CARCINOLOGfCAL STUDIES. 57 



first and obtusely rouuded anteriorly. The secoud antero- 

 lateral lobe of Heterop. indica on the contrary is a little 

 narrower than the first. The two posterior teeth are much 

 smaller, triangular, tooth-like and subacute ; the third tooth 

 is a little larger than the fourth. 



The anterior half of the upper surface of the cephalo- 

 thorax presents the same transverse , minutely granulated, 

 pubescent lines as that of Heterop. indica. Immediately 

 below the first antero-lateral lobe, the subhepatic region 

 presents some more or less prominent granules ; Kinahan 

 describes them in the adult as »a small spine", Haswell 

 as a » tubercular eminence." The flagellum of the outer 

 antennae is longer than that of Heterop. indica and but 

 little shorter than half the breadth of the cephalothorax. 

 The abdomen does not fully agree with Kinahan's figure, 

 the joints appear comparatively a little broader; the penul- 

 timate joint is distinctly broader than long, that oï Heterop. 

 indica nearly quadrate. 



The left chelipede is the larger one. The upper margin 

 of the arm has an acute tooth immediately before the 

 distal end. The wrist presents an acute tooth at its internal 

 angle and the upper surface is somewhat granular. The 

 larger hand (fig. 2) is a little more than once and a 

 half as long as high , and the horizontal length of the 

 fingers is but little more than half the horizontal length 

 of the palm. The hand is minutely granulate on its upper 

 margin and close to the articulation with the wrist , though 

 in our young specimen the granules are only visible by 

 means of the magnifying glass. The outer surface of the 

 hand appears smooth for the naked eye, and very minutely 

 granular under a strong lens. The dactylus is short, curved 

 and somewhat granular at the base; this finger is not 

 grooved , but presents two or three rows of impressed points. 

 The immobile finger is distinctly sulcate on its outer surface, 

 and armed with two or three teeth; the dactylus presents 

 also three teeth , of which the two proximal ones are smaller 

 than the opposite teeth of the index. The lower margin of 



Notes from the Leyden IMuseum , Vol. XH. 



