1882.] 'J"^! [Williston. 



posterior metatarsi, and tlirec last joints of all the tarsi brown ; Aviugs 

 hyaline. Long. corp. 10-11 mm. Two specimens. Washington Terri- 

 tory. 



I suspect that the male may also show^ in some degree the abdominal 

 marliings other than the spots on second segment, and that the coloration 

 of the legs may be variable. 



Criorrhina scitula, sp. nov. 



(^9. Face yellow, in profile Avith a well marked obtuse tubercle ; 

 cheeks black ; front in female black on upper three-fourths, with grayish- 

 red club and short black pile ; frontal triangle in male yellow^ ; eyes con- 

 tiguous for a longer distance than in analls, the antennal protuberance not 

 so great. Antennae yellowMsh-brown or blackish-brown, the second joint 

 sometimes yelloAV with black above, third joint ahvays of a lighter color 

 T)cloAv ; thorax black, shining, dorsum with blackish pile, yelloAvish on the 

 liorders ; humeri yelloAV with smaller confluent yellow pleural spots ; 

 raesopleurte gray pilose and pollinose ; scutellum black, the edge sometimes 

 narrowly luteous ; abdomen black ; second segment with two large yellow 

 spots rather narrowly separated, with rounded heads and narrowed 

 toward the margins ; third segment with a yellow cross-band on the 

 anterior margin, doubly conA^ex behind, the greatest convexity being 

 tow^ard the middle, wuth sharp median angular incision, and attenuated 

 nearly to a point on the sides of the abdomen ; fourth segment similar in 

 female, in male wholly black or Avith triangular spots on anterior margin 

 and reddish behind ; hypopygium red or yelloAv. Anterior coxfe Avhite 

 pollinose in front, femora black except the extreme tips, anterior and 

 middle tibise and metatarsi, yellow or reddish-yellow ; posterior tibiae 

 yellow at the base and tip ; terminal joints of anterior and middle tarsi 

 black ; posterior tarsi fuscous or black ; wings nearly hyaline, rather more 

 clouded toward the front. Long. corp. 11-13 mm. Eight specimens. 

 Washington Territory, Oregon. 



This species has the face in profile similar to that of Milesia notata 

 Wied. ("Genus novum" O. S. Catalog, p. 138) as figured by Mac- 

 quart. 



XIV. 



J J. — Small cross-vein beyond the middle of discal cell, oblique. 

 aa- — Antennae Avith a subterminal bristle or terminal style. 



s. — Third joint of antennae produced aboA^e into a long conical process, 

 inclined forward and terminating in the thickened arista ; abdomen 

 oval black, with three interrupted metallic cross-bands ; third longi- 

 tudinal-vein straight Merapioidus Bigot. 



Merapioidus villosus Bigot., Bui. Soc. Ent. Fr. 1879, p. 64. Georgia ! 



ss, — Antennae longer than the head, second and third joints SAvolleu, 



terminating in a short thickened style ; third longitudinal A'ein 



strongly angulated, emitting a stump of a A-ein into the first posterior 



cell Ceria, 



PKOC. AMER. PHILOS. SOC. XX. 113. 3p. PRINTED AUGUST 14, 1882. 



