158 ^J""'=' 



NEW LONGICORN COLEOPTERA, CHIEFLY FROM MEXICO. 

 BY H. AV. BATES, F.E.S. 



Two of the following species are additions of great interest to 

 the Coleopterous Fauna of Mexico, for specimens of which I am 

 indebted to the liberality of Mr. Julius Flohr. I have added descrip- 

 tions of a few new species of Delfaspis, a New World genus, allied to 

 our European Purpuricenus, which have also been recently received. 



Ptrodes maculicollis. 



Ohlongus, cenescenti-niger, thorace grosse intricato-rvgoso, nitido, utrinque 

 apud a7igtdos ajiticos macida aurantlaco-Jiava ; elytris vermiculato-rugulosis 

 subopacis, <J aneo-fuscis anguste indistincte rufo-marginatis, ? fiilvo-rvfis. 

 Antennce utroque sexu corpore hrcinoi'es, purpuj^eo-cuprecB vel cyanecc,articulis 

 3 — 10 c? suhcylindricis rohustis, ? aj^icem versus gr ad atim dilaiatis. 



Long., i , 30—33 mm., ? , 38—50 mm. 



Canelos, State of Durango, Mexico. 



This fine northern species of Pyrodes differs in no essential point 

 of structure from the type of the genus, P. speciosus, of S. Brazil. 

 The antennae in the (^ are of similar form to those of P. speciosus, ? , 

 being only a little longer, and the joints a little broader. In the $ 

 the width of the joints is still greater, especially towards their apices. 

 In the very small difference as to length and form the antennce of the 

 new species most resemble those of Mallaspis xanthaspis and rliom- 

 hodera. The head is porrect, parallel-sided, coarsely rugose, and with 

 the central furrow and the concavity of the forehead much deeper 

 than in P. speciosus. The thorax is as broad as the elytra, dilated and 

 rounded (with edge serrated) immediately from the anterior angles 

 and to the very sharp lateral spine, after which it is abruptly narrowed. 

 The scutellum is moderately large, acute-angular, coarsely rugose, and 

 channelled down the middle. The elytra are brondly rounded at the 

 apex, with a short sutural spine. 



ESMEEALDA COSTULATA. 

 E. columbinas {Guer.) afflnin, paullo latior, aurato-viridis rcsplendcns, 

 elytris utrinque costulis Icevibus quatuor nee basin nee apicem attingeutibus ; 

 subtus viridi-eyanea polita. Long., 25 mm., ? . 



Eiver Madeira, Amazons (Coll., Bates). 



Eather more broadly oblong than individuals oE the same sex of 

 E. columhina and E. Icstijica. The central groove of the head is 

 broad and deep ; the antennae reach to more than half the length of the 

 elytra, joints 3 — 10 being compressed and triangular, with inner apices 



