MAY, 1860. 125 



beginning of the cilia. In the apical portion of the wing is 

 a silvery streak, dark-margined on both sides behind, point- 

 ing into the costal cilia above the apex. The costa, from the 

 trapezoidal patch to the tip, is touched with dark brown; 

 cilia dark brown; beneath the apex varied with silvery on 

 the base of the cilia. Hind-wings dark brownish. 



TRYPANISMA. 



Fore-wings ovate -lanceolate. The discoidal cell is rather 

 narrow and elongately oval. The subcostal nervure sends 

 three nervules to the costa, the last from the end of the cell, 

 together with the apical branch, which curves at its origin 

 to send off a very short and faint discal nervure, and at its 

 middle gives rise to a costal' branch, becomes furcate behind 

 the tip and delivers a branch above and one below the tip. 

 The median is three-branched, the middle branch being bifid. 

 Submedian furcate at the base. Hind-wings narrower than 

 the fore-wings, with an intercostal cell at the base; apex 

 produced, deeply emarginate on hind margin and anal angle 

 rounded. The costa is slightly emarginate in the middle. 

 The discoidal cell broad, and closed by a very faint nervure 

 from the middle of the subcostal, which is furcate near the 

 tip. The discal nervule arises near the median, which is 

 three-branched, with branches rather approximated. 



Size small. Head smooth, with appressed scales. Fore- 

 head and face rounded and rather broad. Ocelli none. 

 Eyes oval, moderately prominent. Labial palpi moderate, 

 arched; middle joint slightly thickened with scales beneath, 

 terminal as long as the second, smooth, pointed and tapering 

 from the middle. Maxillary palpi not perceptible. An- 

 tennae slender and simple ; about one-half as long as the fore- 

 wings; basal joint subclavate. Tongue scarcely so long as 

 the labial palpi. 



T. prudens. Head pale yellowish-white, dusted with 

 fuscous. Face yellowish-white. Labial palpi pale yellowish- 

 white, with two dark-brown spots on the second joint and 

 two rings on the terminal of the same hue, one at the base 



