ULOSONIA. 165 
Six examples. Though this species is very near U. tricornis it appears to me to be 
sufficiently distinct. 
4. Ulosonia dejeani. (Tab. VII. fig. 19, ¢ *.) 
Hypogena triceros, De}. in litt. 
Elongate ovate, depressed, subparallel, dark reddish brown or black, shining. Head closely and distinctly 
punctured, armed in the male with a strong broad horn (curving upwards, concave within, and truncate 
at the apex) in front, and a longish curved horn (directed forwards) on each side of the intraocular space 
(starting from immediately above the eyes), the intraocular space narrowly raised and swollen on each side 
(impinging on the inner margin of the eyes) and rugulosely punctured in the female ; prothorax transverse, 
almost as broad in front as at the base, and the sides straight from the middle to the base in the male, a 
little narrowed anteriorly and the sides slightly rounded in the female, very narrowly margined at the 
sides, the base with a short oblique fovea on each side about the middle, the disc obsoletely or feebly 
impressed before the base, exceedingly finely and closely punctured ; elytra punctate-striate, the impres- 
sions shallow and placed close together, the interstices flat, finely and closely punctured ; under surface 
rather dull, somewhat closely punctured, the flanks of the prothorax reticulate-punctate. 
Length 63-84 millim. (¢ 2.) 
Hab. Guatemata, El Tumbador, Las Mercedes (Champion).—Cotomsia (coll. F. 
Bates). 
Six examples. This species will be readily identified by its depressed form, the 
very narrowly margined and comparatively smooth thorax, and the peculiar cephalic 
armature of the male; in the female the intraocular space is narrowly raised on each 
side, impinging on the eyes as in the same sex of U. bi-impressa. Labelled Hypogena 
triceros, Dej., in Mr. F. Bates’s collection. 
A well-developed male from Las Mercedes is figured. 
5. Ulosonia bi-impressa. 
Tenebrio (?) bi-impressus, Latr. in Humb. et Bonp. Recueil d’Observ. de Zoologie, ii. p. 17, t. 31. 
fig. 6 (1833) ; Lacord. Gen. Col. v. p. 337, nota '. 
Ulosonia bicornis, Deyr. in litt. 
? Trogosita vacca, Fabr. Syst. Hleuth. i. p. 153. 
Hypogena bi-impressa, De}. Cat. 3rd edit. p. 220°. 
Hab. Mexico (coll. F. Bates), Ventanas (Forrer), Tuxtla, Playa Vicente, Chinantla 
(Sailé), Jalapa (Hoge); Brirish Honpuras, R. Sarstoon (Blancaneaux) ; GUATEMALA, 
Yzabal (Sallé), Pantaleon, Las Mercedes, El Tumbador, Paraiso, El Reposo, Mirandilla, 
Teleman (Champion) ; Nicaragua, Chontales (Janson); Panama (coll. Bates), Bugaba 
(Champion).—Co.oms1a }, Cartagena *, Bogota ; Guiana; BRaziu. 
A widely distributed and common species in Tropical America, ranging from Mexico 
to Brazil. The frontal horn in the male of this species is shorter than the hinder ones, 
and always in the form ofa short conical tubercle, the hinder ones only developing into 
long porrect horns. The thorax is exceedingly finely and closely punctured, often with 
* This insect is longer, narrower, and more parallel than represented on the Plate. 
