466 



MR. G. S. BRADY'S MONOGRAPH OF 



than twice as long as broad. Surface of the shell smooth, pellucid, and finely punctate, 

 the brown body of the animal shining through. Terminal claw of the upper antennae 

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

 dilated at the extremity. Pirst maxilla elongated, the distal extremity curved upwards, 

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

 there is a considerable interval. The basal joint of the mandibular foot bears on the 

 anterior margin a series of eight short setee, the last three or four of which are bifid or 

 trifid at the extremity. Postabdominal laminae short, subovate, bearing seven or eight 

 long slender claws, the last two being much the longest. 

 Length iV in- ' ' 



Hab. Dredged in 7-30 fathoms at Oban [Rev. A. M. Norman) ; Guernsey [Mr. J. G. Jeffreys) ; taken in 

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



Genus 3. Bradycinetus, G. O. Sars. 



Shell thicker and more compact in structure than in the preceding genera ; notch 

 deep, with setose margins. Upper antennae six-jointed, the apical setee nearly equal and 

 of no great length. Natatory branch of the lower antennae nine-jointed, its setae short ; 

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

 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 

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

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

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

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

 mostly moving slowly amongst mud, not swimming nimbly like the preceding." 



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 of 

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

 Pisclier's Aster ope groenlandica belongs to this genus, and is either identical with, or 

 closely allied to, JB. hrenda. 



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



Cypridina 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, 2, 



3 & 7. 



Brady cinetus globosus, G. O. Sars, loc. cit. p. 110. 



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

 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 subtruncate, 

 anterior somewhat narrowed, prominent, and obtusely angular above the notch, which is 

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



