SIMPSON — CONTRIBUTIONS TO THE MOLLUSCA OF FLORIDA. 6q 



Tralia (Alexia?) minuscula Dall. 



"Shell minute, smooth, yellowish white, with about five whorls beside 

 the minute, rounded, sinistral, half-immersed nucleus; spire moderately 

 elevated, pointed; sculpture of fine regular impressed lines, parallel 

 with the incremental striae; suture distinct; last whorl with nearly par- 

 allel sides, rounded and slightly attenuated base; columella stout, 

 strongly twisted, white, short, outer lip nearly straight, somewhat thick- 

 ened, especially anteriorly, not lirate or denticulate internally; body 

 with two revolving ridges, the posterior one fainter and placed in 

 advance of the middle of the whorl; a slight wash of callus on the 

 body; aperture about one-third as wide as the body whorl to the left 

 of it, pointed behind, rounded and slightly oblique in front. Soft parts 

 unknown. 



"Lon. of shell, 3.8 mm. ; of last whorl, 3.0 mm. ; maximum diameter 

 of shell, 2.0 mm. 



"This interesting little species was found in the wash of the beach at 

 Magill's Bay, Tampa, by Mr. Simpson, in moss in a dried-up marsh near 

 Tampa, by Dr. Velie, and on the shores of the lagoon at Exuma Island, 

 Bahamas, by Dr. J. J. Brown, and by the U. S. Fish Commission in 

 1885. The soft parts are unknown, and its reference to Tralia is, 

 therefore, provisional only. It differs from Tralia, scusu stricto, as 

 typified by Tralia pusilla, in the absence of the wave and internal 

 ridge in outer lip. This, however, may be only a specific character. 

 At all events, it is without the internal lirae of Melampus, etc., and un- 

 til the character of the foot is known, may perhaps best be located in 

 the above-mentioned group." 



The above is Mr. Dall's description of this species. Only three or 

 four specimens were found. 



Pedipes naticoides Stearns. Beach at Magill's Mound. 



Pedipes elongatus Dall. I found the last three species occasionally 

 at the above locality, washed up in grass, with quantities of several 

 species of Truticatella, Cerithium nigrescens and muscarum, Columbella 

 ntstica, and a number of other small species. 



Blauneria lieteroclita Mont. With the above; rare. 



Linncza humilis Say. Terraciea Island; ponds south of the Mana- 

 tee River. Abundant. In the month of November, 1884, I found this 

 species with eggs deposited on the outside of their shells. Also found 

 near Tampa. Smaller and darker colored than those I have collected 

 in the Northern States. 



Linntza columella Say., var. casta Lea. Pond near Fogartyville, 

 Manatee County. 



Physa pomilia Conrad. Ponds in pine woods, Manatee County. 



Physa heterostropha Say. Ponds, Terraciea Island. 



P/iysa elliptica Lea. Pond near Fogartyville. 



* Physa gyrina Say. Volusia County, Cunningham. 



*Ameria scalaris Jay. Sumpter County, Cunningham. 



Planorbis trivolvis Say. Ponds on Terraciea Island. 



