454 



elongated, propoclos narrow oblong, with the palm very short. Pereiopoda of 

 the usual structure. Last pair of uropoda projecting somewhat beyond the 

 others, rami subequal and lanceolate in form. Telson comparatively broad, 

 gquamiform, entire. 



RemarJcs. This genus, established by Boeck, differs considerably 



from those treated of in the preceding pages, as regards the structure of the oral 

 parts, and especially is the structure of the 1st pair of maxillae and that of the 

 maxillipeds rather peculiar. But otherwise it shows itself to be a true member 

 of the family Cattiopiidce, as defined above. It comprises as yet but a single 

 species, to be described below. 



11. Laothoe Meinerti, Boeck. 



(PI. 160). 

 Laotlioiis Meinerti, Boeck, Crust, atnph. bor. & arct. p. 122. 



Body rather elongated, and nearly cylindric in form, with the back 

 evenly rounded throughout. Cephalon about the length of the first 2 segments 

 of mesosome combined, and rather deep, rostral projection very small, lateral 

 corners somewhat deflexed, and narrowly rounded at the tip, being defined 

 posteriorly by an angular notch, postantennal ones rectangular. The 3 

 anterior pairs of coxal plates oval quadrangular in form, and not very 

 unequal in size ; 4th pair somewhat expanded in their outer part, and slightly 

 emarginated posteriorly, with the infero-posteal corner somewhat projecting. 

 Last pair of epimeral plates of metasome rather large, and scarcely at all 

 produced at the lateral corners, posterior edge evenly curved. Eyes oblong 

 oval in form, somewhat widening below, visual elements well developed, 

 pigment light red. Superior antennae (in female) not attaining half the length 

 of the body, 1st joint of the peduncle rather thick, and much longer than the 

 other 2 combined, flagellum very slender, about 4 times as long as the 

 peduncle, and composed of numerous small setiferoiis articulations. Inferior 

 antennae exceeding the superior ones by about 1 /s of their length, the last 

 2 joints of the peduncle about equal-sized, flagellum fully 3 times as long as 

 the peduncle. Anterior gnathopoda with the carpus slightly dilated in the 

 middle, and nearly fusiform in outline, propodos about same length, and 

 narrow oblong in form, palm nearly transverse, and scarcely half as long as 

 the hind margin. Posterior gnathopoda somewhat more slender than the 

 anterior, with the propodos very narrow, nearly linear in form. Pereiopoda 

 moderately slender, and edged with fascicles of slender spines, the 3 posterior 



