366 PHYTOPHAGA. 



13. Aphthona mexicana. (Tab. XXI. fig. 21.) 



Below black; antenna* and legs fulvous, apical joints of the former and the femora partly fuscous; above 



bluish-black; thorax impunctate; elytra regularly punctate-striate, the punctures distinct to the apex. 

 Length 1 line. 



Eab. Mexico, Saltillo in Coahuila (Br. Palmer). 



This species seems very closely allied in colour and also in sculpture to A. ubaquensis, 

 Harold, from Colombia, from which I am obliged to separate it on account of its smaller 

 size and the regularly punctate-striate elytra, on which the striae, although finer, are 

 visible to the apex ; in all other respects the insect agrees perfectly with Von Harold's 

 description : the frontal tubercles are distinct, narrow, and transverse, and the colour of 

 the antenna and the legs is identical ; but A. ubaquensis is described as having somewhat 

 irregularly punctured elytra and of a length of 2f-3 millim. It may, however, be that 

 A. mexicana is not specifically distinct, but only a local variety. 



14. Aphthona Mvipennis. (Tab. XXI. fig. 24.) 



Fulvous ; terminal joints of the antennae fuscous ; thorax extremely finely punctured ; elytra finely punctate- 

 striate. 



Length 1 line. 



Head impunctate, the frontal tubercles very distinctly raised, transverse; carina short and distinct; labrum 

 and palpi piceous ; antennae more than half the length of the body, third and fourth joints equal, not 

 much longer than the second joint, which is much thickened, the six or seven terminal joints fuscous ; 

 thorax about one half broader than long, the sides perfectly straight, angulate in front of the anterior 

 angles, surface scarcely visibly punctured (even when seen under a strong lens) ; elytra convex, without 

 any basal depression, the disc finely and regularly punctate-striate, the punctures scarcely visible at the 

 sides, but distinct to the apex ; first joint of the posterior tarsi as long as the three following together. 



Hab. Guatemala, Cerro Zunil (Champion). 



A single specimen. The uniform fulvous colour (the tibiae only being paler) and 

 the straight sides of the thorax, seem good distinguishing characters of this species. 



15. Aphthona palpalis. 



Fulvous ; palpi long and slender ; thorax transverse, scarcely visibly punctured ; elytra metallic green, strongly 

 punctate-striate. 



Length 1 line. 



Head impunctate, fulvous, with a very slight metallic gloss ; frontal tubercles narrow, placed obliquely trans- 

 verse ; carina short but distinctly raised ; eyes very large ; palpi thin, long, and with the terminal joint 

 acutely pointed ; antennae fulvous, the terminal joints slightly darker, third and fourth joints equal, 

 distinctly longer than the second; thorax about twice as broad as long, the sides rounded, slightly 

 constricted near the base, the posterior angles acute but not produced, surface only visibly punctured 

 when seen under a strong lens, like the head with a faint metallic gloss; scutellum fulvous; elytra 

 nearly parallel, strongly and regularly punctate-striate, the punctures finer but distinct to the apex, the 

 interstices below the base indistinctly wrinkled transversely here and there ; underside and legs fulvous ; 

 metatarsus of the hinder tibiae as long as the three following joints together. 



Hob. Panama, Volcan de Chiriqui (Champion). 



