32 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. XXXVI. 



SYNALPHEUS TOWNSENDI, new species. 



The rostrum is I5 times as lono; as the lateral teeth, reachino; 

 usually to the end of the proximal third of the median article of the 



Fig. 14. — Synalphei's townsendi. a, frontal and antennal region; c, carpocerite ; 



K, LARGE CHELA ; K" , CARPUS AND MEROPODITE OF LARGE CHELIPED ; Ic" . S.MALL CHELIPED 

 OF FIRST pair; I, FOOT OF SECOND PAIR; HI, FOOT OF THIRD PAIR; III', DACTYL OF THIRD 

 PAIR ; t, TELSON. 



antennule. On some specimens the frontal teeth are longer and 

 more slender. The relative proportions of the articles of the anten- 

 nule are: 2, 1.3, 1. The stylocerite 

 reaches almost the middle of the median 

 article. 



The basicerite bears no spine above, 

 where it terminates in an obtuse angle; 

 its lateral .spine reaches to the distal 

 third, sometimes even to the extremity 

 of the basal antennular article; the an- 

 tennal scale is 5.G times longer than 

 wide ; its lateral spine is long and 

 reaches beyond the extremity of the 

 carpocerite, which is scarcely longer 

 than the antennule, and is 3.5 times as 

 long as wide. 



The large chela has the following relative dimensions: Fingers 1; 

 total length 3.65 to 3.7 ; height 1.25 ; the anterior border of the palm 

 bears a sharp spine ; the carpus is very small, in the form of a coin ; 

 the supero-external margin of the meropodite (which is twice as long 

 as wide) is very convex, terminated by a hooked spine. 



Fig. If). — Sy.nalpheus townsendi 

 PRODUCTUs. a, frontal and 

 antennal region. 



