TRANSACTIONS OF WAGNER 

 1538 



TERTIARY FAUNA OF FLORIDA 



the "newer Tertiary" of Jamaica (letter in the Critic, Feb. i, 1863), but I 

 suspect that he referred to the Pleistocene reef limestones, which might well 

 contain Terebratula cubensis Pourtales, Terebratulina Cailleti Crosse, and 

 Argyrotheca lutea Dall, so abundant in similar situations in the recent fauna. 



Terebratula sp. indet. 



Miocene marl at Jackson's Bluff, Ocklockonnee River, Florida ; Vaughan. 



A single specimen, too young to determine the specific characters, was ob- 

 tained in the marl. It is mentioned here, as hitherto the Chesapeake Miocene 

 has afforded onh^ Discinisca among the brachiopods. 



Subgenus CHLIDONOPHORA Dall. 



Valves flattish, radially threaded, with a straight, wide hinge-line and corre- 

 sponding flat area on the ventral valve, the foramen triangular, open below 

 with very narrow or no apparent deltidial plates ; the cardinal process of the 

 haemal valve appearing externally like the auricles of a minute Pecten, the loop 

 broad, Terebratuloid ; the peduncle short with a rosette of long filaments sur- 

 rounding it where it emerges from the foramen ; the brachia with a wide 

 median lobe in the recent type. T3pe Terebratulinaf incerta Davidson, Men. 

 Rec. Brach., i., p. 38, pi. vi., figs. 23-25, 1886. Tropical Atlantic. 



This form has the sculpture of Terebratulina, the open loop of Terebratula, 

 and several features peculiar to itself, so that the late Mr. Davidson and myself 

 were puzzled to suggest its place in the system, he at first referring it to Miihl- 

 feldia. As the type appears as early as the upper Cretaceous, it is probably 

 worth segregating from the typical group or such forms as Liothyrina. 



Terebratula (ChUdonophora) filosa Conrad. 

 Terebratulina filosa Conrad, Am. Journ. Conch., ii., pp. 77, 105, pi. ix., figs. 4, 5, 1866. 

 fTerebratulina gracilis Conrad, Am. Journ. Conch., i., p. IS, 1865; not of Schlotheim, 



Petrefactenkunde, p. 270, 1820. 



Eocene of Alabama (Conrad, 1865) ; Cretaceous (rotten limestone) of 

 Alabama, at Uniontown, collected by Dr. Showalter, Conrad, 1866 ; Cretaceous 

 of Texas, Hayden. 



From the figures this seems hardly likely to be identical with Schlotheim's 

 species from the Chalk of Europe, yet they are apparently of the same group, 

 to which Bronn also refers ' T. rigida Sowerby and T. ornata Roemer. The 

 Texas specimens referred to are identical with those from Alabama. T. gnade- 

 loiip(B Roemer, from his figure, is nearly allied. The appearance of the type 



