I'O CARCINOLOGICAL STUDIES. 



regions 3 R ; but it is sepai'ated from the intestinal region 

 by a transverse groove , which runs parallel with the pos- 

 terior margin of the cephalothorax and which is interrupted 

 in the middle. The hepatic region is divided into three 

 prominent lobules 1 L , 2 L and 3 L , and the three areolae 

 4 L , 5 L , 6 L are also distinctly separated from one 

 another and , at least the first, prominent. The postero-lateral 

 regions 1 R , 2 R and 3 R are equally distinct , and the 

 two latter are separated from one another by a rather 

 deep oblique groove. The lobulation of the cephalothorax 

 evidently much resembles that of Etisodes Electra. The 

 lobules are irregularly punctate, and the anterior ones appear 

 slightly granulated on their most prominent portions , only 

 visible, however, under a lens of sufficient power. The distance 

 between the external orbital angles is slightly more than 

 half as broad as the greatest width of the cephalothorax. 

 The front does not project so much forward as in Etis. 

 Electra and is , somewhat obliquely , directed downwards. 

 It presents two arcuate and granulated internal 

 lobes, which are separated from one another by a small 

 triangular incision; these lobes are separated by a 

 slight emargination from the less prominent external 

 lobes, which are much smaller, obtuse and denti- 

 form. The frontal lobes are ornamented on their upper 

 surface with a transverse rowofobtuse granules, 

 which runs close to the anterior margin of the front , and 

 which is interrupted in the middle by the median frontal 

 furrow. The external frontal lobes are separated from the 

 obtuse internal orbital angles by a rather wide triangular 

 hiatus, in which the external antennae are placed. The 

 orbits are scarcely broader than long. The upper margin 

 presents externally two triangular incisions , the external 

 angle is obtusely dentiform , and separated from the lower 

 margin by a triangular hiatus; the latter is finely granu- 

 lated like the upper margin and terminates at its internal 

 angle into a prominent dentiform lobe. 



The antero-lateral margins are a little longer than the 



Notes from the LiCyden IMusoum, Vol. XIII. 



