1917.] NATURAL SCIENCES OF PHILADELPHIA. 159 



spiral strise in the lower half, and the spiral striation of the spire is 

 distinct. 



Length 33.5, diam. 17.3 mm. (type). 

 " 38, " 20.5 '' 



Conus xenious n. sp. 



The shell is broad above, the diameter about two-thirds of the 

 length; spire low, its outline strongly concave, rising to an acute 

 apex; periphery carinate, the slopes below it nearly straight. The 

 early whorls have a smooth keel, projecting above the suture, but 

 the last five are flat, with very weak traces of spiral striae, and sepa- 

 rated by a plain, narrowly impressed suture. The last whorl has 

 coarse, well separated spiral cords on the anterior end, but under 

 suitabty oblique light very faint spirals may be seen throughout. 

 The faint growth-strise retract rather strongly near the shoulder. 

 The aperture is very narrow. 



Leng-th 29, diam. 19 mm. (type). 

 27, " 17 '' 



Besides the type, No. 2575, A. N. S. P., there are three other 

 specimens in the lot. It was labeled "Conus sp. ?, monstrosity" 

 by Gabb, but none of the specimens shows any trace of injury, and 

 we have every reason to believe that they are entirely normal. 



Conus perlepidus n. sp. 



Conus planiliratus Sby., Gabb. Trans. Amer. Philos. Soc, XV, 1873, p. 230. 

 Not of Sowerby. 



The shell is rather slender, with somewhat concavely conic spire 

 of about 12 whorls, which are fiat, marked with raised, arcuate 

 strise, and have an angle projecting very little above the suture. 

 Last whorl is rather actuely angular, the sides nearly straight below 

 the angle, with sculpture of about 22 spiral furrows half as wide as 

 the flat intervals; the furrows being cancellated by raised axial threads. 

 The posterior sinus of the aperture is deep. Aperture of about equal 

 width throughout. 



Length 44, diam. 18, length of aperture 38 mm. 



Gabb referred the specimens of this species to C. planiliratus, but 

 Sowerby's phrase "Testa turbinata, crassa" could hardly have been 

 applied to such "a long, narrow species" as this. Gabb refers, 

 also, to Guppy's figure in Quarterly Journal of the Geological Society, 

 XXII, PI. 16, fig. 7, which agrees well with Sowerby's brief diagnosis 

 of C. planiliratus, but not with the present species. 



The type and five other specimens are No. 2569, A. N. S. P. In 



