REPORT ON THE GASTEROPODA. 45 



7. Puncturella sport ella, Watson (PL IV. fig. 9). 



Puncturella sportella, Watson, Prelim. Report, pt. 1 6, Journ. Linn. Soc. Lond., vol. xvii. p. 37, sp. 9. 



Station 24. March 25, 1873. Lat. 18° 38' 30" N., long. 65° 5' 30" W. Off Culebra 

 Island, West Indies. 390 fathoms. Pteropod ooze. 



Shell.- — Very small, strongish, oblong, with straigbt slopes before and at the sides, and 

 markedly concave behind ; the apex is very small, and it alone projects backwards ; the 

 surface is finely cancellated ; the slit is lozenge-shaped. Sculpture : There are very many 

 slightly irregular, coarsish, radiating riblets crossed by concentric threadlets, which are 

 rather finer and closer but somewhat more irregular, and which form minute knots in 

 crossing the riblets ; from this sculpture results the basket-work appearance from which 

 the name of the species has been adopted. Colour white, with a faint tinge of ruddiness. 

 Apex is exceedingly minute ; and it is the little embryonic spiral alone which projects ; 

 the entire number of whorls is only If. Slit roundish, but acute in front, and drawn 

 out behind (where it is closed by the septum) into a sharp point so as to be lozenge-shaped 

 when viewed in its entire length. Margin straight on the sides, scarce appreciably 

 broader behind than before ; the edge is bevelled off so as to be quite sharp. Inside 

 glassy; feebly marked with the ribs, which, as well as the concentric threads, shine 

 through as transparent ; the opening up into the apex is narrow and deep, but not 

 pointed ; there is no anterior furrow ; the slit, as seen from within, is roundish, pointed 

 in front, and truncated behind by the short, thin, triangular, straight-edged, little- oblique 

 septum. L. 0"12 in. B. 0-08. H. 06. 



This beautiful species is not improbably full grown, the very small apex seeming to indicate that 

 the species is in its own nature minute. In outline it somewhat resembles Puncturella granulata, Seg. ; 

 in sculpture it has relations with Puncturella asturiana, Fisch., and Puncturella profundi, Jeffr. ; in 

 both respects it may be compared with Puncturella clathrata, Jeffr., but is unlike them all, and may 

 be readily recognised by its minute apex. 



8. Puncturella (Cranopsis) asturiana (Fischer) (PL IV. fig. 4). 



Rimula asturiana, Fischer, Jour, de Conch., 1882, p. 51. 



Puncturella (Cranopsis) asturiana, Watson, Journ. Linn. Soc. Zool., vol. xvii. p. 29, sp. 1. 



Station 24. March 25, 1873. Lat. 18" 38' 30" N., long. 65° 5' 30" W. Off Culebra 

 Island, West Indies. 390 fathoms. Pteropod ooze. 



Habitat. — Bay of Biscay. 600 to 1100 fathoms. 



Shell. — Grey, thin, depressed, oval, considerably broader in front than behind ; 

 with straight conical sides, convex in front and concave behind, where in particular 

 the margin is a little patulous : it is scored with sharpish ribs and concentric 



