BARIS. 459 
b*, Scutellum oblong, narrowed posteriorly ; elytral interstices broad 
and minutely uniseriate-punctate ; body geneo-piceous . . . Species 31. 
d?, Prosternum sulcate; prothorax abruptly tubulate in front ; elytral 
interstices each with a scattered row of fine, slender sete ; frontal 
groove deep ; body black: length 3-4) mm. 
«. Rostrum arcuate above and concave beneath ; scutellum small, 
subtriangular ; prosternal sulcus shallow . . + + + + + + = Species 32. 
d°®. Rostrum arcuate above and broadly flattened beneath ; scutellum 
larger ; prosternal sulcus deep . Soe ee ee Species 33. 
d’. Tarsal claws small; pygidium very short, vertical ; frontal depression 
shallow ; prosternum unimpressed ; elytra costate at the apex; body 
oblong, polished, rufescent: length Qkmm.. 2. - e+ 6 ee ee Species 34. 
1. Baris ingens. (Tab. XXII. figg. 9,94, 6 .) 
Baris ingens, Casey, Ann. N. York Acad. Sci. vi. pp. 471, 476°. | 
Hab. Norra America, Arizona !.—Mexico (Mus. Brit.), Northern Sonora (Morrison), 
Ciudad and Ventanas in Durango (ége), Yolotepec in Oaxaca (Sallé). 
This is the largest of the N.-American species of Baris, and like some of its allies 
extends southward into Mexico or Guatemala. It is probably a large form of 
B. striata, with the vestiture of the elytra, pygidium, and under surface a little longer 
and more abundant. In some of the Mexican specimens the second and third elytral 
interstices are more or less biseriate-punctate. 
2. Baris striata. 
Baridius striatus, Say, Descr. N. Am. Cure. p. 17 (July 1831)+; Complete Writings, i. p. 281°. 
Baris striata, Lec. Proc. Am. Phil. Soe. vi. p. 291 *s Casey, Ann. N. York Acad. Sci. vi. pp. 471, 
477°. 
Baridius mexicanus, Sturm, in litt.’. 
Hab. Norta America ! 24, Michigan to Arizona °,—Mexico® (Mus. Brit.), Omilteme 
in Guerrero $000 feet (H. H. Smith); Guatemata, Duehas (Champion). 
The seven specimens from Mexico referred to this species are very like B. strenua, 
but they have the prothorax less rounded at the sides and a little narrower, the elytra 
somewhat longer, and the vestiture of the latter and of the under surface sparser and 
finer. The punctures on the prothorax are large and here and there confluent. In 
both insects the coarse seriate punctures on the elytra are so closely placed as to make 
the lateral portions of the interstices appear subcostate. 
3. Baris strenua. (Tab. XXII. figg. 10, 104, ¢-) 
Baridius strenuus, Lec. Proc. Acad. Phil. 1868, p. 363°. 
Baris strenua, Lec. Proc. Am. Phil. Soc. xv. p. 2907; Casey, Ann. N. York Acad. Sci. vi. 
pp. 472, 480°. 
Baridius punctatissimus, Duges, in litt. *. 
3NN 2 
