AT4 RHYNCHOPHORA. 
and Faust, both of which I have examined. There is a specimen of it in the British 
Museum labelled as from “California,” and doing duty for Baridius californicus, 
Motsch. *. 
BRACHYBARIDIUS, gen. nov. 
Rostrum very stout, strongly arcuate, the scrobes descending towards the base and continued forwards to near 
the tip, the antenne inserted at about the basal third, the joints 2-7 of the funiculus short and closely 
articulated, the club oblong-ovate and pubescent ; eyes transverse ; prothorax with the base oblique and 
feebly sinuate on each side of the short, truncate, median lobe; scutellum rounded, free, flat, on a level 
with the surrounding surface ; elytra rounded-triangular, the sides forming an almost continuous outline 
with those of the prothorax, the apices separately rounded; pygidium exposed, declivous, convex ; 
prosternum shallowly sulcate, the basal process flattened, truncate behind, leaving the mesosternum 
narrowly exposed ; anterior cox deeply inserted, rather small, separated by about their own width; 
ventral segments 1 and 2 connate; legs very short; femora stout, compressed, shallowly sulcate, unarmed ; 
tibie flattened, uni-unguiculate; tarsal claws minute, connate at the base; body short-ovate, convex, 
compact, glabrous above. 
Type, B. immarginatus. 
The single species referred to this genus has exactly the facies of Brachybaris 
(7. ¢. it has the compact form of the N.-American Pachybaris, Lec.); but the prothorax 
is not margined at the sides, the scutellum is larger, and the rostrum, eyes, and antenn 
are differently formed. ‘The rostrum is longer, the base of the prothorax is more 
oblique on each side, and the scutellum more raised, than in the insects here placed 
under Baris. The unique type of B. immarginatus is from the Atlantic coast of 
Guatemala, and belongs to the U.S. National Museum. 
1. Brachybaridius immarginatus, sp. n. (Tab. XXII. figg. 29, 29a, ¢.) 
¢. Aineo-piceous, shining, the punctures on the under surface and legs each bearing a very minute scale. 
Head faintly punctulate ; rostrum as long as the prothorax, separated from the head by a transverse 
groove, finely punctate at the base. Prothorax strongly transverse, narrowing from the base, slightly 
constricted in front ; somewhat closely punctate. Elytra shallowly and narrowly crenate-striate, the 
interstices flat and finely, transversely wrinkled. Beneath very coarsely, the ventral segments 2-5 
sparsely and finely, punctate, the first segment hollowed in the middle. 
Length 22, breadth 12 millim. 
Hab. Guatemaa, Livingston (barber & Schwarz, in U.S. Nat. Mus.). 
One male, labelled as having been found on May 9th. 
NANOBARIS, gen. nov. 
Mandibles short, decussate ; rostrum separated from the head by a deep transverse groove, stout, moderately 
long, strongly arcuate, the antenne inserted at the middle, the antennal club stout, ovate, and densely 
pubescent, much wider than the outer joints of the 7-jointed funiculus; prothorax transverse, small, 
bisinuate at the base; scutellum free, transverse ; elytra short, very much wider than the prothorax, 
rather convex, blunt at the apex, finely striate, setose; pygidium exposed, convex, subvertical ; 
prosternum narrowly sulcate, the basal process short ; anterior cox separated by nearly their own 
* According to Casey (Ann. N. York Acad. vi. p. 683), this species is possibly synonymous with Centrinus 
(Limnobaris) nasutus, Lec. 
