APPENDIX. 



DESCRIPTIONS OF NEW SPECIES. 



AMPII1PODA. 



SALTATORIA. 



ORCHESTIlDrf. 



( Vol. I. p. 37.*) 



ORCHESTU BREVIDIG1TATA, N.S. 



Specific character. Second pair of gnathopoda with the propodos broader 

 at the distal extremity ; the palm being at right angles with the upper 

 margin, nearly straight, fringed with a series of equidistant setae, and 

 bounded below by an obtusely rounded lobe. 



Length, about eight-twentieths of an inch. 



THIS species differs from any that we have hitherto examined. 

 It bears a closer resemblance to O. euchore, which Dr. Fritz 

 Miiller has described, from the shores of Brazil, than any 

 other with which we are acquainted. 



The most striking feature is that of the form of the second 

 pair of gnathopoda, as described above. 



The dactylos of the second pair of gnathopoda is nearly 

 one-third shorter than the palm, and one-half the width of 



VOL. II. K K 



