the outer lip : a shallow but well-marked 

 furrow lies behind it, separating it from the body. H. 0"119. 

 B. 0-05. Penultimate whorl, height 0-03. Tip of apex 0-009. 

 Mouth, height 0-03, breadth 0029. 



This is certainly a very aberrant species of Eulima, and, but 

 for the foolishness of such subdivisions, might form the basis of 

 a new genus. The mouth is very unlike that of Euliraa, not being 

 at all pointed behind, and being quite round, contracted, and 

 subtubular ; but I think the species may find refuge in this genus. 

 There are some forty or fifty specimens, which indicates that the 

 species is abundant in the locality where it was found. 



* The identification of this species with B. glahrata, Miihl., seems to me 

 Tery doubtful. 



