MUSEUM OF COMPAKATIVE ZOOLOGY. 431 



Cadulus lunula Dall. 



Plate XXVII. Fie. 8- 



Cadulus lunula Dall, Bull. M. C. Z., IX. p. 85, 1881. 



Habitat. Station 2, in 805 i'nis. ; Barbados, in 100 fins. 



By a typographical error the specific name ajipeared in the Preliminary 

 Report with a masculine termination. A fragment, apparently of this species, 

 was dredged by the Fish Commission, off Cape Lookout, N. C, in 18 fms. 



Cadulus obesus Watson. 



Cadulus obesus Watson, Lin. Soc. Journ., XIV. p. 627, April, 1879; Cliall. Rep. 

 Gastrop., p. 22, pi. ill. fig. 8, 1885. Dall, Bull. M. C. Z., IX. p. 30, 1881. 



Habitat. St. Thomas, Challenger Expedition, 390 fms. Blake Expedition, 

 Station 20, in 220 fms. Only one specimen was obtained. 



Cadulus amiantus Dall. 



Plate XXVII. Fig. 7. 



Cadulus sauridens Dall, Bull. M. C. Z., IX. p. 30, 1881, not of Watson, Lin. Soc. 

 Journ., XIV. p. 525, April, 1879. 



Habitat. Station 19, in 310 fms. Off Cape San Antonio, in 1002 fms. Off 

 Cape Florida, in 8 fms.. Dr. W. H. Rush, U. S. N. 



This species, first identified by me with C. sauridens Watson, was submitted 

 to Mr. Watson for examination. He writes : *' Compared with C. sauridens 

 it is three times as long, mouth not oblique nor regular ; form much more bent, 

 swelling much more pronounced and nearer the anterior end. The transverse 

 contour line is more circular, there being little if any flattening between the 

 convex and concave slopes. It is more like C. vulpidens Watson, but is only 

 half the length of that species, and less conical behind the ' equator,' and more 

 conical in front of it. The equator is less angulated than in C vulpidens, and 

 not so near the mouth." The length of C. amiantus is 5.75 ; its max. diameter, 

 1.4 mm. Both orifices are circular and not notched, and the swelling evenly 

 shades off toward the extremities. The specimens obtained off Cape Florida 

 are more slender than the typical form. 



Cadulus cucurbita Dall. 



Plate XXVII. Fig. 13 d. 



Cadulus cucurbita Dall, Bull. M. C. Z., IX. p. 35, 1881. 



Habitat. Station 19, in 310 fms. 



The single specimen obtained recalls C. gihhus Jeffreys, but is very much 

 larger, and differently proportioned. 



