LIMNOBARIS.—LIMNOBAROIDES. 359 
constricted in front, the sides rounded anteriorly and parallel behind; sparsely, very finely punctate, 
except along the median line, the punctures becoming coarser and closer at the sides. Scutellum small, 
subquadrate. Elytra rather long, a little wider than the prothorax, subparallel in their basal third, the 
apices separately rounded, the humeri somewhat swollen; sharply striate, the strie feebly punctate, the 
interstices smooth and flat. Beneath sparsely punctate, the ventral segments 1-4 with a few scattered 
punctures only, 1 deeply sulcate, the sulcus extending backward to the middle of 2. Prosternum with a 
narrow, shallow sulcus. Anterior coxe separated by a little less than their own width. Femora sparsely 
punctate. Anterior and intermediate tibiz with a long, the posterior pair with a shorter, apical uncus, 
the uncus on the anterior pair widened towards the base. 
Length 23, breadth 1,5, millim. (<¢.) 
Hab. Panama, David (Champion). 
One male. A small, narrow, glabrous form, with rufescent elytra and legs, the 
prothorax comparatively short, the elytra long and subparallel, the anterior tibie (¢ ) 
armed with a long hook at the apex. L. rufula is very like Buridius longirostris, Kirsch, 
from Peru, but the latter has a fully-exposed pygidium, relatively broader elytra, &c. 
23. Limnobaris cylindriclava, sp.n. (Tab. XVIII. figg. 8, 8a, 3.) 
Oblong-rhomboidal, narrow, flattened above, rather dull, black; the upper surface glabrous, the under surface 
and legs with minute, narrow, scattered whitish scales. Head sparsely, finely punctate, foveate between 
the eyes; rostrum strongly arcuate, about as long as the head and prothorax, stout, compressed, finely 
punctate, the antenne inserted at the middle, the antennal club cylindrical and greatly elongated, solid, 
and fully twice the length of the funiculus, joints 3-7 of the latter transverse and closely articulated. 
Prothorax nearly as long as broad, gradually narrowing from the base, constricted in front; closely, 
coarsely punctate, except along a narrow median space, the interspaces very finely alutaceous. Scutellum 
small, transverse. Elytra subtriangular, slightly depressed along the suture; sharply punctate-striate, 
the interstices flat, alutaceous, and finely uniseriate-punctate. Beneath coarsely, the ventral segments 
more finely, punctate. Prosternum broadly and very shallowly sulcate, the transverse subapical groove 
bifoveolate in the middle, and also foveate on each side of this. Anterior coxe separated by a little less 
then their own width. 
Length 23, breadth 13 millim. (<¢.) 
Hab. Paxama, David (Champion). 
One specimen. This is one of the few Barids known to me with the antennal club 
nearly as long as the scape and funiculus united, and it will probably have to be 
separated from Limnobtaris. Gereus longiclava also has a very elongate antennal club 
in the male; but in that insect the mandibles are straight and pointed, instead of 
being strongly decussate. 
LIMNOBAROIDES, gen. nov. 
Rostrum arcuate, moderately long; mandibles rounded externally, notched within, slightly decussate at the 
tip; antennal club ovate; prothorax feebly constricted in front; scutellum free, subquadrate; elytra 
very little wider than the prothorax, somewhat triangular, the humeri broadly rounded, leaving the 
upper part of the mesothoracic epimera exposed from above ; pygidium fully exposed, subvertical, and 
divided by a transverse suture in ¢ (fig. 9), gradually sloping and entire in Q (fig. 10); prosternum 
excavate and usually armed with two long spines in 3, unimpressed in @ ; fifth ventral segment truncate 
at the apex in d, rounded in 2; anterior coxse widely separated; femora clavate, unarmed; tarsal 
claws long, divergent; body ovate or elliptic, flattened above, sparsely squamose. 
Type, ZL. exposita. 
2 24 2 
