85 LiGNiTic Stage 85 



Calyptnra truchiformis Desh., Coq. Foss. Env. Par., vol. 2, p. 30, 



pi. 4, fig's. I, 2, 3, 1824. 

 lufundibuluin trochiformis Lea, Coiit. to Geol., 1833, p. 96, pi. 3, 



fig. 76. 

 /. urticosum Con., Foss. Sh., etc., 1833, p. 32. 

 /. ir-odiiformis'Con., Foss. Sh., etc., 1835, p. 46, pi. 16, fig. 18. 

 Trochita trochiformis Con., Am. Jr. Conch., vol. i, p. 33, 1865. 

 T. troc/iiforvtis Aid., Geol. Surv. Ala., Bull, i, 1886, pp. 52, 56. 

 Calyptrcra trochiformis de Greg.. Faun. Eoc. Ala., p. 145, pi. 13, 



40-47. 

 C. trochiformis Dall (partim), Tr. Wag., etc., vol. 3, p. 352, 1893. 

 C. aperta Cossm., Ann. Geol. et Pal., 1893, p. 26. 



Solandef s original dcsc?dption. —''Trochns {apertus) testa 

 gibboso-conica exasperata obliquata subtus concava, aperttira 

 angustata. 



"Primo intuitu Patellis assimilatur \\\\^o;^Q: onyx's. Labio interna 

 instru(5tae sunt, cfr. Linn. Syst. nat. n. 654-658. Specimina 

 autem perfe(5ta spiram ostendunt completam, anfraH-ns licet pau- 

 ciores quam in congeneribus; Apertura etjam magis contra(5la est. 



"Testa magnitudine Juglandis sed depressior, ssepeque minor; 

 tabulae imposita conum formans gibbosiusculum, quo etjam a 

 congeneribus differt; externe scabra, subtus Isevis, concava. 



"Apertura angustata, lateribus magis roduntatis quam iii 

 reliquis hujus generis." From the Barton beds of Southern 

 England. 



American Lignitic localities. — Ala.: Woods bluff; Yellow bluff; 

 Gregg's landing; Bell's landing; Ozark; 3 mi. s. w. of Thomas- 

 ville. 



Type. — British Museum. 



Specimens figured. — Larger specimen from Gregg's; smaller 

 from Woods bluff; Paleontological Museum, Cornell University. 



Xenophora conchyliophora, I'l- Ji. ^g- ^7- 



Syn. Trochus conchyliophorus Born, Mus. Caes. Ind., 1778, p. 333. 

 Phorus recLusus? Aid., Geol. Surv. Ala., 1886, Bull, i, p. 52. 

 -V. conchyliophora Dall, Trans. Wag., etc., vol. 3, p. 360, 1893. 



I have little doubt but what Dall is right in referring the 

 specimens from Woods bluff to this living species. Whether or 

 not the Cretaceous specimens from Prairie bluff should be re- 



