1917.] NATURAL SCIENCES OF PHILADELPHIA. 161 



Conus simplioissimus n. sp. 



Conns berghausii Mich., Gabb, Trans. Amer. Philos. Soc, XV, 1872, p. 232. 

 Not of Michelotti. 



The shell is thick, stout, the diameter more than half the length, 

 smooth except for delicate growth-lines. Spire conic with concave 

 outlines, the whorls nearly flat, the upper ones angular above the 

 suture. Shoulder rounded, the lateral slope below it somewhat 

 convex, showing very faint traces of five spiral series of rather large 

 reddish spots. Above the shoulder there are some oblique reddish 

 flames. No spirals near the base or elsewhere. Aperture is some- 

 what widened in the lower third. 



Length 68, diam. 42 mm. 



63, " 33.5 " ; whorls 11 (type). 

 41, " 25.5 " . 



A cone of very simple form, differing from others of somewhat 

 similar contour by the absence of spiral sculpture. C. recogonitus 

 is much more contracted anteriorly, and has weak spiral striae. 



The smallest specimen of the three is that which Gabb referred to 

 C. berghausii Mich., an Italian Tertiary species. Dr. Dall has 

 included C. berghausii Gabb in t(he synonymy of C. proteus, but it 

 differs from that by the swollen shape, and is certainly distinct. 



Type No. 2549. 

 Conus porcellus n. sp. 



Conus cedo-nulli Brug., Gabb, Trans. Amer. Philos. Soc, XV, 1872, p. 232. 



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

 The spire is low-conic with slightly concave outlines, composed of 

 about 10 whorls, the later two or three concave above, earlier ones 

 flat, a few showing a slightly projecting angle above the suture; 

 lightly sculptured with arcuate growth-lines. The shoulder of the 

 last whorl is well rounded; lateral slope convex in the upper part, 

 then straight. A siphonal fasciole is defined by an oblique, spiral 

 ridge, below which there are four spiral cords. Above the ridge 

 there are about 10 narrow, widely spaced spiral cords, each bordered 

 above by a slight gutter which is striated vertically. The upper 

 third of the last whorl is nearly smooth, but ujider a lens it shows 

 faint, widely spaced spirals, either slightly raised or indicated by 

 gray lines. 



Length 29.3, diam. 19 mm.;lengthof aperture 25 mm. (type). 

 38, " 24 " (largest specimen). 



Type No. 2546. 



A series of several hundred specimens is in the collection, the type 



