04 Bulletin i i 64 



I, 1835. 



Cormdina arviigera Con., Proc. Ac, e!:c., 1853. p. 321. 

 Coi'Hulina armigera Con., Amer. Jr. Conch., vol. i, p. 21, 1S65. 

 Corniilina armigera Aid., Geol. Surv. Ala., Bull, i, pi. 50, 53, 1886. 

 Cormdina armigera Dall, Trans. Wag., etc., vol. 3, p. 118. 



Conrad's original description. — "Shell subglobose, ponderous; 

 body whorl with a double row of short, thick spines, one on the 

 shoulder, the other near the middle: three or four strongly im- 

 pressed lines towards the base: columella and lip callous; basal 

 emargination profound, spire subconical, convex, constituting 

 nearly half of the shell, the humeral spires revolving upon it. 

 Length 2)^ inches; breadth 2 inches. 



''Locality. — Claiborne, Ala. 



"Cab. Acad. N. S." 



This .species shows a considerable variation as to ornamentation. 

 The Gregg's landing specimen herewith figured shows but one 

 row of spines; that at Nanafalia shows a rudimentary series be- 

 low; while the Hatchetigbee specimen has three rows. 



Lignitic localities. — Ala.: Yellow bluff; Nanafalia; mouth of 

 Bashi creek; Gregg's; Nanafalia; Woods bluff; Hatchetigbee. 



Texas: Sabinetown. 



Triton tuomeyi, PI. 8, fig. 12. 



Syn. Ranella [Argobticcinimi) tuomeyi Aid., Bull. i. Geol. Surv. Ala., 

 p. 20, pi. 3, fig. 3, 1886. 



Aldricli' s original description. — "Shell oblong-ovate, canal 

 strongly recurved, bent upwards; whorls seven; spire elevated, 

 pointed, the first two whorls smooth, the others cancellated, the 

 longitudinal lines forming tubercles at intersedlions; tubercles 

 sharp, transverse, strongly developed on the periphery of the 

 body whorl and next one above, generally three large ones on the 

 body whorl between the varices; transverse striae numerous, com- 

 posed of coarse lines, having three finer ones between, and others 

 between these; line of growth fine; varices strong, pitted on the 

 back side; suture impressed, slightly shouldered; aperture ovate; 

 outer lip with a strong varix, nine tubercles within, canal nearly 

 as long as the aperture. 



''Locality. — Lower bed. Woods bluff, Ala. 

 ' "Young shells show more tubercles between the varices than 

 the type. Named in honor of the late Prof. Michael Toumey." 



