82 Mr. r. Smith on some new Genera and Siucles 



insertion of the antennae, the yellow colouring extending obliquely 

 upwards on each side ; a yellow spot in front of the ocelli, and two ob- 

 lique stripes behind them ; the mandibles with their tips black ; the 

 antenniB fidvous beneath and rufo-fuscous above. Thorax : the pectus, 

 the mesothorax, and base of the metathorax above, black ; the meso- 

 thorax with two longitudinal yellow lines, which also cross the sides 

 of the scutellum ; a line over the tegulse, the post-scuteUum and two 

 oblique lines beneath it, yellow ; a black line do-svn the centre of the 

 metathorax; the wings flavo-hyaliue, the nervures pale ferruginous, 

 and a yellow spot on the tegulse. The abdomen petiolated, entirely 

 yellow, and very smooth and shining. 



This is a fine addition to the division of the genus PhUanthus 

 which has the abdomen petiolated, of which Klug has formed the 

 genns Tmcliypus ; but having hitherto adopted the neuration of the 

 wings as the primary character of generic subdivision, I use Klug's 

 name merely as a sectional one. This insect was discovered by 

 Mr. H, W. Bates at St. Paul, Brazil. Seven species of the petiolated 

 PhilantJd are now known. 



APID^. 



Family Cuculinse, Latr. 



Genus Nomada, Fahr. 



1. Nomada advena. 



N. atra ; antennis basi ferrugineis ; capite antice, thorace abdomineque 

 flavo-variegatis ; alis hyalinis, maculis anticis fuscis ; pedibus ferrugi- 

 neis, maculis flavis. 



Female. Length 4 lines. Black, smooth and shining; the face 

 yellow ; the scape and tips of the mandibles feiTuginous. Thorax : a 

 spot on each side of the collar, the tubercles, a large iiTegidar-shaped 

 spot beneath the wings, tlie scutellum and a minute spot at its anterior 

 angles, the post-scutellum and the sides of the metathorax, yellow ; the 

 legs ferruginous ; the anterior and iutennediate tibial, the posterior pair 

 outside, the basal joint of the posterior tarsi beneath, the posterior coxae 

 beneath, and four spots on the pectus, yellow ; ■ndngs hyaline, with a 

 dark fuscous stain on the margin of the anterior pair beyond the stigma, 

 the posterior pair slightlj^ stained at their apex. Abdomen : a yellow 

 fascia on the first, second and fourth segments, that on the second wide 

 at the lateral margins of the abdomen, and abruptly narrowed in the 

 middle, where it is slightly interrupted ; beneath, the second and third 

 segments have a transverse yellow fascia in the middle. 

 Hab. Chili, or Columbia. 



