Mr. C. Spcnce Bate on a new Genus of Macrura. 71 



in form, the distal margin as well as the upper and lower angles 

 being lurnished with long hairs. The propodos is rather 

 shorter than the carpus, conical in form, and furnished with 

 numerous stiff hairs that have their surface thicklj armed 

 with short sharp-pointed teeth. The dactylos is long, slender, 

 and hair-like, and onlj differing from those hairs with which 

 it mingles by being a little more robust. The basecphysis is 

 long, slender, and multiarticulate, the basal joint being robust 

 and cylindrical. 



The second pair of gnathopoda {{) are about one third longer 

 than the first ; the coxal joint is stout, short, and supports an 

 efficient but not long podobrancliial plume. The basisal 

 joint is large and strong and produced beyond the ischial 

 articulation to form a strong process, with which articulates 

 the multiarticulate basecphysis, which resembles that of 

 the first pttir excepting in its relative length. The iscliium 

 is cylindrical, having the anterior margin smooth and the 

 posterior fringed with a few simple hairs. The meros is 

 longer and not quite so robust as the ischium, and fringed on 

 the sides and posterior margin with a few simple hairs. The 

 carpus is long and slender, having the distal extremity some- 

 what stouter than the proximal, and the lower distal por- 

 tion is furnished with a few hairs. The dactylos is slender 

 and slightly tapering to an extremity that is armed with a 

 few hairs, the more important of which are fringed with a few 

 cilia. 



The first pair of pereiopoda [n) are short, feeble, and chelate ; 

 the coxa is short and supports an elongate podobranchia and 

 a short appendage, which I take to be the rudimentary mastigo- 

 branchia. The basis is long and stout, rather broader at the 

 distal than the proximal extremity, and supports a long and 

 'slender multiarticulate basecphysis that reaches considerably 

 beyond the extremity of the dactylos. The ischium is short, 

 being scarcely longer than it is broad, and fringed on the 

 posterior margin with a few minute hairs. The meros is 

 about three times as long as the ischium and similarly 

 fringed on the posterior margin and furnished with one long- 

 ciliated hair on the anterior distal angle. The carpus is 

 slightly longer than the meros and furnished with one ciliated 

 hair on the posterior margin just behind the distal angle and 

 another on the anterior distal angle ; the propodos increases 

 gradually to the level of the dactyloid joint, where it is 

 broadest ; the pollex is produced as a simple pointed process, 

 slightly swollen previously to its reaching the apex, where it 

 is furnished with two small spines, and two others a little 

 posteriorly on the outer margin ; two or three long and ciliated 



