OAMMAKIDJi. 105 



antonnac. Superior antcnnoD not longer than the peduncle of the 

 inferior. Inferior antonnte having tho last joint of the peduncle 

 longer than the two preceding, and as long as the llagellum of 

 citlicr pair of antenna). First pair of gnathopoda having tho 

 propodos oval ; palm obliipic, convex, defined by a single strong 

 spine, and fringed -ft-ith a single row of short hooked spines and 

 a few fascicidi of hairs of uneven length ; caqjus produced and 

 broadly dilated. Second pair of gnathopoda having the propodos 

 long and moderately broad ; palm oblique, rounded, and fringed 

 with a few spines ; cai-pus as long as the propodos, and sparsely 

 cUiatcd. First two pairs of pereiopoda alilie, ha\-ing the propodos 

 dilated anteriorly at the distal extremity and fiu-nished with a 

 brush of cilia. Third and fourth pairs of pereiopoda alike ; coxa) 

 as deep as the preceding, those of the third pair of pereiopoda 

 being subequally bilobed ; in both, the basos is oval, and fringed 

 with a few long plumose cilia ; the meros posteriorly produced ; 

 the dact}-los short and posteriorly directed. Posterior pair as long 

 again as the preceding, and terminating in a long styUform dactylos. 

 Three posterior pairs of pleopoda subequal, clean. Tolson lanceolate. 

 Length half an inch. 



Uuh. Banff {Mr. Edward). Taken from a haddock's stomach in 

 from 30 to 40 fathoms near BaniF {Mr. Crregor). 



WTien placed under the microscope, the surface of the integument 

 u})on the pcreion is covered with minute and distant scales, which 

 gradually increase and approach each other untU they assmne their 

 maximum upon the anterior portion of the pleon, and again gradually 

 decrease towards the posterior extremity of the animal. 



2. Monoculodes Stimpsoni, n. sp. (Plate XVII. fig. 3.) B.M. 



Cephalon anteriorly depressed, not incurved. Pleon not carinated. 



Superior antenna3 Inferior anteima) having the last 



j(nnt of tho peduncle not longer than the preceding. First pair of 



gnathopoda Second pair of gnathopoda ha\dng the palm 



more oblique than in the preceding species. Fii'st two pairs of 

 pereiopoda alike, having the dactylos rudimentary, lost in the 

 bioLsh at the extremity of the propodos ; third and fourth paii\s 

 having their coxa) not so deep as tho px'eceding. Three posterior 

 pairs of pleopoda subequal. 



Length about ^ths of an inch. 



Hah. Plymouth (C./S.^.). 



ITic above description and the figure are taken from an imperfect 

 Hpecinien, though enougli remains to establish its distinctness fn)m 

 till' last species. 



