414 PHYTOPHAGA. 



sides strongly rounded and narrowed in front, the anterior angles tuberculate, the surface impunctate, the 

 posterior margin perfectly straight ; scutellum black ; elytra widened towards the apex, closely and very 

 finely punctured, of a metallic purplish colour, with a green or violet shade ; underside and legs testa- 

 ceous, the extreme apices of the tibiae and the tarsi blackish. 



Hab. Panama (Boucard). 



This species is squarer in shape than its allies ; the greatest width of the elytra is 

 below the middle; the black head and very fine punctuation, as well as the bright 

 purplish colour of the elytra and the flavous thorax, separate CE. gemmata from the 

 preceding species, with which it agrees in size. 



ff Elytra for the most part with longitudinal bands or stripes. (Species 18-33.) 



18. (Edionychis quadrilineata. (Tab. XXIV. fig. 13.) 



(Edionychis quadrilineata, Harold, Berl. ent. Zeitschr. 1881, p. 126 \ 

 Eab. Mexico x (Salle). 



Two specimens from the collection of Sturm, and labelled as above by this author, 

 are before me ; they prove the correctness of Yon Harold's description. 



19. (Edionychis virgata. 



(Edionychis virgata, Harold, Deutsche ent. Zeitschr. 1880, p. 222 * ; Berl. ent. Zeitschr. 1881, 

 p. 130 \ 



Hab. Mexico x 2 , Pinos Altos in Chihuahua (Buchan-Hepburn), Cordova, Yolos, 

 Panistlahuaca, Puebla, Oaxaca (Salle), Jalapa (Hbge). 



In this species the elytral bands are very narrow and sometimes of a bluish colour, 

 and the lateral band is placed close to the margin ; the epipleurse remain testaceous at 

 their outer portion, but are black at the inner parts. It is impossible to say whether 

 all the specimens from the above localities really represent varieties of one and the 

 same species, varying as they do rather considerably in size, shape, and occasionally in 

 the width of the elytral bands. To separate them on slight differences would but have 

 added to the difficulties of determining the numerous closely allied forms ; and as all 

 the Mexican specimens agree very nearly or entirely with the description of (E. virgata, 

 Harold, I believe I am right in referring them to that species. 



20. (Edionychis chevrolati. (Tab. XXIV. fig. 15.) 



(Edionychis chevrolatii, Baly, Ann. & Mag. Nat. Hist. 5th ser. i. 1878, p. 322 l . 

 (Edionychis quinque-vittata, Jacoby, P. Z. S. 1880, p. 174 2 . 



Hab. Mexico x ; British Honduras 2 , R. Sarstoon ( Blancaneaux) ; Guatemala 

 (Salle). 



The description of this species requires some correction, which I am enabled to 

 make, having the type before me for examination. Mr. Baly gives the length of the 



