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. 
Sternites 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, the spaces 
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. 
Palpi \arge ; humerus granular throughout, the 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. 
