156 STALK-EYED CRUSTACEA. 



spine on the inner side of the propodite, at the point of articulation with the 

 dactj-lus, and two pairs of spines on the dorsal side of the telson. These 

 points are not specified in Kingsley's description. The rostrum is acute, its 

 margins ciUated ; it exceeds the orbital spines, reacliing forward beyond the 

 middle of the first segment of the antennule. 



In a later paper * Kingsley says that A. panamensis may prove to be the 

 same as A. spinifrons M. Edw.,t from the coast of Chile. But Milne Edwards 

 states that the smaller chela of A. spinifrons is extremely short, while in 

 A. panaraends it is described as being nearly as long as the larger chela ; in 

 A. spinifrons the antennal scale is very small, while in A. panamensis it ex- 

 tends slightly beyond the peduncles of the antennules. If the " Albatross" 

 specimens are correctly referred to A. panamenis, this species is further dis- 

 tinguished from A. spinifrons by the form of the front, which in the latter 

 species is described as inclined and armed with three spines (the rostral and 

 two ocular) of equal length, while in the specimens before me the rostrum 

 is much longer than the ocular spines. 



Family NEMATOCARCINID^. 

 NEMATOCARCINUS A. M. Edw. 



Anu. Sci. Nat., Zool., G^"" Ser., Vol. XI., AH. 4, p. 14, 1881. 



Nematocarcinus ensifer Smith. 



Eumiersia ensifera Smith, Bull. Mus. Comp. Zool., X. 77, Plate XIII. Fig. 1-9, 1882. 

 Nematocarcinus emiferus Smith, Ann. Rep. U. S. Fish. Comm. for 1882, p. 368, Plate VII. Fig. 1, 1881 ; 

 id. for 1885, p. 604, Plate XVII. Fig. 2, 1886. 



Station 3363. 978 fathoms. 20 specimens. 



BiJl. Essex Inst., XIV. 116, 1883. \ Uist. Nat. Crust., II. 355, 1837. 



