12 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 98 



of the chela. The larger and deeper of these two inconspicuous 

 grooves runs back from the articulation of the movable finger ; the 

 other, a little below the articulation, is shorter than the larger groove. 

 The tip of the rostrum extends very little or scarcely in front of a 

 line joining the anterior margins of the orbital hoods. 



Dr. Edmondson writes me that he is unable to find any evidence of 

 these longitudinal grooves on the outer side of the palm, and that the 

 rostrum of his C. hawaiicnsis is even longer and sharper than indi- 

 cated in his figure, that it extends to a greater distance beyond the 

 orbital hoods than is shown in the figure, and that the terminal por- 

 tion of the rostrum is very narrow. 



The specimens we have are certainly distinctively different from 

 C. lunt'ciiiensis on the basis of the character of the larger chela and 

 the rostral length alone. Therefore, in spite of the close agreement 

 between our specimens and the type of the species in almost all other 

 points, I venture to refer to them as the Clipperton Island subspecies 

 of Edmondson's species. 



Crangon paracrinitus Miers variety 4 



These four specimens seem to bridge the differences existing be- 

 tween the species proper and its known variety bcngalcnsis Coutiere. 

 As in that variety, our specimens lack the spine with which the minor 

 chela of the type is armed. On the other hand, the proportions of 

 the carpal joints of the second legs are more like those of the typical 

 specimens than those of the varietal form. The rostrum of our speci- 

 mens is small, there are no orbital grooves, and the hands and carapace 

 are smooth. I do not feel justified at this time in giving these variants 

 of C. paracrinitus a name. 



Crangon pacificus ( Dana) 2 



Crangon species 2 



Synalpheus nobili Coutiere 28 (9 ovig.) 



These specimens were of a brown-red color with darker transverse 

 bands across the abdomen. 



Poinagnathus corallinus Chace 2 



Lysmata paucidens Rathbun i> 2 (3 °vig.) 



This species was originally described from the Hawaiian Islands 

 ( Rathbun, Bull. U. S. Fish Comni. for 1903, vol. 23, pt. 3, p. 913, 

 pi. 24, fig. 4 (1906)) and is common about Oahu and other islands 

 and shoals in the Hawaiian area. 



