162 PROCEEDINGS OF THE ACADEMY OF [April, 



being contained in No. 2556, A. N. S. P. We are utterly at a loss 

 to account for Gabb's reference of the shell to C. cedo-nulli, which is 

 entirely different. 



The sculpture is rather variable, as usual in Conus some individuals 

 showing raised spirals nearly up to the shoulder, while in other the 

 upper half may be smooth. 



Conus pernodosus n. sp. 



The shell is rather slender, the diameter not quite half the length ; 

 spire produced, slightly concave in the upper part, of about 9 whorls, 

 which are slightly concave and spirally striated above, with a pro- 

 jecting periphery which is set with somewhat pointed tubercles on 

 the last 3| whorls. On the angle of the last whorl there are 11 

 tubercles. Below the angle the outline is very slightly convex. 

 Surface closely sculptured with flat-topped spiral cords about twice 

 as wide as the intervals (37 below the angle of last whorl) ; intervals 

 are sharply sculptured with axial threads. 



Length 23.3 (imperfect at base); diam. 12.3 mm. 



With the type, No. 2552, A. N. S. P., there are two young shells 

 about 15 mm. long, which show tubercles on the last whorl only. 

 The upper whorls, in this species, have a smooth, projecting periphery. 



Conus gabbi n. sp. 



The shell is rather slender, stoutly fusiform, with a concavely 

 conic spire of about 11 whorls; all post-embryonic whorls have a 

 tubercular keel projecting above the suture. Upper surface of each 

 whorl is slightly concave, with about 5 unequal spiral threads crossed 

 by prominent, arched, unequal striae. Below the shoulder of the last 

 whorl the slope is at first convex, becoming slightly concave in the 

 lower part. It is sculptured with about 37 smooth, rounded spiral 

 ribs narrower than their intervals, which are elegantly cancellated 

 by close raised axial threads. The aperture is rather narroAv 

 throughout. 



Length 43, diam. 17.5 mm.; length of aperture 35 mm. 



The number and spacing of the spiral ribs is somewhat variable. 

 In one specimen 35 mm. long there are only 24 spiral ribs. Conus 

 tortuosostriatus Toula (1911), from the Panama Canal, resembles 

 this species somewhat, but it has fewer and flattened spirals, and 

 there are some fine spiral threads in the furrows. It seems also to 

 be more contracted in the lower part. 



The type and four other specimens are No. 2553, A. N. S. P. 



