146 Part 111 — Twenty-third Annual Report 



The posterior antennae are moderately slender and elongated, and the 

 end joint is armed with a hook-like process on the outer distal angle in 

 addition to the usual terminal setae (fig. 12) ; outer ramus small, uniarticu- 

 late, and provided with two marginal and two terminal setae. 



Mandibles small and armed with a few bluntly-rounded teeth on the 

 biting edge; palp small and furnished with a minute uniarticulated 

 branch (fig. 13). 



Maxillae and first maxillipeds as in L. thoracica. 



Second maxillipeds also similar to those of that species, the terminal 

 claw being long and slender (fig. 14). 



In the first pair of natatory legs the inner branch has the joint slender 

 and nearly twice the length of the entire outer branch, and it bears a few 

 minute bristles on the inner margin ; the end joint is small and armed 

 with a moderately stout and elongated claw. The outer branches are 

 composed of three subequal joints, but the last is rather smaller than 

 either of the other two (fig. 1 5). Outer branches of the second, third, 

 and fourth pairs all three-jointed, elongated, and slender, and bearing long 

 slender spiniform marginal setae and very long terminal bristles, as shown 

 by the drawing (figs. 16-18); inner branches short, two-jointed, and 

 scarcely reaching to the second joint of the outer branches ; first joint 

 considerably shorter than the second, and each furnished with a single 

 seta near the end of the inner margin ; the end joint of the inner branches 

 of the second and fourth pairs has a single seta on the lower half of the 

 outer margin, two on the inner margin, and two at the apex; but in the 

 third pair there are three setae on the inner margin of the end joint of the 

 inner branches. 



Moreover, a single seta springs from near the middle of the inner 

 margin of the end joint of the outer branches of the second pair, and two 

 from the inner margins of the same joints of the third and fourth, but 

 otherwise the armature of the outer branches of the second, third, and 

 fourth pairs is much alike. 



Fifth pair of moderate size, primary joint broadly oblong ; the inner 

 distal angle slightly produced, and furnished with three setae on the inner 

 margin — one being near the middle and two near the distal end ; the 

 produced part bears one seta also on its inner margin and three others of 

 small size and unequal length at its apex. The primary joint also carries 

 a slender spiniform seta on the outer distal angle ; the secondary joint is 

 narrow and elongated, the length being equal to fully four times the 

 width at the broadest part ; it is provided with about four setae on the 

 outer margin, one on the inner margin, and one on the produced and 

 narrow apex (fig. 19). 



Habitat. — In an old quarry at Granton, Firth of Forth, which is open 

 to the sea ; collected August 25, 1894 ; rare. This species differs 

 from any other known to me ; no male has yet been observed. 



Fam. Cletodeid^e. 



Genus Cletodes, Brady (1872). 



Cletodes Sarsi,* sp. n. PI. xii., figs. 1-9. 



Description of the Female. — This species is somewhat intermediate 

 between Cletodes neglecta and C. longicaudata, but differs from C. neg- 

 lecta in having longer furcal joints, and from C. longicaudata in the 

 f ureal joints of that species being still more elongated (fig. 1). The 

 length of the specimen figured is about -5mm. (-^ of an inch). 



* Named in compliment to Herr Professor G. 0. Sars r the eminent Norwegian 

 carcinologist. 



