OBTAINED IN EGYPT AND THE SOTJDAN. 313 



in the front lialf of each, but rather coarse in the posterior half ; 

 the median crest small, extending from the 2nd to the 6th. 

 Sterna smooth ; the last at most finely shagreened, with the 

 4 keels very weak. 



Tail about 5| times the length of the carapace, gradually 

 expanding to the middle of the 4th segment ; the upper surface 

 of the segments 1 and 2 hollowed and mesially grooved ; upper 

 surface of segments 3-5 smooth, polished ; segments 1-3 with 

 10 keels, all of which are coarsely granular, except the two inferior 

 keels on the 1st, the same two keels on the 2nd and 3rd com- 

 posed posteriorly of dentiform tubercles ; the inferior lateral 

 keels on segments 1-3 strongly converging behind ; the superior 

 keels on segments 1-4 evenly granular ; the lateral and inferior 

 intercarinal spaces granular, except those on the lower surface 

 of the 1st, the granulation becoming thicker on the posterior 

 segments ; on segment 4 the lower surface is completely and 

 closely granular, the two inferior keels obsolete, visible only in 

 the anterior third of the segmeut ; the 5th segment completely 

 granular at the sides and below, the superior keels without any 

 enlarged granules or tubercles, and with scarcely a trace of 

 any enlarged serially arranged granules on the lower surface 

 between the median and the lateral keels ; the granules on the 

 lateral keels becoming tubercular behind, the 3rd from the end 

 abruptly enlarged and quadrate ; the lobe on each side of the 

 anus large and squared, and not secondarily lobate. 1st segment 

 wider than long*, 2nd as long as wide, 3rd a little longer than 

 wide, 4th and 5th longer than wide ; length of 3rd a shade less 

 than width of the 4th, the height of the 4th equal to the length 

 of the 1st, the height of the 3rd and 2nd only a little less, height 

 of the 4th about | the length of the 5th. 



Vesicle coarsely granular below, considerably wider than high. 



Palpi short ; humerus granular and crested above ; brachiuni 

 smooth and punctured behind, coriaceous above, granular in 

 front ; manus entirely smooth and punctured, narrower than the 

 brachium ; the length of the hand-back about half the length of 

 the movable digit, and about 5 longer than the width of the 

 hand; digits short, not lobate, only slightly curved, with 10 

 median rows of teeth, and 11 teeth forming the inner series. 



Legs with femora and patellae of 3rd and 4th granular, for the 

 rest smooth, 



* Length is taken laterally from the posterior border to the large tubercle 

 which marks the point of origin of the two upper keels. 



