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the length of the preceding segment. Contrary to what is found in Scopimera globosa and 

 Tympanoiiierus ceratophotms, the lateral margins of the fifth and sixth segment are not diverging, 

 but subparallel; the sixth (penultimate) segment is almost quadrate, as long as broad, and equal 

 in length to the terminal segment, that is semi-circular. The fusing of the fourth and fifth 

 segment, the parallel lateral margins of the constricted part of the abdomen, and the length 

 of this constricted part exceeding that of the proximal enlarged portion, are characters which 

 seem peculiar to this species and are not found in other species of the genus. 



The infra-orbital border projects somewhat beyond the supra-orbital one; it is regularly 

 curved, much sloping backward in its outer portion and regularly crenulate throughout, without 

 any notches; parting from the middle of the border a row of similar crenulations runs obliquely 

 towards the antero-lateral angles of the buccal frame, and on the lower wall of the orbit there 

 are a few hairs, irregularly disposed. 



The side walls of the body are perpendicular, not sloping outward, wholly covered with 

 large, setiferous tubercles; on the subbranchial regions an oblique groove runs from the base 

 of the posterior leg forward and ventrally to the base of the cheliped. 



The eye-stalks are rather elongate, and the bulging cornea reaches beyond the 

 external orbital angle. 



As to the antennulae, the antennae, the epistome and the buccal frame I observed no 

 particular difference between the present and the preceding species. The external maxillipeds, 

 (fig. I b), are similar, but the ischium is not quadrate, but widens distally and is distinctly shorter 

 than the merus, the oblique row of hairs near the anterior margin, which latter is trans- 

 verse, is better developed; the merus has a br oa d 1 y- tr ia ngu 1 ar shape, owing to the 

 fact, that both lateral margins are nearly straight and much converging forward; the flagellum 

 is wholly like that of T. ccratophoi'us and there are the same feathered hairs both on the 

 flasrellum and at the inner maro;-in of the merus. 



The chelipeds are slightly unequal (the left being the larger), and bulky, owing to the 

 size of the chela, that alone in the left cheliped exceeds the length of the carapace, but the 

 meropodite is very short, scarcely projecting beyond the carapace, somewat convex at its outer 

 surface, but flattened at the under and inner face, and provided with a nearly circular, small 

 tympanum, half as long as the length of the meropodite, only at the inner side; the edges 

 are crenulate, and the upper edge, which is much convex, has a small notch at its subdistal 

 end, whereas the outer border ends distally in a prominent tooth, that is itself crenulate. The 

 wrist is short, unarmed, only crenulate along the inner margin, the under surface presents a 

 tuft of hairs near the proximal end of the inner margin and another larger one near the 

 articulation with the palm ; the convex upper surface is provided with scale-like rugosities. The 

 palm (fig. I a) is much inflated, about as high as long, and longer than the fingers; the under border 

 is somewhat convex, curving upward towards the tip of the fixed finger, compressed and crenulate 

 in the middle of its course; the upper border is rounded in its distal portion, but carinate 

 near the carpal articulation ; the whole inner surface of the palm is covered with squamiform 

 structures, similar to those on the wrist ; along the uj^per margin the outer surface is very 

 finely granular and the rest of this surface is characteristically sculptured and divided into two 



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