FAUNA OF ORTHAULAX PUGNAX ZONE. 69 



Family COLUBRARIIDAE. 

 Genus CANTHARUS Bolten. 



Cantharus Bolten, Mus. Boltenianum, p. 132, 1798, First species, Buccinum 



tranqueharicum Giuelin. 

 Tntonidea Svvainson, 1840. 



CANTHARUS PAUPER Ball. 



Plate 7, fig. 5 ; plate 10, fig. 12. 



Tritonidea jyavper Dall, Trans, Wagner Inst., vol, 3, pt. 1, p. 129, pi. 4, 

 fig. 8c, 1890. 



Tampa silex beds, Dall and Post. U. S. Nat. Mus. No. 165079. 



This pretty little species belongs to the group of C. orbignyi Pay- 

 raudeau which occurs both in the Mediterranean and Floridian recent 

 fauna, indicating a considerable antiquity for the race. 



Genus PHOS Montfort. 



PJios Montfort. Couchyl, Syst., vol. 2, p. 494, 1819. Sole example, Murex 



senUcosiis (Linnaeus) Gmelin. 

 Muricidea Swainson (sp.) Mai., p. 294, 1840. 



PHOS, sp. indet. 



An indeterminable species of Phos was collected from the Tampa 

 silex beds at Ballast Point by the late Frank Burns. Since then, 

 Mr. E. J. Post, of Tampa, has obtained imperfect specimens of a 

 different species. Unfortunately neither of them is in a sufficiently 

 perfect state to make it advisable to describe it. 



Family ALECTRIONIDAE. 

 Genus ALECTRION Montfort. 



Alectrion Montfort, Conch. Syst., vol. 2, 1810, p. 565. Monotype, Buccinum 



papillosum Linnaeus. 

 Ifasm Lamarck, Prodrome, 1799, p. 71. Monotype, Buccinum mutabile 



Linnaeus. Not Nassa Bolten, 1798. 

 Tritonella A. Adams, 1853; not of Swainson, 1840. 

 Alectrion Dall, Bull. Mus. Comp. Zool., vol. 43, No. 6, 1908, p. 306. 



ALECTRION URSULA, new species. 



Plate 12, fig. 13. 



Shell small, fusiform, strongly sculptured, with about" 5 whorls, 

 the apex of the spire defectiA^e in the specimen; suture appressed. 

 distinct; nucleus lost; subsequent whorls axially sculptured with 

 (on the last whorl 10) rounded ribs, with wider interspaces, extend- 

 ing from suture to suture and, on the last whorl to the canal, 



