ISO STALK-EYED CRUSTACEA 



marked ; there is only the point of the mesogastric lobe 

 which is prolonged in a small median groove ; the 

 branchio-cardiac and the cardio-gastric grooves form an 

 H. Very fine granulations ornament the circumference 

 of the carapace ; in the centre the granulations are almost 

 completely effaced. The front is sloped and formed of 

 two lobes separated in the middle line by a narrow notch ; 

 these lobes are more advanced outside than inside. The 

 superior orbital border is divided 'by two faintly marked 

 fissures. The antero-lateral edges are very short and 

 scarcely exceed the level of the middle of the gastric 

 region. The first lobe, formed by the union of the 

 orbital angle with the first tooth, terminates in a straight 

 edge ; the two teeth which follow are a little sharp, the 

 last is strong and pointed. The border of these teeth 

 have a granular line which is prolonged backwards 

 upon the border of the branchial region ; these are 

 very swollen. The latero-inferior regions are granular, 

 and there is a small subhepatic tubercle below the 

 first lateral lobe. The external orbital hiatus is widely 

 open ; the inferior orbital border is advanced below 

 the cornea in the form of a small rounded lobe, dis- 

 tinctly separated from the internal orbital angle, which 

 is dentiform. 



The basal antennal joint is very short and wide ; it 

 joins the front at its antero-internal angle. The internal 

 antenn;e are long, and they are folded almost transversely 

 in the orbits. The buccal cavity is strongly notched on 

 each side, and is prolonged in the middle line in a kind 

 of beak. The external maxillipedes are wide and short. 

 The fourth joint is truncated in front and on the inside 

 for the insertion of the fifth joint ; its antero-internal angle 

 is rounded. The legs of the first pair are of unequal size. 

 The fourth joint is hid under the carapace ; it has some 



