300 Capt. T. Broun on new 
equal, seventh about twice the size of the sixth. Club rather 
long, widest near the end, indistinctly jointed, its basal 
portion hardly as broad as the seventh joint. yes nearly 
round, placed close to the thorax. Head short, narrow above, 
globose below. Thorax bisinuate and sharply limited at the 
base, without ocular lobes, usually oviform.  Scuéellum 
absent. ytra of the same width as the thorax at the base, 
shoulders not porrect, with a sharp slender basal margin. 
Tarst short, finely setose underneath ; their third joint entire 
below, not broadly excavate above, rather narrow. 
Prosternum moderately long, slightly incurved at apex. 
Anterior coxe prominent and contiguous, placed just behind 
the middle of the prosternum. JMJetasternum short; hind 
cox widely distant. Abdomen long, its first segment 
evidently shorter than the second, the intervening suture very 
oblique towards the sides. 
The form, the position of the eyes, the rostrum, antennal 
insertion, the gradual slope of the posterior declivity, and 
other characters prove that this genus is not very close to 
Phrynixus or its immediate allies. Chamepsephis may be 
separated by its large broad head, which is not globose 
below, by its more prominent and widely separated middle 
cox, and by the position of the eyes; these are distant from 
the thorax and from each other, but in Araoscapus they are 
more approximated. 
In addition to the species described below this genus will 
include Nos. 2552, 2553, and 2554, which were placed 
fae in Chamepsephis until more specimens could be 
found. 
Arcoscapus Ovipennis, Sp. Nh. 
Elongate, subovate, slightly convex; fuscous, thorax a 
little rnfescent, rostrum, antenna, and tarsi red, femora obscure 
testaceous ; sparingly clothed with minute yellowish scales 
and patches of short, erect, coarse, pale sete. 
Rostrum rather longer than the thorax, finely punctured in 
front, indistinctly carinate behind; it is subparallel, but 
minutely swollen where the antenne are inserted. Club 
densely and finely pubescent. Thorax slightly longer than 
broad, oviform, but little wider before the middle than it is 
elsewhere ; its punctuation rather shallow, somewhat rugose, 
indistinct in front; there is a longitudinal bat not deep 
depression at the middle of the base. /ytra oval, not broad, 
considerably narrowed behind, their posterior portion forms a 
gradual slope; the sutural region is a little depressed near 
the base, there are two series of moderately large but not deep 
