344 RHYNCHOPHORA. 
genus is represented by a 
about the same number of species in North and Central 
America; those from our region may be grouped thus * 
q. Prosternum bispinose in 3. 
a. Anterior femora with a broad blunt tooth in both sexes . . + . + ; Species 1]. 
1 Anterior femora unarmed. 
a. Anterior tibiz without subapical tooth in 2. 
a’. Prothorax strongly tubulate in front: species large. - . «© + - Species 2. 
b°. Prothorax moderately or feebly constricted in front. 
a‘. Body broader, elytra flattened, prosternum bifoveate in ¢, anterior 
coxe widely separated. 2. 6 1 ee ee ee ee + + Species 3, 4. 
b‘. Body narrower, elytra less depressed, anterior coxe more approxi- 
mate .. . toe eee we el el wee) «Species 5-8. 
6°. Anterior tibiz with a subapical tooth i ing. ...... +» . Species 9. 
6. Prosternum unarmed in ¢. 
c'. Antennal club ovate. 
c’. Upper surface with a rather sparse uniform vestiture . . . . . . Species 10. 
d?. Upper surface with a close uniform vestiture . . . . . . . . « Species 1}. 
e°. Upper surface with scattered scales, those on the prothorax sometimes 
clustered into lateral vittee, and those on the elytra into transverse 
fascie or one or two (interrupted or complete) lines along each 
interstice . . Soe ee ee ee ee ee eee ee) Species 12-20. 
f°. Upper surface bare . coe tee ee ee ew ew ee ee) «Species 21, 22. 
d', Antennal club cylindrical, very elongate woe ee ew we we ee) «Species 23. 
1. Limnobaris latidens, sp. n. (Tab. XVII. figg. 31, 3la, ¢.) 
Subelliptic, rather broad, flattened above, shining, black, the tarsi, apex of the rostrum, base of the antenne, 
3. 
and prosternal spines sometimes more or less ferruginous ; the sides of the prothorax with scattered, and 
the elytral interstices with seriately-arranged hair-like, yellowish-white scales, those on the elytra 
becoming more crowded at the base and sometimes in part infuscate; the under surface and legs also 
with minute hair-like scales. Head transversely grooved between the eyes, sparsely, minutely punctate ; 
rostrum strongly arcuate, moderately stout, rather longer than the head and prothorax, seriate-punctate, 
the basal portion rugose at the sides ; joint 2 of the funiculus longer than 3. Prothorax nearly as wide 
as the elytra, broader than long, rounded at the sides anteriorly, narrow and tubulate at the apex, feebly 
sinuate at the base, the short median lobe transversely grooved ; coarsely and closely punctate at the 
sides, sparsely and finely so on the disc, a narrow space down the middle of the latter impunctate. 
Scutellum oblong. Llytra deeply striate, the strie feebly punctate, the interstices flat, rather coarsely 
and closely uniseriate-punctate, the rows of punctures becoming double towards the base. Beneath 
coarsely and confluently, the ventral segments more finely, punctate. Prosternum with a deep sub- 
quadrate cavity in front limited on each side by a longitudinal ridge. Anterior coxe separated by 
rather more than their own width. Anterior femora with a stout, blunt, oblique tooth towards the 
apex, the others unarmed. 
Prosternum in fully-developed examples armed with two short spines, and with a very deep circular 
cavity between them. 
Length 23-4, breadth 14-2 millim. (¢ @.) 
Hab. Guatemata, Teleman and San Gerdnimo in Vera Paz (Champion: 2); Panama, 
Bugaba (Champion: ¢), Tabernilla, Canal Zone (Busck, in U.S. Nat. Mus.: ¢ 2 ). 
* The male is unknown of LZ. quadricollis and L. uniformis, 
