<;i(i TKRTIARY IXSIOCTS OK NORTH AMERICA. 



circular masses, the hinder slightly the larger ; the abdomen is much 

 broken, but evidently larger than the thorax and pretty plump ; no append- 

 ages are preserved. 



Length of body, 3.3"""; diameter of head. 0.4"""; length of thorax, 

 1.2"" 11 ; width of same, 0.7. r >" ini : length of peduncle, 0.-Jf>""" ; diameter of 

 anterior joint of same, 0.1"; width of abdomen, 0.85"""; its probable 

 length, 1.8""". 



Green River, Wyoming. One specimen, No. 53 (F. C. A. Rich- 

 ardson). 



Family FORMICID^: Stephens. 

 HYl'OCLINEA Mayr. 



II YI'OCLINEA OBLITKRATA. 

 I'l. 3, Figs. 23, L'. 



Hi/poclinea oWlerata Scudd., Kep. Progr. Geol. Ceogr. Surv. Can., 1*75-1*7!',, at!" (1877). 



There are two specimens to be referred to Hypoclinia, and both are 

 very fragmentary. One (No. X) consists of the partial remains of the wings 

 of one side overlapping; the other (No. 14) of similar remains, but so faintly 

 impressed on the stone that some of the veins can not be traced at all, and 

 since in all essential features it agrees with the more distinct fragments, I 

 have considered it as belonging to the same species, although it is of slightly 

 greater size. 



The essential portions of the fore wing remain, showing the neuration 

 to be that of Hypoclinia; the second cubital cell is triangular, and the vein 

 which marks its outer limit arises from the upper branch of the cubital vein 

 a little beyond the cross- vein depending- from the stigma ; the discoidal cell 

 is of about the same size as the second cubital cell, and is subquadrate, the 

 vein marking its outer margin a little curved, and the apex of the cell itself 

 separated by but a short, space from the base of the second cubital cell. 

 The scapular vein is more darkly colored than the others, and a faint fuligi- 

 nous cloud appears to surround the rather dark stigma. 



Length of fragment of wing, 5 mm : distance from base of wing to tip of 

 stigma, 4""". 



Quesnel, British Columbia. Two specimens, Nos. !S, 14 (Dr. (4. M. 

 Dawson, Geological Survey of Canada). 



