Boone, Crustacea, Cruises of "Eagle" and "Ara," 1921-28 181 



as long as the antennular peduncle, with the margins ciliated. The 

 flagellum is a little longer than the body of the animal. 



The external maxillipeds are stouter than the first legs and with the 

 distal margin acuminate and armed along both lateral margins with 

 a series of long, articulated spines, and a few of these are also present 

 on the inner face of the article. 



The first legs are robust, with the propodus rather stout, armed on 

 the upper lateral margin with several tufts of bristles. The dactyl is 

 about one-half as long as the propodus, slender, curved, acuminate, 

 closing upon the propodus like a claw. 



The second legs are chelate, very long and slender, with a multi- 

 articulate carpus consisting of about twenty joints; the propodus is 

 scarcely longer and of no greater diameter than the distal carpal 

 article ; the dactylus is small, curved, less than one-third of the length 

 of the palm of the propodus, toothed distally and closing upon the 

 propodal finger. 



The third, fourth and fifth legs are monodactyl, of nearly equal 

 length, slender, each with the ischium nearly one-half as long as the 

 elongate merus, with a subdistal tuft of stiff setae, which stands out 

 fan- wise, encircling the base of the dactyl. 



The latter is scarcely two-fifths as long as the propodus and is 

 dorsoventrally flattened, with these surfaces concave between the 

 carinate margins which converge distally to a sharp point. 

 Synonymy. — Glyphocrangon aculeatum A. Milne Edwards, Ann. Sci. 



(6), tome 11, p. 5,1884. 

 Glyphocrangon aculeata Spence Bate, Rept. Voy. "Challenger," 

 Zool., vol. 24, p. 521, pi. 94, fig. 1, 1887.— Boone, Bull. Bingham 

 Oceanog. Coll., vol. 1, art. 2, p. 121, text fig. 27, 1927 (and notes 

 on ecdysis). 



Family: CRANGONIDAE. 



Genus: CKANGON Fabricius. 

 Crangon septemspinosa Say. 



Plate 68. 



Type: Say's type came from the coasts of the southern United 

 States ; he notes that it is found as far south as east Florida, common 

 in the bay shores and inlets of the sea. 



Diagnostic characters: This Crangon is closely allied with the 

 Crangon vulgaris of European waters, from which it differs only in 



