HYPNOIDUS. 409 



long, the joints longer than broad. Prothorax as long as broad, very convex, subparallel behind, 

 areuately narrowing from the middle forwards ; the apex broadly and arcuately produced in the middle, 

 projecting over the basal portion of the head ; the anterior angles strongly and acutely produced in front • 

 the hind angles acute, not divergent, sharply unicarinate, the carina almost straight and extending 

 forwards to beyond the middle; the surface closely, very finely punctate, and sparsely, finely granulate 

 on the declivous lateral portions and at the base, very coarsely and closely granulate along the middle of 

 the disc, the coarsely granulate space widening anteriorly. Elytra about twice the length of the prothorax, 

 and wider than it at the base, arcuately narrowing from the basal third, the humeri obtuse ; deeply striate, 

 the strise without distinct punctures, the interstices convex, and closely, very finely punctate. Beneath 

 closely and finely, the prosternum more sparsely, punctate, the latter granulate in front and with a short 

 obtuse lobe ; prosternal sutures curved, and slightly converging posteriorly, the prosternum disconnected 

 from the propleura? for the greater part of its length. 

 Length 3-3f, breadth 1§— 1| millim. 



Hab. Nokth Ameeica, Utah and Texas l . — Guatemala, San Geronimo in Vera Paz, 

 and Rio Naranjo [Champion). 



Nine specimens, one of which has been examined by Dr. Horn *. In the vestiture 

 of the upper surface and the form and sculpture of the thorax this and the following 

 species resemble the South-American Monadicus mobiliceps and M. bilcesus, Cand. 

 The longer semierect hairs are only visible in fresh specimens. The pubescence 

 appears whiter when the insect is viewed in a particular light ; the silvery patch near 

 the hind angles of the thorax is conspicuous. The coarsely granulate space on the 

 disc of the thorax is elongate-triangular in shape and somewhat sharply defined, the 

 sculpture on the rest of the surface being very much finer. 



There is no trace in any of the specimens of a closely punctured space on the second 

 ventral segment, a distinctive mark of the males of the allied H. canescens. The 

 prosternum in both species is freely movable in front, it being disconnected from the 

 propleurse anteriorly. 



2. Hypnoidus canescens. 



Oblong-oval, rather broad, moderately convex, opaque, the elytra slightly shining ; black, the elytra with a 

 brassy lustre, the basal three joints of the antennae, partly or entirely, and the legs flavo-testaceous ; the 

 head and a large patch on either side of the base of the prothorax thickly clothed with whitish or silvery 

 pubescence, the rest of the prothorax sparsely, and the elytra and under surface thickly, clothed with a 

 short, fine, yellowish- or fulvo-cinereous pubescence, which in some specimens becomes whitish towards the 

 sides of the elytra. Head broad and flattened, densely, very finely punctate, the eyes small; antennae 

 slender, feebly serrate, moderately long. Prothorax as long as broad, very convex, arcuately narrowing 

 from the middle forwards, the sides feebly sinuate behind ; the apex arcuately produced in the middle, pro- 

 jecting over the basal portion of the head : the anterior angles acutely produced in front ; the hind angles 

 acute, feebly divergent, and unicarinate, the carina almost straight and extending forwards to beyond the 

 middle ; the surface closely, very finely punctate on the declivous lateral portions and at the base, finely 

 granulate on the middle of the disc. Elytra scarcely twice the length of the prothorax, and of the same 



* There is a specimen of this insect in the British Museum labelled " Cryptohypnus indicus, Motsch., 

 E. Ind., ex Jekel." C. indicus was described by Motschulsky in 1858, in the seventh volume of his ' Etudes,' 

 p. 57, from Burma : to judge from his diagnosis, it is very doubtful if the American insect belongs to the 

 same species. 



biol. centr.-amee., Coleopt., Vol. III. Pt. 1, December 1895. 3 Gr 



