REPORT ON THE SCAPHOPODA. 7 



The form Dentalium striolatum, as compared with DentaUum agile, is rather short, bent, and 

 striate ; compared with Dentalium orthrum, it is short, bent, and faintly striate. Dentalium agile, com- 

 pared with Dentalium orthrum (which it resembles in form), is smooth, the latter being sharply striate. 



In Dentalium agile the two lobes of the liver are equal, and the anal spatula is rather longer 

 than usual. 



7. Dentalium leptoskeles, 1 Watson (PI. I. fig. 6). 



Dentalium leptosceles, "Watson, Prelim. Report, pt. 2, Journ. Linn. Soc. Lond., vol. xiv. p. 513. 



Station 160. March 13, 1874. Lat. 42° 42' S., long. 134° 10' E. S. of Australia. 

 2600 fathoms. Red clay. Bottom temperature, 33° - 9. 



Animal. — Yellow, with a large dark patch in the region of the liver. A close little 

 bunch of captacula round the mantle-opening. 



Shell. — Very attenuated, thin, brilliant, porcellanous, with longitudinal flecks of 

 opaque white on the translucency of the shell, chiefly toward the apex, where the shell 

 thickens, very little bent, very slightly compressed between the convex and concave 

 curves. Sculpture : There is some kind of flexuous longitudinal texture in the structure 

 of the shell affecting the reflection from the brilliant surface, which is also closely and 

 regularly scratched transversely by very minute, sharp, but superficial lines, which run 

 round the shell a little elliptically. L. To in. B. - 12, at apex - 04. 



This species in form very much resembles Dentalium erectum, G. B. Sow., British Museum, " from 

 Sydney," for while some specimens of that species are more curved than this, others are even less so ; 

 but in this species the transverse stria? are very much more oblique ; and in the former there is no 

 trace of the irregular intratextural longitudinal strias which exist here. Than Dentalium agile, Sars, 

 this is a straighter and much more cylindrical, attenuated, brilliant, and delicate shell. 



8. Dentalium circumcinctum, Watson (PI. I. fig. 7). 



Dentalium circumcinctum, Watson, Prelim. Report, pt. 2, Journ. Linn. Soc. Lond., voL xiv. p. 513. 



Station II. January 13, 1873. Lat. 38° 10' N., long. 9° 14' W. Setubal. 470 

 fathoms. Green mud. 



Station 23. March 15, 1873. Lat. 18° 24' N., long. 63° 28' W. Sombrero Island, 

 West Indies. 450 fathoms. Pteropod ooze. 



Station 56. May 29, 1873. Lat. 32° 8' 45" N., long. 64° 59' 35" W. Off Bermuda. 

 1075 fathoms. Coral mud. Bottom temperature, 38° "2. 



Station 122. September 10, 1873. Lat. 9° 5' S., long. 34° 50' W. Pernambuco. 

 350 fathoms. Red mud. 



1 Xi-iTToaxiXri;, attenuated. 



