264 PHYTOPHAGA. 



1. Diphaulaca aulica. 



Biphaulaca aulica, Oiiv. Ent. vi. p. 678, t. i. fig. 15 '; Harold, Coleopt. Hefte, xiv. p. 4'. 

 Diphaulaca bicolor, De Geer, Mem. Ins. v. p. 357, t. 16. fig. 20 3 . 



Eab Mexico, Juquila, Capulalpam, Oaxaca, Cordova, Puebla, Toxpam, Santecoma- 

 pam, Cuernavaca, La Parada, Cosamaloapam, Tuxtla (Salle), Jalapa (Edge) ; British 

 Hondukas, river Sarstoon, river Hondo (Blancaneaux) ; Guatemala (coll. Salle), near 

 the city (Salvin), Zapote, Capetillo, Chacoj, Chiacam, Sabo, Tamahu (Champion); 

 Costa Rica (van Patten); Panama, Volcan de Chiriqui (Champion). -Colombia* ; 

 Guiana 1 3 . 



Von Harold has given a renewed description of this species, which seems to have a 

 wide geographical distribution. From the above localities more than a hundred speci- 

 mens are before me, the variability of which leave me no other choice but to refer them 

 all to the same species : the type, which is described as having red legs and underside, 

 agrees with a great number obtained by Mr. Champion ; others, from the same 

 localities, are black below with legs of the same colour ; and between these forms I 

 have all kinds of intermediate stages. The punctuation of the elytra is also somewhat 

 variable, the striee, which are fine, sometimes continuing to the apex, but generally 

 becoming indistinct below the middle ; the size of the insects is also varying to a very 

 great extent, from two to four lines, and the colour of the antennas varies from red to 

 black, with intermediate stages. I see therefore no reason to consider those forms 

 specifically distinct, and prefer to look upon them as varieties. 



2. Biphaulaca wagneri. 



Diphaulaca wagneri, Harold, Coleopter. Hefte, xiv. 1875, p. 5. 



Eab. Guatemala. 



I have but little doubt that this species is but one of the numerous varieties of 

 D. aulica, as the principal difference, according to the author's diagnosis, seems to be 

 one of colour ; but not having the type to compare, I cannot be sure about it. 



3. Diphaulaca intermedia. 



Oblong-ovate, rufous ; antenna (the three basal joints excepted) and tarsi black ; elytra metallic green, 

 closely and finely punctate-striate. 



Length 2-1- lines. , „ ,, 



Head impunctate ; frontal tubercles small but distinct ; carina short, tuberculate ; antennae less than halt the 

 length of the body, all the joints rather short, the first three rufous, the rest black ; thorax transverse, 

 constricted near the base, the sides rounded anteriorly, anterior angles acute but little produced ; basilar 

 sulcation deep ; scutellum rufous ; elytra widened towards the apex, the base distinctly raised and trans- 

 versely depressed, the shoulders prominent ; surface very closely and finely punctured, the punctures 

 forming semiregular lines, but disappearing towards the apex ; underside and legs rufous; tarsi black or 

 piceous. 



Eab. Panama, Volcan de Chiriqui (Champion). 



