NEW SPIDER WASPS — DREISBACH 151 



10. Sides of thorax black, only the dorsum of thorax with a dull greenish color; 



upper interocular distance equal to the lower (12) ; parameres of genitalia 

 rather small acute at apex; the cross-ridge about middle of paramere located 

 just opposite the apex of volsellae; smaller, length 8.0 mm. Honduras. 



Figs. 10, 11 40. clypeatus, new species 



Sides of thorax with some green color mostly in the grooves; upper interocular 

 distance greater than the lower in ratio of 22:20; parameres of genitalia 

 very large (largest of the genus when compared to rest of genitaUa), obtuse 

 at apex; the cross-ridge about the middle of parameres located well above 

 apex of volsellae; larger, length 11.9 mm. Yucatan. Figs. 30, 31. 



47. gaumeri, new species 



11. Face with a dense golden pubescence; body black; clypeus transverse, widely 



emarginate in front; head with long thin black pubescence; thorax thinly 

 covered with black pubescence; tips of anterior femora in front, tibiae in 

 front and their apex reddish; wings flavohyaline, their apical margins 

 faintly clouded; a fuscous fascia in fore wings at base of marginal cell; 

 abdomen subpetiolate, black with an obscure blue tinge, apex -nith short 

 black pubescence; length 8 mm. Mexico .... montezumus (Smith) 

 Face without dense golden pile 12 



12. All legs black 13 



At least some of legs yellow or rufous 15 



13. Head and thorax black, sometimes showing bluish reflections especially on 



abdomen; parameres of genitalia with apical half very broad and heavy; 



the subgenital plate without a raised flat triangular area at base, the very 



sharp elevated ridges start at base. Jamaica. Figs. 4, 5. . bruesi (Banks) 



Head and thorax not both black, abdomen black 14 



14. Head and thorax both bright shining blue; parameres and subgenital plate 



similar to bruesi; antennae black. Cuba. Figs. 36, 37 . bellus (Cresson) 

 Head black; thorax with basal 0.75 of propodeum greenish, apical 0.25 black 

 with rather dense, prostrate, white pubescence; some parts of dorsum of 

 thorax and sides with streaks of greenish; length 10.5 mm. Mexico. 

 Figs. 28, 29 46. vulcanensis, new species 



15. Clypeus and face all white, or white on sides and a brown longitudinal streak 



in middle covering one-third or less of width, or with only outer edges 



white 16 



Clypeus generally without any white, all black; face black or black with 

 their anterior orbits white 21 



16. Head and thorax a dull-green color with purple reflection; abdomen black 



with a white spot on seventh tergite, and third tergite may be reddish . 17 

 Head thorax and abdomen black with hardly any noticeable reflection . 19 



17. Clypeus and face with only the outer edges white; apex of clypeus without a 



transparent rim; the white on face does not reach antennae, on the sides 

 the space below antennae black; antennae black except the first joint 

 below is yellowish; all coxae and trochanters are black, abdomen black, 

 except third tergite is reddish and seventh tergite has a white spot in 

 middle ; parameres of genitalia without a cross-ridge about middle opposite 

 apex of volsellae; the parameres narrower and more acute at apex; basal 

 triangle of subgenital plate closed at middle; length 6.6 mm. Mexico. 



Figs. 38, 39 45. amoenus, new species 



Clypeus with the outer two-thirds white, the middle third with a brown stripe, 

 or the brown stripe almost evanescent, only visible in certain reflected 

 light; the face white on sides, the white color reaching antennae on the 

 sides; in one case and almost so in the other case; at least the forecoxae 



