1879.] NATURAL SCIENCES OP PHILADELPHIA. 407 



short stiff hairs arranged in transverse rows. Front advanced, 

 three-lobed, median lobe projecting beyond the others. Chelipeds 

 short, stout, unequal, and clothed above with a short pubescence, 

 interspersed in which are stiff hairs, similar to those of the cara- 

 pax. Carpus short, length and breadth about equal, the inner 

 margin expanded, and armed with four or five acute teeth. Hands 

 short and broad, almost sub-clielate, the thumb being very short, 

 and the dact}dus strongly curved. Ambulatory feet with pubes- 

 cence and hairs similar to those on the carapax. 



Specimens were collected at Sarasota Bay and Key West. 



Edwards's specimens were from Charleston, S. C. 



Porcellana sayana. 



Pisidia sayana Leach, Diet. Sci. Nat., xviii. p. 54. 

 Porcellana ocellata Gibbes, Proc. Am. Assoc., iii. p. 190. Ibid., Proc. 

 Elliot Soc, i. p. 12, pi. i. f. 2. 



Quite a number appear in this collection from Sarasota Bay. 

 Gibbes' types came from South Carolina; Stimpson reports it 

 from Fort Macon, N. C, Florida Ke} 7 s, and St. Thomas. 



At my request Mr. Edward J. Miers very kindly examined 

 Leach's type in the British Museum, which was sent by Say un- 

 der the name Porcellana galathina. He says : " Leach's speci- 

 mens of Porcellana (Pisidia) sagana are certainly not referable 

 to P. sexspinosa, as described by Gibbes, but appear to belong to 

 P. ocellata of the same author. They agree well with Gibbes' de- 

 scription and with specimens of P. ocellata received by the British 

 Museum from the Smithsonian Institution, differing only in be- 

 ing of smaller size and in no longer presenting any traces of the 

 pink reticulations." 



Porcellana sociata Say. 



Porcellana soriata Say, Journ. Phila. Acad., i. p. 456. 

 Pisidia soda Leach, Diet. Sci. Nat., xviii. p. 54. 



Porcellana sociata Gibbes, Proc. A. A. A. S., iii. p. 190. Ibid., Proc. 

 Elliot Soc, i. p. 12, pi. i. f. 6. 



Professor Webster collected specimens at Florida Bay and 

 Harbor Key. Other localities are Fort Macon (Stra.), South 

 Carolina, and Key West (Gibbes), Georgia, and Florida (Say, 

 Leach). 



