254 Mr. R. I. Pocock on the Genera and 
being of considerable size; lower jaw slightly exceeding the 
upper, armed with three more or less fused teeth ; a radiating 
tuft of spiniform sete at the base of the flagellum ; flagellum 
long, slender, but with its edges tightly folded over, lying 
close to the upper surface of the mandible, and extending 
back almost to its base; its basal portion much enlarged, 
somewhat as in Solpuga, but lying backwards, not forwards ; 
stridulating-ridges very small. 
Fig. 1. Inner surface of mandible of Ceroma Johnstonii, sp. n. 
Fig. 1a. Side view of rostrum of Ceroma Johnstonit, sp. n. 
Fig. 2. Flagellum and upper fang of mandible of Zeriassa bicolor, Poe. 
Fig. 2a, Side view of rostrum of Zeriassa bicolor, Poe. 
Fig. 3. Flagellum and upper fang of mandible of Blossia rufescens, sp. n. 
Fig. 3a. Side view of rostrum of Blossia rufescens, sp. n. 
Rostrum as in figure, the upper process surpassing the 
lower and longer than it, deflexed apically; the lower also 
somewhat strongly deflexed. 
Palpi and legs mostly not spiny, covered with short hairs 
and long sete; tarsus and protarsus of palp truncate and 
incrassate, the two almost indistinguishably fused; legs of 
first pair rather robust, armed with two very distinct claws ; 
tibia of second and third pair with one distal superior spine, 
protarsus with three superior spines; distal tarsal segment 
