444 RHYNCHOPHORA. 
P. subparallela, the prothorax not so convex, less rounded at the sides, and feebly 
constricted in front, the elytra more finely striate. Larger than P. minuscula, the 
elytra more gradually narrowed from the base and rounded at the tip, the rostrum of 
the female abruptly flattened. | 
38. Pseudobaris mutabilis, sp. n. 
Oblong-ovate, flattened above, very shining, eneous; glabrous above, the punctures on the under surface and 
legs each bearing a minute scale. Head sparsely, minutely punctate, transversely depressed between the 
eyes ; rostrum (d ) arcuate, as long as the head and prothorax, moderately stout and closely punctate at 
the base, becoming more slender, flattened, and much smoother towards the tip, ( Q ) a little longer, and 
flattened and slender from near the base, the antenne inserted behind the middle in both sexes. 
Prothorax transverse, gradually narrowing anteriorly, feebly constricted in front; sparsely, finely punctate, 
except along the narrow, smooth, median space. Elytra a little wider than the prothorax, unarmed at 
the apex ; with faintly punctured, fine striew, the interstices almost smooth, broad, and feebly costate on 
the apical declivity, the third not widened at the base. Pygidium large in the 3, small and transverse 
inthe 9. Beneath sparsely, the abdomen very finely, punctate. Prosternum with a straight deep 
sulcus. Legs slender; femora unarmed. 
Var. Black or bluish-black. 
Length 23~3, breadth 1 {)-14 millim. (¢ 9.) 
Hab. Mexico (Trugqui, in Mus. Brit.), Teapa (H. H. Smith); Guatemata, Trece 
Aeguas (Schwarz and Barber, in U.S. Nat. Mus.) ; Costa Rica, Irazu (ogers); Panama, 
Volcan de Chiriqui (Champion). 
This is a form of P. acutipennis with the apices of the elytra unarmed and the third 
interstice glabrous at the base. It varies in colour in the same way, the Teapa and 
Costa Rican examples corresponding to P. callosipennis. Fourteen specimens have 
been seen, five of which are from Teapa. 
39. Pseudobaris perexigua, sp. n. 
Oblong, narrow, rather convex, somewhat shining, black; almost glabrous and finely alutaceous above, the 
punctures on the under surface and legs each bearing a minute scale. Head convex, densely punctate, 
transversely grooved between the eyes; rostrum moderately stout, about as long as the prothorax, 
abruptly and somewhat obliquely bowed from the base, densely punctate, the apical half much smoother ; 
antennal club rather stout. Prothorax transverse, constricted in front, the sides rounded anteriorly and 
parallel behind; densely punctate. Scutellum very small, rounded. LElytra a little wider than the 
prothorax, subparallel in their basal half; narrowly punctate-striate, the interstices closely and very 
finely uniseriate-punctate, almost flat on the disc, subcostate at the apex, the ninth becoming cariniform 
posteriorly. Pygidium large. Prosternal sulcus deep. Beneath closely, the ventral segments 1—4 very 
sparsely and finely, punctate. Legs short; femora rugosely punctate, unarmed ; tarsal claws long. 
Length 2, breadth 4 millim. 
Hab. GuatEMALA, Cerro Zunil 4000 feet, Pacific slope (Champion). 
One specimen, probably a male. A minute, narrow, oblong form not unlike 
P. scabrida, less rugose above, the apices of the elytra u1armed, the rostrum not 
so stout and somewhat oblique, the prosternal groove deeper. 
Plesiobaris envwula, Casey, from Florida, is of about tle same size and shape as the 
present species, except that it has the elytra more ‘narrowed posteriorly. 
