252 HYMENOPTERA. 



Genus 24. LEIOPODUS. 

 F. Smith's MSS. 



The labial palpi 4-jointed, the two basal ones elongate, filiform, 

 of about equal length, the third and fourth minute, inserted at 

 the side of the second, near its apex. The maxillary palpi 

 4-jointed, the basal joint short and stout, the second more slender, 

 twice the length of the basal one ; the third rather shorter than 

 the second, the apical one minute. The ocelli placed in a curve 

 on the vertex. The thorax rounded, wider than the head ; the 

 superior wings having one marginal and three submarginal cells ; 

 the first submarginal cell oblique-quadrate, the second wider 

 than the first and narrowed towards the marginal, receiving the 

 first recurrent nervure near the apex; the third submarginal 

 narrower than the second and slightly narrowed towards the 

 marginal. Abdomen elongate, conical. The legs simple, the 

 claws simple. 



The general habit of this genus is that of an Epeolus. 



1. LEIOPODUS LACERTINUS. 



Female. Length 4^ lines. Black, the pubescence on the face 

 of a glittering yellowish-white, most sparing on the clypeus and 

 the region of the ocelli ; the labrum subquadrate, rounded at the 

 anterior angles, deeply punctured and thinly sprinkled with 

 similar pubescence to that on the face ; the antennae filiform, the 

 apical joint compressed, obtuse at the apex. Thorax having a 

 deep longitudinal depression, which passes over the scutellum ; 

 the depression broadest anteriorly ; another depression on each 

 side ; the pubescence on the thorax anteriorly yellowish-white, 

 posteriorly and beneath it is nearly white ; the legs red, mottled 

 with a white glittering pile, the tarsi fuscous ; the wings sub- 

 hyaline, irregularly stained with fuscous, the apical margins 

 clouded, darkest beyond the marginal cell along the margin. 

 Abdomen conical, the basal segment having on each side a stripe 

 of white pubescence which is recurved upwards at the extreme 

 lateral margins, the second and following segments have a line 

 of white pubescence along their basal margins which recurve 

 downwards and are produced inwardly a little way along the 

 apical margins ; beneath, covered with a similar white pile, the 

 second and third segments having each two round denuded spots, 

 the basal and apical segments naked. 



The male exactly resembles the female, differing only in having 

 an additional segment to the antennae and abdomen. 



The pubescence of this insect is most beautifully plumose or 

 feathered. 

 Hob, South America. (Coll. W. W. Saunders, Esq.) 



