FAUNA OF OETHAULAX PUGNAX ZONE. 77 



Genus TRITONALIA Fleming. 



Tritonalia Fleming, Hist. Brit. Anim., p. 167, 1828, in corrigenda. Type, 



Murex erinaceus Linnaeus. 

 Ocenebra (Leacli Ms.) Gray, Ann. Mag. Nat. Hist., vol. 20, 1847, p. 269; 



Proc. Zool. See. Loudon, 1847, p. 133, No. 10. 

 Ocinehra H. and A. Adams, Gen. Rec. Moll., vol. 1, 1853, p. 74. — Fischer, 



Man. de Conctiyl., 1883, p. 642. Same type. 



TRITONALIA SCABROSA, new species. 

 Plate 5, fig. 15. 



Shell small, elevated, scabrous, of about 5 whorls beside the 

 (decollate) nucleus; suture appressecl, indistinct, flexuous; spire 

 rather acute; axial sculpture of 7 rather stout rounded ribs ex- 

 tending from suture to canal, and of numerous more or less minutely 

 scaly incremental lines covering the surface; spiral sculpture on 

 the spire of 2 prominent duplex threads, slightly swollen where 

 they cross the ribs and more or less minutely imbricate; on the 

 body of the last whorl 5, and on the canal 3 similar spirals tending 

 to become more or less spinose or bluntly pointed on the ribs at the 

 shoulder; between these are numerous finer imbricate threads with 

 wider interspaces ; the whorl slopes to the shoulder from the suture ; 

 aperture with the outer lip thickened and crenulated by the spiral 

 sculpture, internally with 5 short rather distant denticles; body and 

 pillar with a thin wash of callus, the spiral sculpture on the canal 

 under the enamel is perceptible ; canal open, short, recurved. Height 

 22, height of aperture and canal 12.5, maximum diameter 12 mm. 



Tampa silex beds at Ballast Point, Tampa Bay, Florida. U. S. 

 Nat. Mus., No. 166101. 



This might almost equally well be referred to Muricidea, but it 

 has the surface of Tritonalia. 



Genus TYPHIS Montfort. 



Typhis Montfort, Conch. Syst., vol. 1, p. 615, 1810. Type, Murex tubifer 

 Roissy.— Dall, Bull. Mus. Comp. Zool., vol. 18, 1889, p. 214. 



TYPHIS SIPHONIFERA, new species. 



Plate 13, fig. 9. 



Shell small, short, stout-conic, of four whorls, of which the first 

 is smooth and rounded, the others, rapidly enlarging, smooth, an- 

 gulated by four varices, about midway between which, on a suban- 

 gular shoulder of the whorl, intervene stout tubes slightly back- 

 wardly and apically directed, entire and with subcircular orifices, 

 one tube being situated in each interspace; suture distinct, deep, the 

 whorl in front of it to the shoulder subtabulate, the shoulder rounded 



