﻿Dec. iSgs.] Dyar. a New Datana. 16T 



of these three left by Hiibner's action open to our choice, viz.: Incertiii- 

 aria (^Falcarid), glaucata (^Cilix), flexiila {Ave/ifia). fVom this work 

 and the study of the material in the Roemer Museum, there seems to 

 me to be two generic types passing usually indifferently under the names 

 either of Schrank or of Laspeyres. One of these two should be avail- 

 able for Drepaua. I quote the work for the characters : 



A. Hind tibire with two pair of spurs. 'Antenni^ * of the $ with 

 saw-like teeth or notched. 



The species are : ciiltraria, binaria (Jiamtila^, harpas;iila. To 

 this section therefore the term Platypteryx irrevocably applies. Of the 

 species I have not yet seen the last named. 



B. Hind tibiae only with terminal spurs. x\ntenn?e of the q 

 shortly pectinate. 



The species are : falcataria, ctirvatula. I have Jalcatana before 

 me, and it is to this type that we may limit Drepaua, if, in order to use 

 this earliest name for some member of the group, we would not disturb 

 any one of the three genera above indicated. I believe the characters 

 to be of generic value. It is to this genus that our x\merican species 

 belongs, since it appears to "represent" the European falcataria : 

 its correct title is therefore : Drepaua arcuata Wlk. Platypteryx is 

 then not yet found in America. 



A NEW DATANA. 



By Harrison G. Dyar. 

 Datana chiriquensis, sp. nov. — Allied to iutcgerrima G. & R., 

 but larger and without the pale shades bordering the transverse lines. 

 Light brown, the fore wings thickly and evenly irrorate with dark brown scales ; 

 lines and fringe concolorous, darlv brown. Transverse anterior line regularly arcuate, 

 distinct ; transverse median line also distinct, crossing the cell between the discal 

 spots ; transverse posterior line distinct, nearly straight, slightly incurved at vein i 

 and at costal edge; between median and t. p. lines three faint lines (forming one 

 more line than in the United States species), quite regularly spaced; apical streak 

 dislocated, obscure. Discal spots pulverulent, dark, the outer narrow, moderate, the 

 inner obsolescent, much as in ititegerrima. Costal portion of the wing scarcely 

 brighter than the rest. Exterior margin entire. Secondaries brown outwardly, pale 

 toward base. Thorax normal. Expanse 60 mm. 

 Types two 9 J, Chiriqui, Mexico. (Heyde). 



*Note Speyer's use of characters drawn from the female antennje for taxo- 

 nomic purposes and the implication of their value. The character given by Speyer> 

 drawn from the hind tibiae, is one used in the Geometridce, and its use here indicates 

 that there is a true relationship between the families as expressed by Dyar's classili- 

 cation. 



