18(35.] 



26.') 



what iridescent; nervures black; areolet 5-angular. or subtriangular. 

 Legs long, black ; the femora tinged with fuscous ; the tibiae yellowish- 

 fuscous, the anterior pair palest ; all the tarsi yellow, the posterior pair 

 dusky at base. Abdomen black ; the basal segment depressed, strongly 

 arcuated, bilineated and punctured ; apical segments smooth and shin- 

 ing. Length 6 lines; expanse of wings 10 J lines. 

 One specimen. 



Genus CRYPTUS, Fabr. 



1. Cryptus robustus, Cresson. 



Cryptus robustus, Cresson, Proc. Ent. Soe. Philad. iii, p. 289. 



Ten 9 specimens. This fine species varies by the basal joint of the 

 antennae being sometimes entirely black, by the wings being sometimes 

 fuscous with a violaceous reflection, and by the apex of the abdomen 

 being often more or less varied with bright rufous. I omitted to men- 

 tion, in the description of this species, that the second, third and fourth 

 joints of the four anterior tarsi are short, triangular, dilated and spinose, 

 which seems to be an important character of this species. 



2. Cryptus proximus, Cresson. 



Cryptus proximus, Cresson, Proc. Ent. Soc. Philad. iii, p. 290. 



Two 9 specimens. One specimen has the wings varied with fuscous, 

 while those of the other specimen are uniformly fuliginous. The tarsi 

 are slender and simple. 



3. Cryptus luctuosus. Cresson. 



Cryptus luctuosus, Cresson, Proc. Ent. Soc. Philad. iii, p. 290. 



One $ specimen. 



4. Cryptus nubilipenais, Cresson. 



Cryptus nubilipennis, Cresson, Proc. Ent. Soc. Philad. iii, p. 291. 



One 9 specimen. 



5. Cryptus crassicornis, Cresson. 



Cryptus crassicornis, Cresson, Proc. Ent. Soc. Philad. iii, p. 292. 

 Six % specimens. This may be the male of 0. robustus. 



6. Cryptus excelsus, Cresson. 



Cryptus excelsus, Cresson, Proc. Ent. Soc. Philad. iii, p. 293. 

 Six 9 , one S , specimens. 



7. Cryptus ultimus, Cresson. 



Cryptus ultimus, Cresson. Proc. Ent. Soc. Philad. iii, p. 305. 

 One 9 specimen 



Genus PHYGADETJON, Grav. 

 Phygadeuon montanus, Cresson. 



Phygadeuon montanus, Cresson, Proc. Ent. Soc. Philad. iii. p. 309. 

 One 9 specimen. 



