LIMNOBAROIDES.—PSEUDORTHORIS. 397 
One female. Larger, more flattened above, and a little more elongate than 
L. exposita, the prothorax sparsely and more finely punctate on the disc, the rostrum 
(2) longer, smoother, and more slender, the antenne inserted nearer to its base. The 
setiform cinereous scales on the elytra are arranged in a scattered series down each 
interstice. From Limnobaris calandriformis, &c., the present species may be readily 
distinguished by the long, completely exposed pygidium. 
3. Limnobaroides flavolimbata, sp. n. (Tab. XVIII. figg. 11, lla, ¢.) 
Elliptic, flattened above, shining, piceous, the rostrum, prothorax, femora, and tibie rufescent, the prosternal 
spines testaceous; the sides of the prothorax and the under surface thickly clothed with rather coarse, 
hair-like, ochreous scales, the elytra with scattered similar scales intermixed with darker ones along each 
interstice (the ochreous scales predominating at the base), the legs sparsely set with fine hair-like yellow 
scales. Head thickly punctate; rostrum moderately stout, strongly arcuate, longer than the head and 
prothorax, closely and deeply striato-punctate, rugose at the sides towards the base, the antenne inserted 
at the middle. Prothorax broader than long, rounded at the sides anteriorly, narrowed and constricted 
in front; closely, rather coarsely punctate, except along a narrow smooth space down the middle. 
Scutellum trapezoidal, smooth. Elytra rounded-triangular, a little wider than, and less than twice the 
length of, the prothorax, depressed along the suture anteriorly; narrowly punctate-striate, the interstices 
flat and rather closely uniseriate-punctate. Pygidium subvertical, densely punctate, and with a transverse 
suture. Beneath closely punctate; first ventral segment broadly depressed down the middle, the fifth 
truncate at the apex. Prosternum armed with two long spines, and with a broad, deep, smooth excavation 
extending forward to the apex. Anterior coxs separated by rather more than their own width. 
Length 34, breadth 13 millim. (¢.) 
Hab. GuatreMaua, Pantaleon, Pacific slope, 1700 feet (Champion). 
One specimen, in very fresh condition. Easily recognizable by the rather coarse, 
close ochreous vestiture of the under surface and of the sides of the prothorax. 
The rostrum is stouter, longer, and more strongly arcuate than in the same sex of 
L. exposita. 
PSEUDORTHORIS, gen. nov. 
Rostrum arcuate, rather slender, moderately long; mandibles short, rounded externally, slightly notched 
within, decussate; antennal club small, ovate, pubescent; prothorax transverse, moderately constricted 
in front; scutellum small, free; elytra wider than the prothorax, oblong-subtriangular; pygidium long and 
. projecting, gradually sloping to the tip and entire in both sexes (fig. 12 6); prosternum unarmed, shallowly 
sulcate ; anterior cox narrowly separated ; tarsal claws free ; body oblong-rhomboidal, squamose. 
Type, Ps. devexus. 
The single species placed in this genus seems to be nearest related to the N.-American 
Orthoris * and Rhoptobaris, Lec., from which it differs in the distinctly sulcate pro- 
sternum, the small antennal club, the subtriangular elytra, the squamiform vestiture, &c. 
The unarmed, shallowly sulcate prosternum and the narrowly separated anterior 
coxee separate Pseudorthoris from Limnobaroides, which also has a protuberant 
pygidium in both sexes 7. The present genuy may be treated as an osculant form, 
* The two members of this genus are said by Pierce to attack different species of Mentzelia (Ent. News, 
1907, p. 381). 
+ Baris scolopacea, Germ., a Palearctic insect that has been introduced into North America, also approaches 
Pseudorthoris ; it cannot be included in Baris as restricted by Casey. 
