2 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 76 



The species is A'ery close to A, nearctkus Cusliman; perhaps the 

 two are the same, but both the Texan specimens have the fourth 

 tergite broadly white margined and there are minor differences in 

 sculpture and venation. 



CRYPTUS PAITENSIS (Cockerell) (new combination) 



Amhljjtcles j)aitcnsis Cockebell, Entomologist, vol. 60, 1927, p. 158. 



The male holotype of this species has been presented by its author 

 to the National Museum and has been listed as Cat. No. 41588, 

 U.S.N.M. 



It differs from typical Cryptus Fabricius only in lacking the apical 

 carina of the propodeum, this being represented only by small apo- 

 physes, and in having the propodeum behind the basal carina coarsely 

 reticulate rugose. 



The same sort of variation occurs in the Neotropical genus Trachy- 

 sfhyrus Haliday, which is really distinguishable from Gryptus only 

 by the metallic blue, green, and copper colors exhibited by its species. 



CHROMOCRYPTUS MESORUFUS, new species 



Female. — Length 7.5 mm. Tips of antennae, right front tarsus, left 

 middle leg except coxa, and apical joints of both hind tarsi missing. 



Structurally much like the genotype, Ghroiyiocryptus planosae 

 (Fitch) with the sculpture perhaps a little coarser, but very distinct 

 in color. 



Head black with following white markings : Orbits except narrow 

 interruption in malar space, a sinuate mark across face, disk of 

 cl3^peus and of mandible, and an incomplete annulus occupying the 

 dorsal half of flagellar joints 7 to 9 and part of 6 and 10. Thorax 

 black with white as follows : Anterior and humeral margins of pro- 

 notum; lines in notauli; basal part of scutellum, emarginated by 

 anterior extension of apical black; postscutellum ; tegulae and radices; 

 spots on mesopleurum below both front and hind wings, along 

 prepectal suture and above middle coxae; a longitudinal mark below 

 sternaulus; apex of metapleurum; and two longitudinal marks on 

 posterior face of propodeum including the apophyses; front and 

 middle coxae and trochanters black and white, these legs otherwise 

 ferruginous with tarsi infuscate; hind leg ferruginous, knee and 

 apex of tibia infuscate, tarsus black with second and third joints and 

 apex of first below, white; wings hyaline with blackish venation. 

 Abdomen black with all tergites broadly margined with white, first 

 segment furruginous. 



Type locality. — Cuernavaca, Morelos, Mexico. 



Type.— C2it. No. 41990, U.S.N.M. 



One female reared by C. Chambert and received from Dr. Alfons 

 Dampf, chief entomologist of Mexico. The host record is open to 



