Species of the American Genus Asfylus. 357 



27. Asli/his (puidrilineatus. 



Dasytes quadrilineatus, Germ. Ins. Spec. nov. p. 76 (1825) ' ; Hlanch. 

 in Voyage d'Orbigny, p. 98 2 ; Cast, Hist. Nat. Col. i. p. 281 3 . 



<$ . Antennas wholly or in part rufo-testaceous, moderately 

 long, considerably longer than in $ . Elytra more or less 

 sinuate at the tip, and with the sutural angles almost as 

 acute as in ? . Ventral segment 5 deeply arcuato-emarginate, 

 6 barely as long as 5, subcorneal, feebly notched at tip. 

 Tegmen more or less emarginate or bilobed, and clothed with 

 long blackish hairs at apex. Penis-sheath gradually nar- 

 rowed or acuminate at tip. 



? . Ventral segment 5 feebly emarginate, 6 short. 



Hub. Brazil 1 *, Santa Catbariua (ex coll. Fry : $ ), Rio 

 Grande ; URUGUAY, Maldonado 3 , Monte Video (C. Darwin) ; 

 Argentina (0. IT. Thomas), Santa Fe and Bahia Blanca 

 (C Darwin), Buenos Ayres 3 ; PATAGONIA 2 . 



A variable insect, if the specimens before me all belong to 

 one species. The reddish or flavesceut marginal and dis- 

 coidal vittse of the elytra are sometimes coalescent at the 

 tip and the discoidal one may be reduced to a narrow incom- 

 plete line. Four males have been dissected, showing some 

 variation in the form of the tegmen, which in a large example 

 from Buenos Ayrcs has a short lobe on each side at tip. 

 Two small males from Monte Video, with the sutural angles 

 of the elytra obtuse and the tegmen rounded at apex, may 

 belong to a different species? The length varies from 

 6—9 mm. The general colour may be bluish-green, green, 

 nigro-cseraleous, or brassy. 



28. Astylus correptus, sp. n. 



Elongate, moderately broad, shining, nigro-pilose, with 

 short, adpressed, cinereous hairs intermixed ; black, the 

 elytra (the humeri, basal portion of the suture, and apical 

 margin excepted) brown ; closely, minutely, the elytra finely, 

 irregularly punctate. Head hollowed on each side anteriorly ; 

 antennas strongly serrate, short in ?,a little longer in <$ . 

 Prothorax broader than long, narrowed anteriorly in both 

 sexes, hollowed in the middle at the base. Elytra long, 

 costate laterally to near the apex, and obsoletely bicostate on 

 the disc ; in <$ somewhat rounded at the sides, and with the 

 apical portion narrow and considerably produced ; in ? sub- 

 parallel to near the tip, and with the humeri much swollen. 



cJ. Anterior tarsi with joints 2 and 3 obliquely dentate 

 and 4 augulate, and the intermediate tarsi with joint 3 



