9° 



CRUSTACEA MALACOSTRACA. II. 



than, the two following segments combined, considerably longer than broad, anteriorly a little more 

 than half as broad as behind the middle, with the frontal process small and the posterior two-thirds 

 of the lateral margins rather convex. 



Antennnlse (fig. 7 b) considerably shorter than the carapace, moderately slender; first joint 

 somewhat shorter than the three other joints combined, a little more than twice as long as deep, 

 with the proximal third somewhat thickened downwards; second joint distinctly more than half as long 

 as the first, not much produced above and about twice as long as deep; third joint as long above as 

 below and slightly more than half as long as the second; fourth joint a little shorter than second, 

 somewhat shorter than a couple of the terminal setse. — Antennae with fourth and fifth joints com- 

 pletely fused, together about three times as long as sixth joint. 



Chelipeds (fig. 7 b) moderately strong. The basal joint considerably shorter than the carpus; 

 its posterior process deeper than long, and its free hind margin reaches almost or fully to the anterior 

 lower end of the second segment. Carpus somewhat long, about twice as long as deep, with the 

 lower margin somewhat convex. Chela slightly or somewhat longer than the carpus, somewhat more 

 than two and a half times as long as broad; no protruding angle above the movable finger, which is 

 slightly shorter than the anterior margin of the hand and moderately broad; fixed finger with a tooth 

 near the end. 



Thoracic segments, seen from above (fig. 7 a) somewhat peculiar. Second segment short, very 

 much shorter than the third and decreasing much in breadth backwards. Third to sixth segments each 

 with the antero-lateral angles somewhat protruding and rounded, the lateral margins with the anterior 

 half distinctly concave, at or behind the middle a little protruding and then converging much to the 

 front margin of the next segment; seventh segment in the main of the same shape, but the convex 

 part of the lateral margin is situated more backwards and is more protruding. Anterior ventral part 

 of second segment produced in a conical, oblique process directed forwards and downwards, generally 

 large and acute (as in the subadult male, fig - . 7 i). but in a couple of females (one of which with 

 marsupium) the process is smaller with the end obtuse (fig. 7 b). ■ — Thoracic legs somewhat slender 

 and long. Second and third pairs with rather long or long distal spines on fourth and fifth joint 

 (figs. 7b, 7e and 7I1); sixth joint varies in length, being from a little shorter (fig. 7h) to somewhat or 

 considerably longer than fifth joint (figs. 7b and 7e), but it is always somewhat shorter than seventh 

 joint with claw. Three posterior pairs (fig. 7 f ) with the spines on fifth and sixth joint long and sixth 

 joint shorter than seventh with claw. 



Abdomen as long as the two preceding segments combined. Five anterior segments with 

 their lower margin rather convex (fig. 7g); pleopods entirely wanting. Sixth segment not quite as 

 long as the three preceding segments combined, seen from above (fig. 7 a) with the portion between 

 the uropods broadly triangular, acute. — Uropods slender and somewhat long, longer than the two 

 posterior segments combined (fig. 7g); peduncle much longer than deep, but considerably shorter than 

 the proximal joint of the endopod; endopod with second joint distinctly longer than the first; the 

 exopod thin and more than half as long as the first joint of the endopod but always somewhat 

 shorter than that joint. 



I_engt of females with or without marsupium 2 — 2.1 mm . 



