188 6. 0. SARS, 



The anterior lip (fig. 8) is of a rounded form, and somewhat narrowed 

 in its outer part, witli the tip scarcely emargiuated and finely ciliated at 

 the edge. 



The posterior lip (fig. 9) is comparatively large and of the usual sub- 

 membranaceous consistence. The lateral lobes are rather broad and, as 

 usual, ciliated at the tip and the inner edge, whereas they outside project 

 as an obtusely conical lappet. There is only a very slight rudiment of inner 

 lobes. 



The mandibles (figs. 10 and 11) are strongly built, M'ith the molar ex- 

 pansion well developed and the cutting edge divided, as usual, into 2 super- 

 posed, dentated plates, somewhat differently shaped in the 2 mandibles. 

 Between the cutting edge and the molar expansion occurs the usual series 

 of curved, finely ciliated spines. The mandibular palp (see fig. 10) is of 

 moderate size, being scarcely longer than the mandible itself. Its terminal 

 joint is about as long as the 2nd, somewhat compressed, and gradually 

 tapering distally. It carries on the inner edge a dense seiies of comparatively 

 short, ciliated spinules, and has besides on the tip and the outer edge several 

 slender bristles. 



The 1st pair of maxilte (fig. 12) exhibit the normal structure. The 

 masticatory lobe is moderately strong, and armed on the truncated tip with 

 a rather great number of partly denticulated spines arranged in a double 

 row. The basal lobe is oval in form, and carries along the inner edge a row 

 of about 1 ciliated setae. The palp is, as in most other Gammaridse, somewhat 

 differently developed in the 2 maxillae, its terminal joint being on the right 

 maxilla very much expanded and having the distal edge divided into a 

 number of coai'se denticles, whereas on the left maxilla this joint is much 

 narrower and provided at the tip with a few slender spines. 



The 2nd pair of maxillaj (fig. 13) have the outer lobe a little lai-ger 

 tliau the inner, both being oblong oval in form and carrying at the tip a 

 number of delicate, curved bristles. The inner hibe, moreover, is provided 

 with about 6 ciliated setae arranged in a somewhat oblique series on its 

 lower face. 



The maxillipeds (fig. 14) are, as usual, quite fused together at the base, 

 springing oif from a common basal part composed of 2 somewhat flattened 

 segments. The basal lobes, springing oft" from the 2nd segment of the basal 

 part and lying in close juxtaposition, are of moderate size and subquadiau- 

 gular in shape. They carry at the tip a number of delicate curved 

 bristles, between whicli there occur a few short denticles, and have the 

 inner edge fringed with a series of ciliated settc. The masticatory lobes are 

 somewhat larger than the basal ones, and are armed along their inner edge 



$n3.-MaT. CTp. 188. jq 



