Boone, Crustacea, Cruises of "Eagle" and "Ara," 1921-28 137 



each with many bristles; the dactyl short, curved, with a bifid tip 

 and a series of three or four spines along the inferior lateral margin. 

 Synonymy. — Acanthephyra dehilis A. Milne Edwards, Compt. Rend., 



XCIII, p. 13, 1881 ; Recueil de figs, de Crust., pi. 33, fig. 2, 1883. 



—Faxon, BuU. Mus. Comp. Zool., vol. 30, p. 162, 1896.— T. 



Richard, Bull. Mus. Oceanog. Monaco, No. 41, p. 17, 1905.— 



Stanley Kemp, Fish. Ireland, Sci. Invest., 1905 (issued 1907), 



p. 16 ; ihid, 1908, p. 59, pi. 6, figs. 1-15. 

 Miersia gracilis Smith, Bull. Mus. Comp. Zool., vol. 10, p. 70, pi. 11, 



fig. 4, 1882. 

 Systellaspis dehilis Coutiere, Bull. Mus. Oceanog. Monaco, No. 48, p. 



5, fig. 2, 1905; ihid. No. 70, 1906, figs. 1-4, development.— K. 



Stephensen, Rept. Danish Oceanog. Exped. 1908-1910, issued 



Aug., 1923, p. 54. 

 S. dehilis, variety indica deMan, Mon. Siboga Expeditie, Mon. 39A3, 



p. 51, pi. 6, figs. 11-llf, 1920. 

 Systellaspis houvieri Coutiere, ihid, No. 48, p. 8, fig. 3, 1905. 

 Acanthephyrs gracilis Hansen, Crust. Malacostraca, Danish Ingolf 



Exped., vol. 3, part 2, p. 76, 1908. 



Family: PALAEMONIDAE. 



Genus: LEANDER Desmarest. 



Leander tenuicomis (Say). 



Plate 47. 



Type: Say's type came from the "Banks of Newfoundland" and 

 consisted of two specimens, one of which was deposited in his personal 

 cabinet, the other in the Academy of Natural Sciences of Philadelphia, 

 where it still is in good condition. 



Distribution : Abundant in the Southern United States, the West 

 Indian region as far south as the mouth of the Amazon, in Brazil; 

 also common in the "Sargasso Sea," pelagic in the seaweed. More 

 rarely found in the northern waters adjacent of the path of the 

 Gulf Stream, by which it has been swept from its normal habitat. 



Material examined: Two specimens, one of which is ovigerous, 

 taken in Sargasso, on the south coast of Cuba, February, 1923, by 

 the "Am." One, Turtle Harbor, Florida, 2^^ fms., April 28, 1926. 

 Three, Hogsty Key, San Salvador, B. W. I. 



Technical description: Animal small, usually an inch or less in 

 length; in color, the living animal imitates the yellowish, blotched 

 tones of the seaweed. Rostrum about as long as the carapace, directed 



