410 Mr. C. O. Waterhouse on new Genera 
acute at the apex. Maxille short, the internal lobe termi- 
nating in a sharp point; the external lobe produced beyond 
the internal lobe, truncate at the apex. The palpi rather 
large; the basal joint small, elongate, bent in the middle ; the 
second joint larger and about twice the length, truncate at 
the apex; the third joint rather shorter; the fourth rather 
longer than the two preceding joints taken together, fusiform 
with the apex slightly truncate. Antenne with the first 
joint inflated, second joint a little longer than broad, the third, 
fourth, and fifth a little shorter, the sixth as long as the second 
joint; the seventh to tenth forming a long club, theseventh joint 
shining. Metasternum rather long; abdomen short ; the pygi- 
dium large and triangular, the apex reaching in repose to 
the base of the femora. Anterior coxe very large. Anterior 
tibie rather short, with two strong teeth on the outer edge ; 
tarsi rather longer than the tibiz ; the inner claw bent at right 
angles near the base, which is furnished with a small tooth ; 
the other claw, as well as the claws to all the other tarsi, 
quite simple, rather slender. Tarsi to the four posterior 
legs very long and slender, with strong bristles at the apex 
of the joints, the posterior pair nearly three times as long as 
the tibia. 
I am not satisfied as to the position of this genus. It 
has somewhat the form of Pachycolus; and I therefore place it 
temporarily next to the genus Trichinopus above described. 
Perissosoma cenescens, Sp. NOV. 
P. oblongo-ovata, leviter convexa, enescens, nitida; capite sat lato, 
fronte discrete subtiliter punctulata, antice impressa; clypeo 
transverso, antice leviter rotundato, crebre distincte punctato ; 
thorace capite 4 latiore, longitudine 2 latiore, leviter convexo, 
discrete subtiliter punctulato, antice leviter emarginato, lateribus 
leviter rotundatis (medio fere angulatis) tenuiter marginatis, basi 
utrinque levissime sinuata ; scutello triangulari, punctulato ; elytris 
thorace paulo latioribus, medio paulo ampliatis, ad apicem obtusis, 
irregulariter striato-punctatis, interstitiis distincte discrete punc- 
tatis ; sutura elevata, picea; corpore subtus piceo ; pedibus longis, 
piceo-seneis, femoribus piceis. Long. 4? lin., lat. 2} lin. 
The elytra are rather more distinctly punctured than the 
thorax, and the strie are only traced near the suture and at 
the sides. 
Hab. Seychelle Islands. B.M. 
