126 Mr. G. C. Champion's Revision of the Mexican 



3. Melyrodes serricauda, n. sp. 



Elongate, narrow, the head and prothorax opaque, the elytra 

 feebly shining ; nigro-piceous, the elytra dark brown, the antennal 

 joints 1^ (except the upper side of 1), the extreme base of the 

 tibiae, and the tarsi testaceous; clothed with very fine, short, 

 decumbent, fuscous pubescence. Head densely, shallowly, rugosely 

 punctate ; antennae short, joints 3 and 4 very small, 5-10 strongly 

 transverse, about equal in width, 5-7 triangular, 8-10 shorter, 

 1 1 ovate, narrower than 10. Prothorax strongly transverse, rounded 

 at the sides posteriorly, narrowed in front, the anterior margin 

 reflexed, the hind angles distinct, the lateral margins closely crenu- 

 late or serrulate; densely, shallowly, rugosely punctate. Elytra 

 long, a little wider than the prothorax, subparallel or gradually 

 widened posteriorly ; very coarsely, densely, subseriately, punctate, 

 and distinctly bi- or tricostate, the suture also raised ; the explanate 

 epipleural margin becoming wider at the apex and dehiscent at the 

 sutural angle, its inner inferior margin sharply and closely serrate 

 from about the apical third to the suture, the teeth at the apex 

 projecting beyond the upper (outer) epipleural margin, the apex 

 itself rather narrow. 



Length 2 mm. 



Hah. Panama, Tole (Champion). 



Two specimens, found on flowers on the open savanna, 

 in January, 1883. Gorham, apparently, by some oversight, 

 included these examples under his M. perforata, though 

 he labelled one of them M. crenata. The form of the apex 

 of the elytra is suggestive of that of various Hispidae. In 

 one example there is a well-defined submarginal ridge 

 on the elytra, in addition to the two others on the disc. 

 The Guatemalan M. crenata has the antennal joints 5-10 

 much less transverse, and the elytra broader, less ex- 

 planate and almost conjointly rounded at the apex, and 

 the costae wholly wanting ; M. perforata, from San Lorenzo, 

 Panama, has the elytra shining, • still more coarsely, con- 

 fusedly punctate, without trace of costae (the stout sutural 

 ridge excepted), and the inner inferior epipleural margin 

 non-serrate. M. cupripennis, Pic, has brilliant cupreous 

 elytra. 



4. Melyrodes cupripennis. 

 Melyrodes cupripennis, Pic, Le NaturaUste, 1898, p. 273. 

 " Peu allong6, a peine pubescent, noir presque mat sur la tete et 



