06 



MR. G. S. BRADY'S MONOGRAPH OF 



than twice as Ion- as broad 



Surface of the shell smooth, pellucid, and finely punctate 



wn body of the animal shining thr 



Terminal claw of the upper antennae 



long, .lender, nearly equal in length to the adjacent setae; auditory seta slender 



.1 at the extremity 



Eirst maxilla elongated, the distal extremity curved upwards 



londcr, and terminating in two setae, between which and the range of marginal 



there is a considerable interval 



The basal joint of the mandibul 



foot bears on the 



interior mar-in a series of eight short sets, the last three or four of which are bifid 



Postabdominal lamina short, subovate, bearing seven or eight 



trilid at the extremity. 



Ion- slender claws, the last two being much the longest. 



Length ,V in. 



Hab. Dredged in 7-20 fathoms at Oban {Rev. A. M. Norman) j Guernsey (Mr. J. G. Jeff) 

 the towing-net at Cumbrae {Mr. D. Robertson) . 



Genus 3. Bradycinettjs, G. O. Sars. 

 Shell thicker and more compact in structure than in the preceding g 



ep, wit.li setose margins 



Upper antennae six-jointed, the apical set 



<X> 



nera; notch 

 ly equal and 



of no great Length 



Natatory branch of the lower antennas nine-jointed, its setae short 



obtuse, and 



secondary branch in the female very small and biarticulate, the last joint 



bearing at the apex a curved seta; in the male larger, three-jointed; the last joint long 



and membranaceous, terminating in two short setae. Mandibular feet similar to those of 



Animal 



)> 



the preceding genera, but armed also with a bifurcate mandibular process, in front of 

 which are three toothed spines. First pair of jaws strongly armed with spine-like setae 

 second pair having a strong mandibuliform appendage composed of two robust toothhk 

 processes. Eyes small, of pale colour, and scarcely visible through the shell 

 mostly moving slowly amongst mud, not swimming nimbly like the precedii 



The chief distinguishing characters of this genus are the strong toothed armature of 

 the second pair of jaws, and the peculiar bifurcate process and toothed spines of the 

 mandibular palp. The lower antennae are also more shortly ciliated, and the habits ol 

 the animal are, according to Sars, much less active than those of the allied g 



Pischer's Aster ope grcenlandica belongs to this genus, and 

 closely allied to, B. brenda. 



either identical with 



(Plate XXXIII. figs. 1-5, and Plate XLI. fig. 5.) 



1. Bradycixetus brexda (Baird). 



Cypridlna brenda, Baird, Brit. Entom. p. 181, tab. xxiii. figs. 1 a-g. 



globosa, Lilljeborg, De Crustaceis ex ord. trib. p. 171, tab. xvii. figs. 2-10, tab. xviii. figs. 1, %> 



3&7. 



Brach/cinetus gtobosus, G. O. Sars, loc. cit. p. 110. 



Carapace of the female, as seen from the side, rotundo-ovate ; greatest height in t 

 middle, and equal to about three-fourths of the length. Upper margin slightly arched, 

 sloping steeply in front, inferior well and evenly arched, posterior obliquely subtrunca e, 

 anterior somewhat narrowed, prominent, and obtusely angular above the notch, whicn i 

 large and wide, its inferior angle produced into a short tooth. Outline, as seen fro m 



