THE NAUTILUS. 



Gulf, I made a careful search for land-shells among the drift material 

 lying along the edges of a marshy tract about 150 yards from the 

 bay shore. This drift consisted of broken branches and logs from 2 

 to 8 inches in diameter, masses ot twigs and dead rushes and a few 

 weather-worn planks. The Greek captain of the schooner " Louisa " 

 advised me to use extreme caution in working through the drift, as 

 ground rattlesnakes (Sistrurus miliarius L.) were supposed to be 

 abundant on this portion of the peninsula. The snakes, however, 

 failed to materialize. 



In the course of an hour I found nearly 250 shells, representing 

 eleven species. The only living specimens in the lot were three ex- 

 amples of Succinea concordialis Gld., which were attached to the 

 under side of a plank. The balance of the lot consisted of dead 

 shells, but the majority were in good condition, some even retaining 

 the epidermis. The following is a list of the species obtained ; 



Polygyra dorfeuilliana Lea. Numerous examples in good condi- 

 tion. This is probably the southernmost record for this species. 

 Pilsbry (Proc. Acad. Nat. Sci. Phila., 1907, p. 535) records a single 

 example from Galveston, but suggests that it may have been imported. 

 I found one specimen on the B. Y. P. U. camp-ground at Palacios. 

 It was a dead shell in good condition and was in a situation that pre- 

 cluded any likelihood of its being a drift shell carried inland through 

 human agency. 



Polygyra espiloca Rav. Two examples. This species has been 

 previously recorded from Indianola (Pilsbry). 



Polygyra fratema friersoni VWs,.; 14 examples in fair condition. 



Polygyra texasiana Mor. 



Polygyra mooreana W. G. B. 



These two species comprised nearly two-thirds of the entire lot. 

 Living examples of both were found near Palacios. 



Polygyra leporina Gld. A single imperfect example. 



Polygyra cereolus volvoxis Pfr. Three examples in fair condition. 

 This species has also been recorded from Galveston (Pilsbry) and 

 Virginia Point, Galveston county (Singley). 



Succinea concordialis Gld. Three living specimens and a number 

 of dead ones. 



Helicina orbiculata tropica Jan. Abundant. Living examples at 

 Palacios. 



Praticolella herlanderiana Mor. Abundant. Living at Palacios. 



