240 



recently alyo in the Trondhjeiiisfjord. Out of No^wa3^ it has not yet 

 been recorded. 



4. Stenothoe monoculoides (Mont). 



(I'l. 82, % 1). 



Cancer gammararus monoculoides, Montagu, Transact. Lia. Soc. XI. 



Syn: Monlagua monoculoides, Sp. Bate. 



Body very short and compact, with broadly-rounded back. Cephalon 

 scarcely at all produced in front, lateral corners somewliat projecting and 

 obtusely angular at the tip. Coxal plates ver}^ large, 2nd pair scarcely 

 smaller than the 3rd, and somewhat expanded distally, inferior and anterior 

 edges forming together a rather bold curve; 3rd pair but very little 

 expanded in their outer part; 4th pair larger than the 2 preceding pairs 

 combined, and obtusely rounded posteriorly, distal edge but very slightly 

 curved. Last pair of epimeral plates of metasome somewhat prodiiced at 

 the lateral corners. Eyes small, rounded, with well-developed visual elements, 

 and dark red pigment. Antennse comparatively short and stout, the superior 

 ones scarcely exceeding Va of the total length, 1st joint of the peduncle 

 rather thick, and much shorter than the cephalon, the other 2 successively 

 smaller, flagellum half as long again as the peduncle, and composed of 

 about 12 articulations, very sharply defined from each other. Inferior 

 antennae nearly of same length as the superior, last joint of the peduncle 

 longer than the penultimate one, flagellum exceeding in length the peduncle, 

 and composed of about 10 articulations. Palp of the maxillipeds compara- 

 tively shorter and stouter than in the other species, with the 1st joint very 

 large and laminar. Gnathopoda rather strong, and scarcely differing in the 

 2 sexes, both pair.s distinctly subcheliform, and nearly of same structure, 

 though somewhat unequal in size; carpus in both pairs very short, and 

 produced inferiorly to a small setiferous lobe, propodos rather large, oblong 

 quadrangular in form, palm well defined, nearly transverse on the anterior 

 pair, somewhat more oblique on the posterior pair, its edge smooth, having 

 on the posterior pair 2 small spinules in its hind part. Pereiopoda extremely 

 slender, meral joint comparatively short, and but little produced at the end, 

 propodal joint, on the other hand, rather elongated, dactylus very strong 

 and curved; basal joint of the 2 posterior pairs not attaining half the length 

 of the remaining part of the leg, its posterior edge slightly crenulated. 

 Last pair of uropoda with the basal joint ver}^ short and broad, scarcely 

 longer than the 2nd, and armed with 3 strong denticles, terminal joint about 

 the same length, and spiniform. Telson rather large, oblong oval in form, 

 and without any trace of denticles, outer part evenly rounded off. Body 



