CARCINOLOGICAL STUDIES. 109 



This species is at first sight distinguished by its colo- 

 ration. Our specimens do not fully agree with the figures 

 of this species , published by Dana (PI. XXVIII, fig. 10). 

 Firstly the eye-peduncles are comparatively a little longer 

 in our specimens, secondly the basal scales of the outer 

 antennae are spinose not only at the internal , but also 

 at their external margin , and the legs of the second and 

 of the third pair, finally, present a somewhat less slen- 

 der form. 



I may add the following about our specimens. The cepha- 

 lothorax is moderately convex and smooth ; a few small 

 tufts of hair exist on the anterior part in front of the 

 cervical suture , which is distinctly longer than broad ; these 

 tufts are implanted near the lateral margins , and a few 

 occur also on the posterior membranaceous part immediately 

 behind the cervical suture. The anterior margin of the 

 cephalothorax has been exactly figured by Dana (PI. XXVIII, 

 fig. 10b). The V-shaped groove is distinct and the upper 

 surface of the cephalothorax is punctate. The eye-peduncles 

 are much longer than the anterior margin of the cepha- 

 lothorax, viz. about once and a half as long; the ophthalmic 

 scales terminate in a small spinule and are small and 

 triangular. The peduncles of the external antennae project 

 a little beyond the middle of the eye-peduncles. The basal 

 joint presents a minute spinule at the distal end of the 

 inner margin and two others on that of the outer one ; the 

 antennal scale is short , spiniform and hairy, it projects but 

 little beyond the distal end of the penultimate joint of 

 the antennal peduncle , and is armed on each side with 

 two or three sharp spinules. The penultimate joint of the 

 antennal peduncle presents a sharp spinule anteriorly as 

 well as posteriorly at the distal end, and the flagella are 

 glabrous. 



much longer than the breadth of the anterior margin of the cephalothorax, 

 because they have comparatively the same length in Calcinus elegans. This is 

 at first sight obvious when looking at the figures of the two species, published 

 by the french author. 



Notes from the Leyden JMuseum, Vol. XII. 



