no. 1644. REVISION OF CECOPHORID MOTHS— BUSCK. 205 



7 is obsolete; veins 6 and 7 parallel; 5 radial, nearest to 6; 3 and 4 

 connate. 



Type. — Tamarrha niveosella Walker. 



The genus Bdbaiaxa Busck (type. <l<IJi<lla Fernald) is a synonym 

 of Tamarrha, as shown by the writer." 



My friend Mr. Meyrick has all along- contended that the peculiar 

 aberrant structure of the venation in the hindwing is of slight im- 

 portance generically and he considers the present genus synony- 

 mous with E flint hi. Having found a similar cross- vein in the males 

 of some of the South American Stenomidap, where it is plainly the 

 normal subcostal cross-vein, found in the family Gelechiidse, connect- 

 ing veins 7 and 8, which has been pushed outwards in order to 

 strengthen the costal region, which is widened on account of a large 

 hair pencil, I am inclined to accept Mr. Meyrick's view, the more so 

 as some apparently typical species of the genus Ethmia (hilarella 

 Zeller, funerella Fabricius) possess a similar cross-vein. This vein is 

 thus to be explained as the persisting cross-vein, modified on account 

 of a hair tuft, which itself may not have persisted. In this connection 

 it is significant that the type of Tamarrha and some other species of 

 the genus have a costal tuft on the hindwings. 



There is, however, no difficulty in the North American fauna in 

 keeping the genus Tamarrha distinct from Ethmia, and I prefer to 

 do so for the present. 



The presence of the cross-vein mentioned above, together with the 

 relationship of vein 5 of the hindwings to the radial system of the 

 neuration, indicates that further study of these two genera, on which 

 I am now engaged at Merton Hall, may justify the erection of a new 

 family for their reception. 



The following North American species are referable to this genus: 



delliella Fernald, Dyar List x. Am. Lep., No. 5935. 

 bittenella Busck, Proc. U. S. Nat. Mus., XXX, 1906, p. 730. 



TAMARRHA DELLIELLA (Fernald). 



I am glad to be able to record the food plant of this beautiful 

 species. It was bred by Mr. J. I). Mitchell at Victoria, Texas, from 

 Ehn tia elliptica de Candolle. Adult issued August 7, 1007. 



The food plant belongs to the family Boraginacese, to which the 

 genus Ethmia is normally partial. 



21. Genus ETHMIA Hiibner. 



Ethmia Hubner, Verzeichniss bekannter Sehmetterlinge, 1818, p. 163. 

 Labial palpi moderately long, second joint thickened with smoothly 

 appressed scales or with a more or less developed rough tuft; ter- 



° Proc. U. S. Nat. Mus., XXX, 1900, p. 728. 



