540 



spinous. Telson rather large and thick, oval in shape, with a dorsal fascicle 

 of spines on either side of the obtusely ronnded, or slightly angular tip. 



Hemarhs. — This genus was established by Costa in the year 1853, to 

 include the species 71/. firylloialpo, described l)elow. The genus Lfmhos of 

 .Sp. Bate is identical with Costa's genus. It is chiefly distinguished from 

 the nearly-related genera Aora and Autono'e by the structure of the anterior 

 gnathopoda in the male, the shajie of which approaches a cheliform character 

 on account of the unusual development of the carpus. This characteristic is 

 still more pronounced in tlie genus Sthnpsonia of Sp. Bate, which is closely 

 allied to the present genus, and .should, perhaps, more properly ))e combined 

 witli it. The genus comprises several species from both the northern and 

 southern hemispheres. To the fauna of Norwaj' belong 3 species, to be 

 de.scribed Ijelow. 



1. Microdeutopus anomalus, (Rathhe). 



(PI 191). 



GanwKirwi anniimhts. Ratlike, Acta Acnd. Leop. T. XX, p. 63, PI. IV, lig. 7. 



Syn : Lenibos cambriensis, Sp. Bate. 

 » Aiitonoc anomala, BruzeliiLS. 



Body very slender, nearly cylindrical in form, with the back evenly 

 rounded throughout. Cephalon scarcely attaining the length of the fir.st 2 

 segments of mesosome combined, lateral corners somewhat deflexed, and rounded 

 at the tip. Anterior pairs of coxal plates in female soai-cely deeper than the 

 corresponding segments; 1st pair forming in front an acute angle, which in 

 the male is prolonged to a strong acuminate px'ojection; the 3 succeeding pairs 

 evenly rounded at the tip; 5th pair having the anterior lol)e nearly as deep 

 as tlie preceding pair. Last pair of epimeral plates of metasome terminating 

 in a narrowly-rounded lobe. Eyes small, roiind, pigment black, with a whitish 

 coating. Superior antennae equalling V» "f the length of the body, 1st joint 

 I if the peduncle nearly as long as the cephalon, and having underneatli 

 the tip a slender spine, 2nd joint consideralily longer tlian the 1st, 3rd joint 

 about Vs as long as the 2nd, flagellum twice the length of the peduncle, and 

 very slender, being composed of about 22 articulations, accessory appendage 

 well develo])ed, nearly twice as hmg as the last ])eduncular joint, and 4-articulate. 

 Inferior antennae scarcely more than half as long as the supei'ior, tlie last 2 

 joints of the peduncle about e([ual-sized, flagellum equalling in length the last 



