EXOCHOMUS. 179 



base black in an indeterminate manner between the eyes. Thorax and elytra blue- 

 black, scarcely visibly punctate ; the former with the lateral margins very narrowly 

 yellowish, the latter with a bright red spot at the front angles, and, in the two speci- 

 mens from Jalapa and Vera Cruz, with a small linear spot of the same colour, and very 

 indeterminate, just within the margin before the apex. 



The humeral spot varies a little in size and shape : in the specimen from Chontales 

 it is square, and a little more oblong than in any of the others, in which it is trans- 

 verse and placed just below the callus. 



In all the specimens the front tibiae are angularly widened. The specimen from 

 Iguala has the elytra very slightly brownish, and with brown translucent margins, 

 being probably less matured. I think it possible that this insect should be associated 

 with Cladis nitidula, a species from Cuba and other West-Indian Islands. I do not, 

 however, regard Cladis as differing materially from Exochomus. 



One specimen from each locality are all that have been obtained. Our figure 

 represents the example from Jalapa. 



6. Exochomus apicatus. 



Orbicularis, nigro-cyaneus ; capite, corpore subtus, prothoracis limbo antico et laterali, elytrorumque margine 

 reflexo, et apicibus, luteis ; elytris distincte subtiliter crebre punctatis. Long. 2| millim. 



Eab. Panama, Bugaba, Volcan de Chiriqui 4000 to 6000 feet (Champion). 



Head pale yellow, infuscate towards the base, in one example entirely black ; thorax 

 with the anterior margin only brown at the extreme edge, the sides narrowly margined 

 with yellow, but in certain examples (as the one with the head black) this is reduced 

 to a faint mark at the front angles ; elytra blue-black, with the reflexed narrow margin 

 brown-red, widening at a third from the apex, but the yellow colour narrowed again 

 at the sutural angle ; legs and body beneath yellow. 



Six specimens of this insect were obtained, three of them near Bugaba. It is possible 

 that the darker-headed specimens are of one sex, but this is uncertain. 



7. Exochomus bisbinotatus. (Tab. X. fig. 10.) 



Niger, £eque ac distincte punctatus ; protboracis margine antico, lateribus, elytrorum margine laterali et 

 epipleurali, maeulisque duabus rotundis, una basin attingente, una subapicali, tibiis tarsisque flavis, 

 femoribus infuscatis. Long. 2 millim. 



Var. capite etiam flavo. 



Eab. Mexico (Salle), Motzorongo in Vera Cruz (Flohr) ; British Honduras, Belize 

 (Blancaneam) ; Guatemala, Coban in Vera Paz (Champion). 



Head pitchy black or yellow (probably differing in the sexes). Thorax in the black - 

 headed examples only faintly reddish at the anterior margin, and with the front angles 

 yellowish ; in the examples with yellow heads, the front margin narrowly yellow with 

 the sides more broadly yellow. The reflexed margin of the elytra and the epipleurse 



2.4*2 



