AMERICAN HYMENOrTERA. 135 



Genus PARAPOMPILUS, Bmith. 

 Micropteryx, St. Farg., Hym. Hi, p. 396, (nee Hi'ibner). 



Mr. Smith says {Brit. Mas. Oaf. Ifj/m. iii, p. 176,) that tliis '• genus 

 is characterized by having the head compressed, the face forming an 

 oblique plane, the autenna3 inserted in deep fossulets on the anterior 

 part of the face; the prothorax longer than in the true Pompilus, the 

 metathoras elongate; the wings inserted about the middle of the tho- 

 rax, the anterior pair having one marginal and three submarginalcells. 

 Abdomen vsessile." 



Three species are described from Africa, all of which have abbrevi- 

 ated wings, and one from St. Domingo, the wings of which are also 

 short, reaching only to the tip of the second abdominal segment. I 

 have, provisionally, placed under the genus Pompilus four species (pur- 

 piiripeiinis, Marise, legatus and elegnns,') all of which may properly be- 

 long to this genus ; but none of them have abbreviated wings. 



Parapompilus Naomi. 



I'arapompiius Naovii, Smith, Brit. Mus. Cat. Hym. iii, p. 177, $•• 

 '■'■Femalf. Length 4 — 6 lines. — Black ; the anterior legs, pro- and 

 mesothorax covered with a very short, black, velvety pubescence, which 

 in certain lights has a rich purple iridescence; the second segment of 

 the abdomen has a similar clothing, the third segment has two oblique 

 stripes meeting about the middle of the segment ; the other parts of 

 the insect, including the legs, densely coated with very short white pu- 

 bescence; the metathorax has on each side of its disk a longitudinal 

 waved carina, extending from the base to the apex ; the anterior wings 

 hyaline, with a broad, dark, fuscous cloud crossing from the marginal 

 cell, being of the same width as that cell, and leaving the apex clear; 

 the wings extending to the apical margin of the second submarginal 

 segment." 



Hub. — "St. Domingo." Not seen. 



Genus PLANICEPS, Latr. 

 Head transversely compressed, wider than the thorax, front flat ; 

 antenuoe short and stout, more or less convolute iu the 9 ; straight and 

 thickened in the % ; inserted in fossulets just above the base of the 

 clypeus. Thorax elongate, the prothorax large, subquadrate, flattened 

 Figure 13^^__^_^ above in $ ; mesothorax and scutellum also flat- 

 /tened in 9 ; metathorax moderately short. ^Y'm(Js 

 inserted in the middle at the sides of the thorax; 

 the anterior pair (Fig. 13) with one marginal and two submarginal 

 cells; the marginal cell small, sublanceolate ; the first submarginal 



