A new species of small size of the Paulsoni group, related to Syn. hululensis Cout. 



The ova-bearing specimen possesses all its legs and will therefore be described as the 

 type, the other has lost the large cheliped. 



Rostrum slender, 8 or 9-times as long as wide in the middle and reaching to the 

 2^^ third part of median antennular article; the rostrum which distinctly widens at its base, the 

 width being here about one-third the length, is directed a little obliquely downward, while 

 the lateral spines project horizontally forward. Lateral spines also slender, acuminate like the 

 rostrum, but notably, viz. two-fifths, shorter, extending to the distal third of the visible 

 part of basal article ; the tips of the lateral spines are turned inward, their outer margin is 

 concave at the base, while the notches by which they are separated from the rostrum, resemble 

 those of Syn. hululensis, the anterior wall of the frontal region being visible from above. 



Antennular peduncle 4-times as long as wide at the distal extremity of the second article ; 

 the relative proportions of the visible part of the first article and of the two following are as 

 8:5:5, the basal article being a little more than one and a half as long as the second, the 

 second just as long as the third and slightly longer than thick distally. Stylocerite acuminate, 

 extending to the distal 4^'' part of median article. 



Lateral spine of basicerite ^ather stout, much shorter than the stylocerite, but exactly as 

 long as the outer margin of the basal portion and reaching as far forward as the first anten- 

 nular article; upper angle subacute, but not spiniform. Carpocerite 3,75-times — in the other 

 specimen 3,8-times — longer than wide, surpassing the antennular peduncle only by one-fifth 

 or one-sixth of the third article, — in the other specimen a little more ; the terminal spine of 

 the scaphocerite is slightly curved inward, distinctly exceeds the carpocerite and surpasses by 

 one-third of its length the tip of the scale, that reaches a little beyond the middle of third 

 antennular article. 



Telson 3-times — in the other specimen 2,34-times — as long as the posterior margin 

 is wide, greatest width twice as broad as the latter. The spinules of the upper surface are 

 small, those of the anterior pair 0,13 mm. long, those of the posterior 0,15 mm. and situated 

 near the lateral margins ; the proportion between the length of the telson and the distance of 

 the anterior pair from the posterior margin is 1,82, the proportion between the distances of 

 both pairs from the posterior margin 1,6, while these numbers are, in the other specimen, 

 respectively 1,77 and 1,67. Postero-lateral angles acute, like in Syn. Juihdensis, not spiniform, 

 very short; median part of the posterior margin more prominent than in this species, 

 almost semicircular. In both specimens the spinules of the posterior margin are lost. 

 Merus of larger cheliped 2,1-times, that of the smaller 2,76-times as long as wide, in both meri 

 the upper margin terminates in a small spiniform tooth at the apex ; the merus of the larger 

 cheliped is 1,1 4-times as long as the other. Relative dimensions of the larger chela: fingers i; 

 total length 3,87; height 1,35, this chela being 2,87-times as long as high. The anterior margin 

 terminates in a small, rather obtuse tubercle, which does even not exist in the smaller chela, 

 the relative dimensions of which are: fingers i; total length 3,25; height i, the tapering fingers 

 being shorter than in Syn. hnhi/ensis. Larger chela 2, 4-times as long as the other, in Syn. 

 Jnilulensis 3-times. 



138 



