237 



fascicles of short spines, meral joint of tlie 3 posterior pairs somewhat produced 

 at the posterior corner, basal joint of last pair broadly ovalin form, and about 

 half as long as tlie remaining part of the leg. Last pair of uropoda 

 with tlie basal joint about the length of the other 2 combined, and armed 

 on -the upper face with a row of G denticles. Telson oblong oval, obtusely 

 pointed at the tip, and armed with 2 pairs of dorsal denticles. Body pellucid 

 whitish, mottled with yellow, and having besides a number of scattered 

 pinkish patches, the largest of which occupies on each side about the 

 centre of the anterior division of the body. Length of adult female reaching 

 5 mm, of male nearly 6 mm. 



RemarJis. — The' present species, first described by Sp. Bate as 

 Montagiia marina, is chiefly distinguished from its nearest allies by the 

 structure of the posterior gnathopoda, as also by a few other minor 

 differences mentioned in the above diagnosis. It would seem to be closely 

 allied to S. valida of Dana. 



Occurrence. — Off the south and west coast of Norway this species 

 is bj' no means rare, occurring, as a rule, in moderate depths, from 20 to 

 50 fathoms, especially among Hydroidse, to which it is often found 

 clinging. It extends northwards to the Nordland coast (Tjoto), and is also 

 found in the Trondhjemsfjord. 



Distribntion. — British Isles (Sp. Bate), Shetland (Norman), coast of 

 France (Chevreux), Adriatic (Hellerj. 



2. Stenothoe microps, tr. 0. Sars, n. sp. 



(PI 81, fig. 1). 



Very like the preceding species, but nearly twice as large, and 

 somewhat more robust of form. Cephalon about twice the length ot the 

 1st segment of mesosome, lateral corners evenly rounded. Second pair of 

 coxal plates comparatively broader than in the preceding species, and less 

 sinuated posteriorly; 3rd pair rather expanded; 4th pair about as deep as 

 they are broad, distal edge evenly curved. Last pair of epimeral plates of 

 metasome a little more produced at the lateral corners than in S. marina. 

 Eyes very small, rounded, with imperfectly-developed visual elements, and light 

 red pigment. Antennae nearly equal in length, and comparatively shorter than in 

 (S'. marina, the superior ones with the 1st joint of the peduncle much longer than 

 the cephalon, and equalling in length the 2nd, flagellum but little longer than 

 the peduncle, that of the inferior ones rather short, scarcely exceeding the 



30 — Crustacea. 



