306 RHYNCHOPHORA. 
outer half, strongly sinuate within, the intermediate and posterior pairs sharply angulate externally and 
ciliate thence to the apex. 
Length 4, breadth 23 millim. (2.) 
Hab. Nortu America, Texas !.—Mexico, Matamoros Izucar in Puebla (Hége). 
One specimen. In the widely separated eyes this species approaches &. nigerrimus, 
but in general facies it is extremely like A. pruinosus, differing from the latter in the 
form of the tibie, tarsi, and rostrum. The deeply punctato-sulcate elytra, with convex, 
closely punctate interstices, readily distinguish 2. ovalis from the other Central- 
American forms. Mr. Wickham has sent us two examples of it from Uvalde, Texas. 
21. Rhyssomatus subrufus, sp.n. (Tab. XVII. fig. 26, ¢ , head and rostrum.) 
Oval, shining, piceous, rufo-piceous, or ferruginous, very sparsely pubescent, the pubescence somewhat clustered 
into fascicles on the elytra. Head finely punctate, the eyes well-separated ; rostrum (¢ ) rather slender, 
curved, depressed at the base above, longer than the head and prothorax, very sparsely, finely punctate, 
and longitudinally strigose towards the base, ( Q ) a little longer and more slender, almost smooth from 
the base, the antennez inserted far behind the middle in the 2, and at the middle in the g. Prothorax 
transverse, subconical, strongly constricted in front; closely punctate, except along a narrow smooth 
space down the middle, the interspaces on the flanks obliquely raised. LElytra oval, at the base forming 
an almost continuous outline with the prothorax ; seriato-foveolate, the punctures placed in deep grooves 
at the sides and beyond the middle, the interstices rugulose and rather convex, the outer ones, and 3 
and 5 from the middle to the apex, costate. Fifth ventral segment deeply foveate in the ¢, and shallowly 
so inthe 9. Legs short; tibiae with the apical claw very long, the intermediate and hind pairs feebly 
angulate externally and ciliate thence to the apex. 
Length 6-7, breadth 34-32 millim. (d¢ 2.) 
Hab. Muxico, Toxpam, Chiapas (Sad/é). 
Four specimens. The following is a very nearly allied form. 
22. Rhyssomatus pruinosus. (Tab. XVII. fig. 27, 3, head and rostrum.) 
Chalcodermus pruinosus, Boh. in Schonh. Gen. Cure. viii. 2, p. 18"; Horn, Proc. Am. Phil. Soc. 
xi. p. 466°. 
Rhyssematus pruinosus, Lec. Proc. Am. Phil. Soc. xv. p. 236°. 
Ryssematus pruinosus, Casey, Aun. N. York Acad. Sci. vi. p. 443°. 
Oval, shining, rufo-piceous, the rostrum and antenne ferruginous, almost glabrous. Head closely punctate, 
the eyes narrowly separated; rostrum slender, strongly curved, depressed at the base above (so as to 
appear inserted lower down than usual), ahout as long as the head and prothorax, very finely seriate- 
punctate in the ¢, smooth in the 2, the antenne inserted at about the middle. Prothorax strongly trans- 
verse, rounded at the sides, narrowing from the base, constricted in front; closely, rather coarscly punctate, 
except along a narrow, smooth, median space, the punctures towards the sides and apex confluent and 
separated by raised oblique lines. Elytra wider than the prothorax, oval; punctato-sulcate, the interstices 
rugulose and convex, becoming costate on the apical declivity. Legs short and stout; anterior tibie 
strongly sinuate, especially in the ¢, the intermediate and hind pairs sinuato-emarginate and ciliate 
externally before the apex, the hind pair angulate in the ¢; tarsi stout, the third joint broadly dilated, . 
the claws subapproximate. 
Length 4-5, breadth 2-25 millim. (¢ 9.) 
Hab. Nortu America, California! 2, Lower California’, Uvalde in Texas (Wickham). 
—Mexico, Guanajuato (Sallé: ¢ ), Temax in N. Yucatan (Gaumer: @ ). 
