OTHNIUS. 469 
thorax still more densely punctured ; the antenne longer and stouter and with the 
ninth and tenth joints as long as broad ; the elytra longer, and with the markings less 
distinct and in the shape of narrow zigzag bands. Of the North-American species, it 
appears to come nearest to O. umbrosus, Lec. The suture of the elytra is feebly longi 
tudinally depressed towards the apex. 
5. Othnius mexicanus, (Tab. XXI. fig. 18, 2.) 
Othnius mexicanus, Horn, Trans. Am. Ent. Soc. ii. p.133', and v. p.151; Chevr. Rev. et Mag. Zool. 
1874, p. 328°. 
Hab. Mexico !?, Cordova, Toxpam (Sallé), Jalapa (Hoge); Guaremata, Chiacam, 
Senahu, Cerro Zunil (Champion) ; Panama, Pefia Blanca (Champion). 
The numerous specimens before me (two of which have been examined by Dr. Horn) 
vary a little in the extent of the testaceous markings of the elytra (in one example the 
zigzag band of the ground-colour is not connected at the suture), but the general 
pattern is quite constant and all have a small spot on either side of the suture towards 
the apex. In the female the common sutural foveate depression towards the apex of 
the elytra is very distinct. 0. mexicanus varies in length from 4-53 millim. 
6. Othnius sticticopterus. (Tab. XXI. fig. 19.) 
Dark brownish-bronze, shining, somewhat thickly clothed with short suberect ashy hairs. Head and prothorax 
sparsely and coarsely punctured ; elytra subparallel towards the base, a little rounded about the middle, 
somewhat closely and not very finely punctured, the punctures coarser towards the base, marked thus :— 
a broad band before the middle (angulated on its lower edge outwardly) extending obliquely upwards to the 
shoulders, but not reaching the lateral margin, and enclosing a common basal patch of the ground-colour 
(in which at the base on either side of the scutellum is a testaceous spot), an angulated band behind the 
middle, narrowing outwardly and not reaching the lateral margin, and the apex (rather broadly), 
testaceous; legs and antennz testaceous. 
Length 5-54 millim. (¢ 9.) 
Hab. Mexico, Jalapa (Hége). 
Three examples. This species is closely allied to 0. mexicanus, from which it is only 
distinguished by the different system of the elytral markings :—In 0. mexicanus there is a 
broad band behind the middle (instead of before, as in O. sticticopterus), and behind this 
a testaceous spot (instead of a second angulated band) on either side of the suture (not 
mentioned in Dr. Horn’s description), and the apex is never broadly testaceous, the 
- apical margin at most being very narrowly so. 
The female has the suture of the elytra very distinctly depressed on each side (in the 
form of a common oblong depression) some distance before the apex. 
