INSECUTOR INSCITI/Ti MKNSTRUUS 167 



Argyrochaetona, new genus. 



Genotype, Argyrochaetona ciibaua^ new species. 



Clypeus well depressed. Epistoma full width, cut off short. 

 Palpi short, much broadened and flattened apically. Eyes bare, 

 descending nearly to lower border of head. Male vertex less 

 than half eye, parafrontalia meeting over frontalia in middle. 

 Frontals descending one bristle below base of antennae. Para- 

 facialia very narrow, bare. Male with two very strong fronto- 

 orbitals, the anterior one reclinate ; and one or two weak rec- 

 linate ones behind. Ocellars very weak. Preacrosticha'.s pres- 

 ent. Apical cell open considerably before tip. First two ab- 

 dominal segments with a median marginal pair, that of first 

 weak ; last two segments with marginal row. 



Argyrochaetona cubana, new species. 



Length, (> mm. One male, Santiago de las Vegas, Cuba (P. 

 Cardin). 



Face and front silvery-white. Frontalia brown. Antennje 

 blackish, second joint and base of third pale rufous. Palpi 

 fulvous. Mesoscutum, scutellum and abdomen pale golden 

 poUinose over black, leaving four vitt?e on first ; all of first 

 abdominal segment and broad hind borders of other segments 

 black. Legs brown. Tegul?e watery-whitish. Wings clear. 



Orthaporia, new genus. 



Genotype, Orthaporia similis, new species. 



Chaetotaxy and venation of Paraporia. Abdomen greatly 

 elongated, much longer than wings ; five segments visible from 

 above in male, the first half as long as the second, the third 

 and fourth equal in length and much longer than the second 

 and fifth, the last scarcely caudate. Clypeus flush with face. 

 Frontals stopping at base of antennae. 



Orthaporia similis, new species. 



Length, 21 mm. One male, Rio Janeiro, Brazil, November 

 (H. H. Smith). 



Chestnut-brown, thinly silvery pollinose. Palpi and base 

 of third antennal joint fulvous. Four thoracic vittae, the inner 



