476 SEKKICOENIA. 



Group CORYMBITINI. 



COPYMBITES. 



Ludius, Eschscholtz, in Thon's Archiv, ii. 1, p. 34 (1829) (nee Latreille). 



Corymbites, Latreille, Ann. Soc. Ent. Er. 1834, p. 150; Leconte, Trans. Am. Phil. Soc. new ser. 

 x. p. 435 ; Candeze, Monogr. Elat. iv. p. 77. 

 A single species from Yucatan is somewhat doubtfully referred to this well-known 

 genus, which contains a very large number of representatives in the Palsearctic and 

 Nearctic Eegions. It is unnecessary to give here the extensive synonymy, or to enter 

 into the argument as to whether the name Ludius or Corymbites should be adopted 

 for it *. 



1. Corymbites pilatei. (Tab. XXI. fig. 2.) 



Comparatively short, rather narrow, moderately shining ; reddish-brown, rufo-ferruginous beneath, the legs 

 and antennae testaceous ; above and beneath somewhat thickly clothed with very fine, short, fulvous 

 pubescence. Head thickly, finely punctate, triangularly depressed in front; antennae short, scarcely 

 reaching the hind angles of the prothorax, joints 2 and 3 short, exactly equal in length, the following 

 joints wider and feebly serrate, 4 about twice as long as 3. Prothorax as broad as long, the sides a little 

 rounded and gradually converging anteriorly and feebly sinuate behind ; the hind angles long and acute, 

 slightly divergent, sharply carinate, the carina extending for some distance forwards ; the surface densely, 

 finely punctate, obsoletely canaliculate along the middle. Elytra two and one-half times the length of 

 the prothorax, and of about the same width, gradually narrowing from the middle, and rounded at the 

 apex ; finely punctate-striate, the interstices slightly convex at the sides, flat on the disc, and thickly 

 punctured. Beneath finely and somewhat closely punctate. Posterior coxal plates becoming very narrow 

 outwards, moderately widened inwards. 



Length 8, breadth 2| millim. 



Ilab. Mexico, Yucatan (coll. Janson). 



One specimen, no doubt a female, in the Janson collection, labelled with the MS. 

 name Oqphorus castaneus, Pilate. This insect somewhat resembles the North-American 

 C. divaricatus, Lee, but differs from it in the short third joint of the antennae, &c. 

 C. pilatei belongs to Sect. IV. of Dr. Candeze's 'Catalogue Methodique.' The insect 

 is unknown to him. It is not impossible that there is some mistake as to the locality. 



Group DIMINI. 



ANTHRACOPTERYX. 



Anthracopteryx, Horn, Trans. Am. Ent. Soc. xviii. p. 30, t. 1. fig. 7 (max. palpus) (1891). 



1. Anthracopteryx mexicanus. (Tab. XXL fig. 4, j .) 



Elongate, rather broad, flattened above, shining ; black, the elytra brownish-black, the metasternum and 

 abdomen pitch y-brown, the antennse and legs brownish ; the upper surface very sparsely clothed with 

 long, fine, semierect, fuscous hairs, the under surface sparsely and finely pubescent. Head rather sparsely, 



* Cf. Buysson, Eaune Gallo-Rhenane, Elat. p. 73 (1894). 



