21 



A NEW GENUS AND SPECIES OF LARRID^ FROM 

 CENTRAL AMERICA. 



By p. Cameron. 



On bringing together recently, for the purpose of study, my 

 neo-tropical specimens of Odynerus nasidens and allies, I found 

 among them a species of Larridse which agreed almost exactly 

 with O. nasidens, having the same size, golden pubescence, wing- 

 coloration, and form. It belongs to the Lyrodinse, and comes 

 closest to Heliocausus, which may be known from it by the 

 transverse median nervure being received behind the transverse 

 basal, by the cubitus in hind wings being received much behind 

 the median, by the recurrent nervures being widely separated, 

 he first behind the middle, and by the eyes converging above. 



IcuMA, gen. nov. 

 Eyes parallel, not converging above, reaching to the base of the 

 mandibles. Ocelli in a triangle. Clypeus short, its apex broadly 

 rounded. Mandibles not incised below, the apical tooth long. Temples 

 broad, obliquely narrowed ; the occiput transverse. Pronotum very 

 short. Scutellums large. Median segment short, gradually rounded, 

 the basal area large, closely striated. Tibiae and tarsi spined, the fore 

 tarsi ciliated with long stout spines on the outer side ; claws long, 

 curved, without a spine. Abdomen short, ovate ; the pygidial area 

 distinct. Antennae short, placed close to, but clearly separated from, 

 the clypeus. Eadial cellule long, its apex narrowed, but bluntly 

 pointed ; the transverse median nervure received clearly beyond the 

 transverse basal ; the recurrent nervures are received in the apical 

 third of the second cubital cellule ; the cubitus in hind wings origin- 

 ating shortly beyond the transverse median. 



ICUMA SERICEA, Sp. UOV. 



Black, covered densely with a pale golden pile ; the under side of 

 scape, an irregular line across the middle of the clypeus, a line on the 

 lower half of the inner orbits on the apex of the pronotum, a narrow 

 one on the second abdominal segment, more than the apical half of 

 the third, and the whole of the other segments, fulvous yellow. Legs 

 black, a line on the under side of the femora, on the under side of the 

 tibife, and on the posterior at the basal half behind, fulvous yellow. 

 Wings fulvous hyaline, clearer at the apex, the radial cellule and the 

 basal two cubitals smoky ; stigma and costa fulvous, the nervures 

 darker. ? . Length, 12 mm. 



Panama, Pacific side. 



Head with scattered punctures, the face and clypeus more shining 

 than the rest. Thorax distinctly but not closely punctured, the meta- 

 notum more strongly than the rest ; the stride on the basal area 

 distinct, rather stout, clearly separated. Abdomen, except the pygidial 

 area, almost impunctate ; the area with longisb, clearly separated 



