ALPHEUS PANAMENSIS. I55 



PANDALOPSIS Bate. 



Rep. CImlleuger Macrura, p. C71, 1888. 



Pandalopsis ampla Bate. 



Rep. Challenger Macrura, p. 671, Plate CXV. Fig. 3, 1888. 



Station 3418. 660 fathoms. 1 specimen. 

 " 3424. 676 " 6 specimens. 



The types of this species were collected in 600 fathoms, off Monte Video. 



Pandalopsis is a MS. name of A. Milne Edwards's, adopted by Bate. This 

 genus is distinguished from Pandalus by the greatly elongated flagella of 

 the antennules, and by the laminate expansions of the merus of the third 

 maxillipeds and of the ischium of the first pair of legs. The third maxilli- 

 ped has no exopod. The epipods of the legs are rudimentary, as in Pandalus 

 and Heterocaqms. The branchial formula is the same as for Pandalus and 



12 + (7) 

 The generic distinctions between this genus and Pandalus drawn from 



the branchiae and epipods, mentioned by Bate,* do not exist. 



The right and left legs of the second pair are of about equal length in 



P. ampla. 



Family ALPHEID.E. 



ALPHEUS Fabe. 



Suppl. Eut. Sjst., pp. 380, 404, 1798. 



Alpheus panamensis Kingsl. ? 



Bull. U. S. Geolog. aud Geograph. Surv., Vol. IV., No. 1, p. 192,1878. 



Five specimens (two of them ovigerous females), without a label, agree 

 pretty well with Kingsley's description of A. panamensis. There is a small 



* Op. cit , p. 671. 



