412 



lamella, palp not very large, with the terminal joint very small. First pair 

 of maxillae having the terminal joint of the palp not at all expanded; 2nd 

 pair comparatively larger than in the preceding genera. Maxillipeds much 

 smaller than in Nicippe. basal lobes nearly obsolete, masticatory lobes of 

 moderate size, and edged with a comparatively small number of curved spines, 

 palp not very large. Gnathopoda not nearly so powerful as in the said 

 genus, propodos rather narrow, though much more fully developed than in 

 rtirdalisca, dactylus simple, unguiform. The 2 anterior pairs of pereiopoda 

 of the usual structure; the 3 posterior pairs rather slender and successively 

 increasing in length, basal joint rather narrow, dactylus slender, subulate. 

 Last pair of uropoda projecting considerably beyond the others, rami subfoli- 

 aceous, and setous inside, the outer one with a distinct terminal joint. Telson 

 narrow, unarmed, and deeply cleft. 



Remarks. Boeck says of this genus, that it is very nearly allied 

 to Pardalisca, only differing in that the cephalon is smaller, the peduncle of 

 the inferior antennae somewhat more prolonged, and the 3 posterior pairs of 

 pereiopoda very slender. As to the 2 last-named characteristics, there is 

 indeed scarcely any noticeable difference between the 2 genera, and thus, of 

 the distinguishing features named by Boeck, only the comparatively small 

 size of the cephalon remains. As shown by the above diagnosis, there are, 

 however, besides this latter characteristic, several well marked differences, 

 apparently of generic value, to be found, especially in the structure of the 

 oral parts : and the gnathopoda are evidently also rather different in shape 

 from those in Pardalisca. According to Boeck, the genus comprises no less 

 than 5 species, 2 of which he describes as H. abyssi and H. yrandicornis, the 

 other 3 not being indicated either by name or locality. The 2 species 

 described are, however, most assuredly founded on the 2 sexes of one and 

 the same species, the only one which, as yet, has come to my knowledge. 



0. Halice abyssi, Boeck. 



(PI. 145, fig. 2). 



Halice alyssi, Boeck, Crust, amph. bor. & arct. p. 72. 

 Syn. : H. grandicornis, Boeck (male). 



Body moderately slender, with the mesosome in female about the 

 length of the remaining part of the body, in male scarcely longer than the 

 metasome. The 2 anterior segments of urosome each produced dorsal!}^ to 

 an acuminate deflexed projection, the posterior one being the larger. Cephalon 

 not nearly attaining the length af the first 2 segments of mesosome combined, 



