OXACIS. 159 
the female, joints 1 and 3 about equal in length, 11 constricted at the middle; prothorax longer than 
broad, the sides moderately rounded anteriorly and converging behind, the disc depressed in the middle 
before the base and with an oblique depression (very deep in some examples, quite shallow in others) on 
either side anteriorly, the base and apex slightly emarginate in the middle, the surface densely and finely 
punctured ; elytra subparallel, very closely and finely punctured (the punctures quite separate from each 
other), with two raised lines on the disc and the suture also a little raised, the raised lines and the suture 
accompanied on either side by a more or less distinct row of very shallow, fine, oblong, fuscous impressions ; 
beneath densely and finely punctured, testaceous, the sides and venter piceous-brown ; legs testaceous, the 
tibiee usually darker. 
Length 5-8 millim. (¢ @.) 
Hab. Mexico, Tehuacan (Hége). 
Many examples. ‘This is one of several.species of which we have only received 
examples from Tehuacan in the State of Puebla. 0. lineatula is closely allied to and 
resembles an abraded example of O. angustata; but differs in its smaller size, less 
elongate shape, and more shining, less densely punctured, and differently-coloured | 
elytra. The raised lines and suture of the latter are accompanied on either side by fine 
fuscous lines, formed by serially arranged very shallow oblong fuscous impressions. 
(Oa c/s) 
18. Oxacis cana. (Tab. VII. figg. 18, 19, ¢, vars.) 
Asclera cana, Lec. Proc. Ac. Phil. vii. p. 225°. 
Ozxacis cana, Lec. New Species Col. p. 165. 
Hab. NortH America, San Diego1, Texas.—Mexico, Presidio (Forrer), Mazatlan, 
Acapulco, Chilpancingo, Iguala, Oaxaca (Hége), Cuernavaca, Guanajuato, Leon, Sante- 
comapan, Vera Cruz (Sad/é), Atoyac in Vera Cruz (H. H. Smith). 
This is an exceedingly variable species in size and in the colour of the upper and 
under surfaces, legs, and antenne; and some of its varieties are quite inseparable from 
the numerous Texan examples before me. O. cana may be known from the allied 
forms by its very elongate shape, finely and densely punctured head and thorax, densely 
scabrous-punctate elytra, and very fine short ashy pubescence. In fresh examples the 
pubescence on the front of the head and on each side of the disc of the thorax appears 
to be thicker, and has the appearance of being transversely or obliquely combed. The 
thorax usually has a median vitta, and the sides at the middle piceous or brownish (the 
median vitta being sometimes quite obsolete, and the lateral marking conspicuous), 
bat is sometimes entirely testaceous ; in some specimens there is a narrow smooth space 
or raised line on the middle of the disc and, rarely, a minute bare space at the inner 
limit of the lateral marking. The elytra are brownish or fuscous, sometimes with a 
violaceous tinge, with the suture, and often the lateral margin also, testaceous; in rare 
examples they are entirely testaceous. 
The following varieties are connected with the typical form by numerous grada- 
tions :— 
Var. a. The prothorax flavous, the median vitta and the lateral spot orange-red or reddish-brown, the former 
