192 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 50. 



Frontovertex and face rather coarsely, hexagonally punctato- 

 reticulate, with the sculpture delicately impressed; the cheeks, 

 postorbital region and occiput nearly smooth; the mesoscutum micro- 

 scopically reticulate, the axillae and scutellum with a similar but 

 much coarser reticulation; pleura rather coarsely reticulate, with 

 the aciculations mainly continuous and longitudinal, the prei^ectal 

 plates, however, scaly-reticulate; abdomen uniformly reticulate 

 except at the apex, and across the base of the first tergite, the retic- 

 ulations of about the same size as those of the scutellum but more 

 delicately impressed. 



Pubescence on face and mesoscutum very fine, rather scattered, 

 whitish in color but not conspicuou:^ ; the motapleura concealed by a 

 dense, approssed, silvery white pubescence, the hind coxae with a few 

 scattered hairs of the same character. 



Male. — ^Accorduig to Girault's description of abnonnicornis the 

 male is similar structurally, except that the antennae are less clavate, 

 with the funicle fdiform, the last five joints ])eing subequal and all a 

 half longer tiian vvide. 



Type of genus. — Brethesia latifrons, new species. 



1. BRETHESIA LATIFRONS, new species. 



Plate 40, fig. 14. 



Femole.— Length of body, (1.08 to) 1.21; length of head, 0.45; 

 width of head, 0.39; width of vertex, 0.192; length of eye, 0.244; 

 width of eye, 0.176; length of antenna, 0.705; width of mesoscutum, 

 0.415; length of forewing, 0.11 ; width of forewing, 0.42 mm. 



Frontovertex and mesoscutum ochraceous orange (R.), the face, 

 cheeks, occiput, and anterior half of underparts of thorax mustard 

 yellow (R.); most of pronotum similar but suffused with pale brown- 

 ish; axillae and scutellum with an ochraceous orange ground color but 

 suffused v/ith brownish, the apical half of the scutellum becoming 

 still darker brown; metanotum, propodeum, and posterior half of the 

 mesopleura chestnut b^o^\^l (R.) but appearing more blackish in 

 some lights ; tegulae mustard yellow with the apical margin slightly 

 brownish; dorsum of abdomen rather shiny black, v/ith most of the 

 first tei^ite primuline yellow (R.), a minute dot behmd the tactile 

 plates and another at the apex ochraceous orange; venter mostly 

 ochraceous orange but paler medially tov/ard the base, and invaded 

 b}^ the black of the dorsum hi two areas on each side, the first pair 

 just before the tactile plates and well separated medially, the second 

 pair just before the apex and nearly meetmg, the black marks on 

 each side bemg narrowly separated l)y the ochraceous orange, the 

 extension of which produces the dot on the dorsum behind the tactile 

 plates. Antennae nearly concolorous with the face or slightly paler. 

 Legs mustartl yellow v> ith the front tibiae on their upper surface and 



