142 RHYNCHOPHORA. 
3. Bradyrhynchus rugicollis, sp. n. 
Brevis, convexus, niger, griseo-squamosus, antennarum scapo rufo; rostro brevissimo, fronte transversim 
depressa ; prothorace rugoso-punctato. 
Long. 6 millim, 
Hab. Mexico, Guanajuato (Sadlé). 
Head and rostrum separated by a broad vague depression ; front of the latter without 
distinct impressions, even the lateral depressions vague ; club of antenna elongate oval, 
acute. Thorax rugose-punctate, but the sculpture concealed by much squamosity. 
Elytra with series of not very large, distant punctures. 
We have received only one badly-preserved specimen of this species. Although 
closely allied to B. hrevirostris, it may be easily distinguished by the transverse depres- 
sion across the front of the head. 
SCIORHINUS, gen. nov. 
Rostrum latum, brevissimum, pterygiis superne omnino occultis. Oculi perconvexi. 
Rostrum as broad as long, separated from the head by a broad depression between 
the eyes; the front of the rostrum has a greater extension laterally than the pterygia, 
so that these are not at all visible from the front; eyes extremely convex; scrobes 
deep, lateral, strongly arcuate, so that their rather slender terminal part is directed 
downwards ; scape short, smooth, and slender, except at the apex, which is much swollen. 
Mentum rather large, filling the buccal cavity and quite concealing the palpi. Mandibles 
very stout, the scars thick and prominent. Prosternum very much shorter than the 
pronotum. Metasternum extremely short. Corbels of hind tibie rather small, furnished 
with two very distinct series of apical cilie, separated by a slender glabrous space. 
Second ventral segment quite short. 
The broad flat face of the rostrum, quite concealing the pterygia from the front, 
separates the single species for which this genus is formed from Epicwrus and Brady- 
rhynchus. ‘The insect has somewhat the facies of the genus Strophosomus of the 
European fauna. 
1. Sciorhinus pictus, sp.n. (Tab. VI. fig. 8.) 
Dense squamosus, hispidus, antennis tarsisque rufis; elytris brevibus, convexis, albido-variegatis. 
Long. 4-5 millim. 
Hab. Mexico, Chilpancingo 4600 feet, Amula 6000 feet, both in Guerrero (H. H. 
Smith). 
Short and convex, densely covered with variegate scales, and bearing numerous fine 
erect sete, Rostrum very short and broad, broader in front, unimpressed ; seen quite 
from the front, nearly the whole of its anterior part seems to form a deplanate process, 
that is somewhat acuminate above, and is less densely squamose than the rest of the 
