RHYNCHOPHORA: OTIORHYNCHINE. 319 
One worn example, probably a male. Very like 0. dituberosus, but with a short 
neck-like constriction to the elytra at the base (somewhat as in Kupagoderes constrictus), 
the frons and rostrum deeply trisulcate, and the inter-ocular portion of the head 
flattened. ‘The sides of the prothorax are explanate and strongly bilobate. Fresh 
specimens would doubtless be more definitely albo-squamose. 
4 (z). Ophryastes collaris, sp.n. (Tab. XV. figg. 2, 2, ¢; 3,34, 2.) 
Moderately elongate, black; densely clothed with chalky-white or pale brownish scales, the head with a small 
patch on each side above the eyes, the prothorax with three spots at the apex, and the elytra with 
various irregular scattered patches, infuscate, the intermediate and posterior femora also fusco-annulate 
in front; the surface also set with minute, short, scattered hairs. Rostrum very broad, without definite 
transverse depression at the base, deeply trisulcate, the lateral grooves converging posteriorly, the 
flattened inter-ocular portion of the head also shallowly trisulcate. Prothorax strongly transverse, 
laterally bilobato-dilatate (the posterior lobe prominent and the prothorax here nearly or quite as wide 
as the elytra), constricted just before the base, the groove in front of the basal ridge deeply impressed 
laterally and obsolete in the middle, the depressed narrow basal portion angularly produced backwards 
in the middle; the surface uneven, sparsely, coarsely punctate. Elytra convex, oblong-oval, with a short 
neck-like constriction at the base; coarsely punctate-striate, the interstices convex. 
Length 9-124, breadth 33-5} millim, 
Hab. Norta America, Texas (coll. Fry).— Mexico, Nuevo Laredo in Tamaulipas 
(Ilége). 
Two specimens, assumed to be male and female, the Texan example (2) being 
much broader than the other. Near 0. tetralobus, but with the median groove of the 
rostrum obsoletely extending on to the inter-ocular portion of the head, the latero- 
anterior lobe of the prothorax less prominent, and the depressed basal portion of the 
prothorax more produced in the middle behind. The neck-like constriction to the base 
of the elytra separates O. collaris from O. tuberosus, bituberosus, and basalis, the last- 
mentioned insect, moreover, having the median sulcus of the rostrum extending 
upwards. ‘The dark markings may be partly due to abrasion or discoloration. Both 
examples are figured. 
TOSASTES (p. 91). 
Mr. Pierce [Proc. U.S. Nat. Mus. xxxviil. pp. 344, 345 (1909)] has recently added 
two species to this genus, from ‘l'exas and New Mexico respectively, and another from 
Coahuila has recently been sent us by the U.S. Nat. Mus., to whom we are also 
indebted for co-types of the N.-American forms. 
1 (a). Tosastes coarctatus, sp.n. (Tab. XV. figg. 4, 4a, 2.) 
Oblong-ovate (3), subovate (@ ), black, densely clothed with small, imbricate, chalky-white scales, and also 
set with very short, curled, decumbent, scattered, setiform hairs. Rostrum very stout, transversely 
depressed at the base (arcuate above, as seen in profile), trisulcate, the sulci separated by two posteriorly 
converging ridges. Prothorax strongly transverse, uneven, sparsely, coarsely punctate; the sides dilated 
at about the middle, crenate, and deeply, abruptly constricted just before the base; the ocular lobes 
prominent, the vibrisse short. Elytra oval, broader and less constricted at the base in the @ than in 
the g, with laterally prominent dentiform humeri; punctate-striate, the interstices feebly convex, 
