PSEUDOBARIS, 445 
40. Pseudobaris stigmatica. (Tab. XXI. fig. 26, 2.) 
Pseudobaris stigmatica, Solari, Ann. Mus. Genova, xlii. p. 432 (1906) *. 
Hab. Mexico, “Sierra de Durango”! (Hoge, in coll. Solari). 
This species, a co-type (2 ) of which has been examined, forms a sort of connecting- 
link between the P. undulata- and P. acutipennis-groups. It is separable from all the 
varieties of P. undulata by the short but distinct apical prominences of the elytra 
and the elongate, comparatively slender rostrum (fig. 26). The anterior femora are 
finely denticulate and the anterior tibie strongly sinuate within. The prosternal 
sulcus is margined at the sides and moderately deep. 
41. Pseudobaris acutipennis. (Tab. XXI. figg. 27, 27a, b, 2.) 
Baridius acutipennis, Say, Descr. Curc. N. Am. p. 27 (1831) '; Complete Writings, i. p. 295°; 
Boh. in Schénh. Gen. Cure. iii. p. 670°. 
Pseudvbaris acutipennis, Casey, Ann. N. York Acad. Sci. vi. p. 558+. 
Hab. Mexico! ~* (Truqui, in Mus. Brit.), Toxpam, Yolos, Parada, Jacale (Sallé), 
Jalapa, Zacuaitipan (Hoge), Atoyac (H. H. Smith), Orizaba (H. H. Smith; Osborn, in 
U.S. Nat. Mus.), Cordova, Nogales (Anaé, in U.S, Nat. Mus.), Tehuantepec (Mus. 
Srit.); Guatemaua, Trece Aguas (Schwarz and Barber, in U.S. Nat. Mus.), San 
Gerénimo, Duefias, Calderas (Champion); Panama, Volcan de Chiriqui (Champion). 
Var. Nigro-ceruleous or black. 
Pseudobaris callosipennis, Solari, Ann. Mus. Genova, xli. p. 431 (1906) °. 
Hab. Mexico (coll. Solari), Omilteme in Guerrero (H. H. Smith), Toxpam (Sadié) ; 
GUATEMALA, Chiacam, Purula, and San Gerdnimo (Champion); Costa Rica® (Biolley) ; 
Panama, Volcan de Chiriqui (Champion). 
A common insect in Central America, and mainly recognizable by its small size, the 
dentate apices of the elytra, the interstices of the latter costate at the apex and the 
third with a small patch of whitish scales at the base, and the slender legs. The typical 
form is eneous in colour and it is found in many of the same localities as the dark 
variety, the latter being rare in Mexico and common in the more southern countries. 
Specimens also occur with the surface of the prothorax dull and alutaceous. The 
females have a much longer, smoother, and more slender rostrum than the males. 
The males have the first ventral segment slightly flattened in the middle and the fifth 
truncate at the apex, leaving the pygidium partly visible from beneath. The prosternal 
sulcus is deep and sharply margined, The types (¢ 2) of P. callosipennis, kindly 
communicated by Signor Solari, are black, like the other examples we have received 
from Costa Rica. About 100 specimens have been examined in all. 
