314 PHYTOPHAGA. 



and resembles that of D. recticollis ; but the sides in the present species are much more 

 rounded, and provided with a distinct and rather broad margin. In all the specimens 

 before me, to the number of twenty-four, the sutural and submarginal band is of a 

 fulvous or'piceous, not black colour, and often even quite absent or scarcely visible. 

 But the shape of the thorax is the principal distinguishing feature of this species. 



22. Disonycha militaris. (Tab. XIX. fig. 5.) 



Fulvous ; antenna (the first two joints excepted), tibiae, and tarsi black ; elytra testaceous, a very thin sutural, 



discoidal, and sublateral stripe black. 

 Var. a. The sublateral elytral stripe absent. 



Var. b. Sides of the elytra and the underside rufous, rest as in var. a. 

 Length 3-3| lines. 



Hab. Mexico (Museum Stuttgart); Guatemala, Zapote, San Geronimo, Chacoj 

 (Champion); Panama, David (Champion). 



The black elytral stripes in this species are extremely thin, the lateral one being 

 sometimes absent ; on account of these narrow bands the species cannot be mistaken 

 for any other ; the antennee are robust and rather short, the fourth joint is scarcely 

 longer than the third ; in the pretty variety b the lateral margin of the elytra and the 

 whole underside is stained with rufous. The head in all the specimens has a deep, 

 but small fovea in front of the eyes ; the thorax is but little narrowed in front, impunc- 

 tate and without spots ; the posterior angles are more obliquely cut than is usually the 

 case, and the elytra are scarcely punctured. 



23. Disonycha figurata. (Tab. XVIII. fig. 24.) 



Entirely testaceous or flavous ; antennas black, the first tbree joints testaceous below ; thorax with two small 



spots ; elytra minutely punctured, the elytral bands very obsolete. 

 Var. a. Thorax and elytra entirely testaceous. 

 Var. b. Femora fulvous, tibiae and tarsi black. 

 Length 3-3| lines. 



Hab. Mexico, Yentanas (Forrer), Cerro de Plumas, Oaxaca (Hoge), Juquila, Cordova, 



Playa Vicente, Tuxtla, Capulalpam, Guanajuato (coll. Salle) ; Guatemala, Capetillo, 



Duenas, Chacoj (Champion); Panama, Bugaba (Champion). 



I have not much doubt that this insect is but a pale or, may be, immature form of 

 D. altemata or an allied species ; as there are, however, so many specimens of the same 

 coloration before me, I have thought it best for the sake of completeness to give this 

 form another name. Intermediate degrees are not wanting in which the evanescent 

 elytral bands of most specimens are better visible ; the shape too and the punctuation 

 of the elytra are equally variable ; the thorax in most specimens has two small spots 

 at the middle of the disk ; in others these are wanting ; the elytra are very finely or 

 scarcely visibly punctured. In all other respects the species cannot be distinguished 

 from D. altemata or some of its varieties. 



