CARDIOPHORUS. 417 



name aptopoides is here retained solely for the form with dentate claws. This insect 

 varies greatly in the colour of the upper surface, the typical examples having an orange- 

 yellow submarginal vitta on each elytron. It has been collected in plenty in all its 

 varieties at Chilpancingo, unaccompanied by C. brevis. 



A specimen from Chilpancingo of the typical form is figured. 



2. Cardiophorus brevis. (Tab. XIX. fig. 3, var.) 



Cardiophorus aptopoides, Cand. Elat. Nouv. i. p. 64 (part.) l . 



a. The prothorax rufous, with a large black patch on the disc not extending to the base ; the elytra each with 

 an orange-yellow or flavous submarginal vitta. 



Hab. Mexico, Mazatlan (coll. Janson, ex Candeze), Presidio (Forrer), Acapulco 

 (Hoge), Sinaloa 1 . 



/3. The prothorax as in a, but with the black more extended, sometimes leaving only a spot at the hind angles 

 rufous ; the elytra entirely black. (Fig. 3.) 



Aptopus brevis, Cand. Ann. Soc. Ent. Belg. 1889,, p. Ill (Elat. Nouv. iv. p. 45) \ 

 Cardiophorus devectus, Cand. Elat. Nouv. v. p. 47 (1893) 3 . 



Hab. Mexico, Presidio (Forrer). 



y. The prothorax and elytra entirely black. 



Hab. Mexico, Presidio and Ventanas (Forrer), Acapulco (Hoge), Sierra Madre de 

 Chihuahua 3 , Sinaloa 2 . 



The specimens referred to C. brevis, for a type of which we are indebted to Dr. Can- 

 deze, have the claws simple. The colour-varieties correspond exactly to those of 

 C. aptopoides, C. brevis answering to the var. y of that insect. The genitalia of the 

 male are similarly formed in both. C. brevis has been received in numbers from 

 Presidio and Acapulco, unaccompanied by C. aptopoides. A specimen from Presidio 

 of the var. j3 is figured. 



3. Cardiophorus vulneratus, (Tab. XIX. fig. 4, e .) 



Horistonotus vulneratus, Horn, Trans. Am. Ent. Soc. xii. p. 35 (1884) (nee Cand. *) 1 . 



Hab. Noeth Ameeica, Arizona (Morrison 1 ). — Mexico, Northern Sonora (Morrison. 



We have received five specimens of this species, two of which were examined some 

 years ago by Dr. Horn. C. vulneratus is extremely like the var. /3 of C. brevis ; but it 

 is considerably smaller, the thorax is a little more coarsely and closely punctured, and 

 the elytral interstices are not so convex. The insect clearly belongs to Cardiophorus, 

 the incomplete carina separating the pronotum from the propleurae being placed far 

 below the lateral margin of the prothorax. 



* C. vulneratus, Cand., from Burma [Ann. Mus. Genova, xxvi. p. 682 (1888)], requires a new name. 



biol. cente.-amee., Coleopt, Vol. III. Pt. 1, December 1895. 3 H 



