Boone, Crustacea, Cruises of ''Eagle" and ''Ara," 1921-28 111 



Distribution: From off the coast of the Southern United States, 

 southward through the West Indies to Brazil, in shallow water. 



Material examined: One specimen from American Shoal Light, 

 Florida, 50 fathoms, March 3, 1924. One specimen from San Salva- 

 dor, February 13, 1926. Three specimens, taken with dip-net at elec- 

 tric light, Hawks' Nest, Cat Island, Bahamas, January 15, 1928; 

 two, Bimini, January, 1923, collected by the "Ara." 



Color: A very delicate shade of shell-pink, with vivid black eyes. 



Technical description : Animal 52.5 mm. long ; rostrum from tip 

 to orbital angle 8.5 mm. long ; carapace 11 mm. long ; abdomen about 

 33 mm. long. 



Text fig. 4. — Penaeopsis goodei (S. I. Smith). 



enlarged. 



B 



A. Thelycum. B. Petasma, much 



Rostrum directed straight forward, lower margin smooth, upper 

 margin armed with nine (sometimes 8 to 10) teeth, a slight short 

 lateral carina ; the rostrum reaches as far forward as the antennular 

 peduncle; the carapace is ornamented with a median dorsal gastric 

 spine behind which there is no carina; the entire surface is covered 

 with a fine pubescence. There is a well-developed hepatic spine and 

 a small antennal spine. The abdomen is moderately robust, with the 

 epimeral plates scarcely at all produced. The third segment is longer 

 in the median line than the second ; the fifth and sixth segments each 

 have a median dorsal carina, that of the sixth segment terminates in 

 a short spine. The telson is only about two-thirds as long as the inner 

 blade of the uropoda, triangular with a very acuminate median tooth, 

 flanked by a pair of smaller, acute, subdistal teeth. The rhipidura 

 have the inner blade very narrow, with a median ridge and a rounded, 

 distal margin; all margins are ciliated. The outer blade is wider 

 with a more broadly rounded distal margin, the outer lateral margin 



