90 RHYNCHOPHORA. 
4. Ophryastes bituberosus, sp. n. (Tab. IV. fig. 1.) 
Pallide griseus, fusco-submaculatus ; prothorace rugoso-sculpturato, ad latera bilobo-dilatato ; elytris confertim 
fortiter seriatim punctatis, interstitiis subconvexis. 
Long. 10-14 millim. 
Hab. Mexico, Paso del Norte ({oge). 
Rostrum without any basal depression; median groove very obsolete, not extending 
on to the head; lateral groove seen from the side quite short, and with its inner margin 
somewhat raised, seen from the front appearing elongate owing to the fusion with it of 
a slight depression near the inner margin of the eye. Thorax very broad and short, 
very coarsely rugose, the lateral expansion deeply emarginate in the middle. Scutellum 
almost entirely concealed. Elytra with deep rows of large, rather closely-placed punc- 
tures, the interstices being evidently convex; they are vaguely maculate, the suture 
remaining pallid. Hight specimens. 
This insect was pointed out to me by Dr. Horn as being possibly 0. tuberosus, Lec., 
and judging from the description it must be extremely similar to the North-American 
species; but as O. bituberosus has no basal depression on the rostrum—a character of 
great importance in Ophryastes—I think the two likely to be distinct. 
I treat as a variety two specimens from the same locality, of broader form, and not 
maculate, and with finer punctures on the elytra. 
5. Ophryastes ovipennis, sp. n. (Tab. IV. fig. 3.) 
Griseus ; prothorace brevissimo, ad latera posterius subhamato, obsolete sculpturato ; elytris convexis, humeris 
omnino rotundatis, apice subacuminato, sulcatis, sulcis fortiter punctatis. 
Long. 93 millim. 
Hab. Mexico, Paso del Norte (Hége). 
Rostrum without any trace of basal impression, with a fine deep median channel 
extending from the.tip to the upper part of the vertex, and on each side with a short 
deep lateral channel. ‘Thorax very short, the sculpture very coarse, but obsolete on 
the disc, where also there is a vague broad channel; basal band of tomentum rather 
small. Scutellum almost entirely concealed. Elytra subinflated, convex even at the 
base, with shallow broad grooves in which are placed coarse punctures. Tarsi without 
horny projections, but with semimembranous, projecting angles. 
Two examples were found of this very distinct species; the male has the elytra 
considerably less ample than the female, and the punctures are consequently more 
closely placed. 
6. Ophryastes validus. 
Ophryastes validus, Lec. Proc. Ac. Phil. vii. p. 225°. 
Hab. Mexico, near Chihuahua }. 
