OF WASHINGTON, VOLUME XIX, 1917 43 



Gracilaria Haworth. 



Type: Gracilaria syringella Fabricius. 



Head smooth. Antennae 1 or over 1, basal joint more or less elongate. 

 Labial palpi long, curved, ascending, second joint sometimes with tuft 

 beneath, terminal joint about as long as second, pointed. Maxillary 

 palpi moderate, filiform, porrected. Middle tibiae tufted with dense 

 scales, posterior tibiae smooth. Forewings elongate lanceolate or nar- 

 rowly elongate; normally 12 veins (one dorsal branch from cell sometimes 

 absent), 4 and 5 sometimes stalked. Hind wings about -|, narrowly elon- 

 gate, acuminate; 8 veins usually (sometimes anabsolescent additional vein 

 is distinguishable arising from the stemof 7 beneath the termination of 8 

 on the costa), 5 and 6 stalked. 



This is a large genus which will probably eventually be broken 

 up. Among our North American species we have none which 

 comes close to syringella, the type, nor indeed to the species pro- 

 posed as types of Euspilapteryx Steph., Aspilapteryx Spuler and 

 Xanthospilapteryx Spuler. Practically all our species, hitherto 

 described, will be found under Meyrick's division E of the genus 

 Gracilaria and form quite a compact group, easily separable 

 from other members of the family. In most of our species the 

 venation is complete and but little tendency of the veins to stalk 

 with one another is shown. 



EXPLANATION OF PLATES. 

 PLATE VI. 



Fig. 1. Gracilaria elongella Linn. (European). 



Fig. 2. Gracilaria murtfeldtella Busck (Hindwing). 



Fig. 3. Gracilaria syringella Fabr. (European). 



Fig. 4. Parornix guttea Haw. (European). 



PLATE VII. 



Fig. 1. Cremastobombycia solidaginis Frey and Boll. 



Fig. 2. Neurolipa randiella Busck. 



Fig. 3. Parornix preciosella Dietz. 



Fig. 4. Leucanthiza a?i//>//i<-<irpeaefoliella Clemens (after Clemens). 



Fig. 5. Marmara fasciella Chambers. 



Fig. G. Acrocercops onosmodiella Busck (Forewing). 



PLATE VIII. 



Fig. 1. Acrocercops brogniardellum Fab. (European). 



Fig. 2. Acrocercops (Dialeclica) scalariella Zell (European). 



Fig. 3. Leucospilapteryx venustella Clemens. 



Fig. 4. Pareclopa pennsylvaniella Engel. 



Fig. 5. Apo phthisis pullata Braun (after Braun). 



Fig. 6. Aficrurapteryx salicifoliella Chambers. 



