Species of the American Genus A .stylus. 343 



c£. Anterior tarsi with joints 3 and 4 angulate, and 2 

 obliquely dentate, at the inner apical angle. Ventral 

 segment 5 broadly, deeply emarginate. Terminal segment 

 long, tubulate, narrowing from the base, cleft beneath. 

 Tegmen narrowly cleft for a short distance at the apex, 

 which is fringed with long hairs. Penis-sheath narrowed 

 and somewhat acuminate at the tip. 



? . Ventral segment 6 short, undivided, feebly notched at 

 the apex. 



Hab. Brazil, Rio de Janeiro, Santa Catharina, Sao Paulo, 

 Rio Grande, &c. ; PARAGUAY, Sapucay (IF. Foster); 

 Argentina, Corrientes {sec. Blanchard). 



Of the twenty-five specimens before me, females pre- 

 ponderating, five belong to the smaller form with a relatively 

 narrow prothorax in both sexes, this latter corresponding to the 

 D. jlavofasciatus of Blanchard, from Corrientes, Rio Grande, 

 Sapucay, &c. A male of each has been dissected, and the 

 armature proves to be precisely similar. The broad, com- 

 plete, submedian flavous fascia on the elytra separates 

 A. antis from A. sphndidus. The prothorax and the base 

 of the elytra are thickly set with long, erect or projecting, 

 black hairs in both of them. The length varies from 

 10-16 mm. 



6. Astylus sphndidus. 



Dasytes splendidus, Cast. Ann. Soc. Ent. Fr. 1832, p. 398 ; Hist. Nat. 

 Coleopt. i. p. 280. 



Hab. Brazil [Mus. Oxon.), Rio de Janeiro {Fry). 



This is a large very brilliantly coloured form of A. antis 

 with the flavous markings on the elytra reduced to an oblique 

 subapical fascia on the outer part of the disc; the fascia, 

 however in one of the five examples seen (2 J $ , o ? ?) 

 reaches the suture and is continued along it for a short 

 distance forward. The <J characters are similar to those of 

 A. antisj and the two insects are certainly nothing more than 

 forms of one species. Both occur at Rio de Janeiro, where 

 also the smaller and narrower A. Jlavofasciatus, Blanch., has 

 been found. 



7. Astylus aulicus. 



Astylus aulicus, Dej. Cut. 3rd edit. p. 123 (1837) ; Pic, Bull. Soc. Ent. 

 Fr. 1908, pp. 328, 329. 



S . Ventral segment 5 broadly, semicircularly emarginate 

 6 about as long as 5, undivided, with a narrow, deep, triangular 



