AGKILUS. 115 



124. Agrilus glabratus. 



Elongatus, depressus, geneus, glaber, elytra fere nigra ; capite sulcato ; thorace tenuiter haud crebre punctata, 

 medio leviter impresso ; elytris tenuiter haud crebre punctatis, postice attenuatis, apice deuticulato ; abdo- 

 mine margine superiore maculis quatuor parvis albis ornato. 



Long. 6 lin. 



Hab. Guatemala, Coban in Vera Paz (Conradt). 



The head is inclined, punctured, the punctures not crowded together ; the longitu- 

 dinal impression is rather deep, extending from the top of the head to a short distance 

 above the clypeus, transversely rugulose at the lowest part. The thorax is smooth, 

 obscurely and not very closely punctured, narrowed in front, broadest just before the 

 hind angles, where there is a round swelling, on the inner side of which is a deep 

 round fovea ; the median impression is very shallow and not well defined. The elytra 

 are somewhat irregularly punctured, the punctures not very close together — one 

 example has the punctuation very obscure and the subcosta much less distinctly marked ; 

 the apices are separately rounded and evenly denticulate. The prosternal chin-piece 

 is gently and widely emarginate. The prosternum is not closely punctured ; the inter- 

 coxal process is a trifle widened behind the coxae, and then arcuately narrowed, almost 

 rounded ; the central process is at a lower level. The episterna are punctured, the punc- 

 tures not crowded together, with a line of pubescence on the outer margin. The 

 abdomen has the lateral carina of the basal segment much thickened, slightly interrupted 

 behind the middle. 



This species somewhat resembles A. squalus, but is without the dilated apex to the 

 elytra. 



125. Agrilus prionurus, 



Agrilus prionurus, Chevr. Silberm. Rev. Ent. v. p. 95 (1837) \ 

 Hab. Mexico 1 (Vasselet, in coll. Salle). 



The type-specimen of this insect (the only one known to me) differs from the fore- 

 going species in being larger ; in having the head nearly black instead of bronzy-green ; 

 the elytra slightly tinted with bronze instead of being black and with a slightly more 

 evident subcosta ; and the punctures on the prosternum a little closer together. 

 These differences may be specific or sexual. 



126. Agrilus incertus. 



Stenogaster incertus, Chevr. Col. Mex. Cent. ii. fasc. 6, no. 138 (1835) \ 



Hab. Mexico j , Playa Vicente (Salle). 



This is a peculiar species, having no impression on the disc of the thorax, and 

 scarcely any trace of a subcosta on the elytra. The thorax has the posterior ridge 

 fairly well marked, curved. The punctuation on the underside of the body is fine ; 



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