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the interspaces between the rostrum and the supraorbital spines show nearly the reverse shape 

 of these spines, which are hardly longer than broad at their base, convex above, and resembling 

 those of Syu. neomeris. 



Second article of the rather slender, antennular peduncle one and a half as long as 

 broad at the distal end, measuring two-thirds the length of the visible part of the first 

 article, third article a little shorter than second ; stylocerite as long as basal article, not reachino- 

 beyond it. 



Lower spine of basicerite a little shorter than the stylocerite, with the tip slightly turned 

 outward ; upper spine half as long as the lower, directed obliquely upward ; the carpocerite, that 

 is 3, /-times as long as thick, surpasses the antennular peduncle by one-third of the third article. 

 The lateral spine of the scaphocerite, the outer margin of which is straight, is a little shorter 

 than the antennular peduncle; this spine is not curved inward and surpasses the rather narrow 

 blade by one-fifth of its length and the blade reaches the middle of third antennular article. 



In Syn. neomeris the carpocerite is longer, the stylocerite reaches to the middle of second 

 antennular article, the lower spine of the basicerite is but a little shorter than the stylocerite 

 and the upper spine measures only one-third of the lower. 



Telson much shorter with regard to its width than that of Syii. neomeris, the pro- 

 portion between its length and the width of the posterior margin being 2,35 ; posterior margin 

 moderately prominent, the outer angles spiniform, though short, reaching only the middle of 

 the short spinules near them ; proportion between the greatest width and that of the posterior 

 margin 1,77. The spinules of the upper surface which are 0,17 mm. long and situated not far 

 from the lateral margins, are inserted far backward and the two pairs are as much 

 approximate as in Syn. neomeris. The proportion between the distance of the anterior pair 

 from the posterior margin and the length of the telson is namely 3 and the proportion between 

 the distances of both pairs from the posterior margin is 1,47. (Confer in the Table A of Sy}i. 

 neomeris N" 5 and N" 6, p. 215). 



Brachium of large cheliped 2,3-times as long as broad, presenting a less stout shape 

 than in Syn. neomeris, upper margin obtuse at apex; lower angle of the carpus produced into 

 a long, spiniform tooth, chela nearly as in Syn. neomeris, anterior margin of the palm with a 

 short, acute tooth which is curved downward. Brachium of small cheliped resembling that of the 

 large. The small chela resembles that of Syn. jedaneiisis : proportion between its length and 

 height 2,7, proportion between the total length of the chela and that of the fingers 2,336 and 

 proportion between the length and the height of the palm 1,54. The small chela oi Syn. neomeris 

 has a more slender form and the fino-ers are 1 o n e e r. « 



Second legs as in Syn. neomeris. Merus slender, 7,1 -times as long as thick, first segment 

 of the carpus 6-times as long as thick, slightly longer than the sum of the following. 



The proportions of the third pair of feet are: merus 2,72; carpus i; propodus 2,1. 

 The merus, 3,78-times as long as wide, is armed, near the distal third of the posterior margin, 

 with one single small spinule, 0,14 mm. long, of a rather stout form; carpus 1,96-times, 

 propodus just 5-times as long as wide. While in Syn. jedanensis the propodus of the third legs 

 carries eight spinules, one observes only four spinules, long 0,16 — 0,2 mm. in this new species, 



93 



