324 Mr. R. I. Pocock on new Genera 



rounded lateral portions ; the ocular tubercle small and low, 

 the eyes also small and separated by a distance which is 

 nearly twice a diameter ; the distance between the posterior 

 lateral eyes subequal, the posterior eye being a little further 

 removed from the median than the latter is from the anterior. 



Tergites studded in the posterior half with low smooth 

 granules ; a prominent subgranular median keel ; the last 

 furnished with 4 granular keels. 



Sterniies smooth, somewhat coarsely punctured and im- 

 pressed, the last furnished with 4 weakly granular keels. 



Tail nearly four times the length of the carapace, which is 

 about as long as the first and second segments taken together, 

 slender, posteriorly narrowed, all the segments except the 

 first longer than wide, the fourth about twice as long as wide ; 

 the fifth segment about twice as long as the second ; the 

 normal keels well developed and coarsely granular, thes]iace3 

 between them weakly granular, the terminal granule of the 

 superior keels not enlarged ; the median lateral keel complete 

 on the first segment, just visible on the second, and extending 

 throughout the anterior half of the fifth ; the upper surface of 

 the fifth nearly flat, with squared granular keels, the lower 

 keels denticulate; the vesicle and aculeus a little longer than 

 the fifth segment ; the aculeus curved in its posterior half, 

 about half as long as the vesicle ; vesicle very large and 

 swollen, a little wider than the second segment, its height 

 equal to its width, coriaceous below. 



Paljn large ; humerus granular throughout, tlie keels sharp 

 and coarsely granular, the anterior and posterior surfaces 

 furnished with an extra abbreviated keel, which on the first is 

 composed of about six sharp tubercles : brachium also gran- 

 ular, furnished with five strong granular keels, its anterior 

 surface armed with two denticles, of which the inferior is con- 

 siderably the larger; the lower surface furnished with a 

 series of 7 setiferous pores : manus twice as wide as the 

 brachium, the length of the hand-back about equal to that of 

 the movable digit and less than that of the carapace, the 

 manus granular throughout, its upper surface flat and bor- 

 dered externally (behind) by a strong and internally by a 

 weaker granular keel, which take their origin from the 

 immovable digit, the external surface of the hand convex and 

 carinate ; keel of the hand-back strong and granular; the 

 movable digit as long as the filth segment of the tail, with a 

 large lobe in the middle of its length, the immovable corre- 

 spondingly notched. 



Legs very finely granular. 



Pectines short, furnished with 5 teeth. 



