July j8,9.J 



PSYCHE. 



387 



dorsal, subdorsal (below the white one') and 

 subventral bands appear. 



Stage 11. Head with conical pointed 

 lobes; four conical points on the cervical 

 shield, the posterior pair small, nnal flap 

 triangular and with the anal feet large. 

 Dark brown, paler subventrally, on the anal 

 plate and feet; densely white frosted with 

 numerous granules which segregate to form 

 a linear pale subdorsal line. Width of head 

 about .4 mm. The larva is a slender normal 

 Geometrid. 



Stage III. Lobes of head conical, high 

 and pointed, the vertex therefore deeply 

 notched; w-idth .6 mm. A pair of similar 

 conical points on the cervical shield ante- 

 riorly. Anal plate pointed behind. Other- 

 wise the larva is smooth, slender, of a pale 

 dead-leaf brown, frosted witli whitish 

 granules that form narrow, obscure, sub- 

 dorsal, lateral and subventral lines and 

 oblique ones between the subdorsal and 

 lateral. Setae obsolete except on joint 13. 



Stage IV. Head high with pointed flat 

 lobes, greenish brown, brown on the angles 

 and narrowly in two lines that form an X- 

 mark with the clypeal sutures; width .S mm. 



The points on the cervical shield are not so 

 high as the lobes and are roughened; anal 

 plate with a pointed projection ; anal foot- 

 plate large. Body slender, smooth, greenish 

 brown, thickly white granular, forming 

 faintly raised pale lines one granule wide; 

 a dorsal, subdorsal, wavy lateral (almost 

 forming a series of obliques) and subventral, 

 all obscure. A series of dorsal, interseg- 

 mental, deep brown dashes on joints 5 to 9. 



Stage V. Head roughly granular, i. 5 

 mm. wide, marked as before, but there is a 

 whitish shade on the front of each lobe. 

 Cervical horns red tipped. Otherwise as 

 before. Towards the end of the stage the 

 larvae became shrunken so that the dorsal 

 brown spots were occluded in the incisures; 

 they looked shorter and thicker and more 

 densely granular. They sit erect without 

 spinning a supporting thread. 



The species is single brooded. Eggs laid 

 June 14th from moths that were at the end 

 of their time of flight. The larvae spun 

 August 4th and pupated on the 7th. passing 

 the winter in this state. The larvae fed on 

 the red oak (^iiercus cocci/iea). Found at 

 Brookhaven, Long Island, N. V. 



DESCRIPTION OF THE TYPE OF POLYDONTOSCELIS ASHM. 



BY WILLIAM H. ASHMEAD, WASHINGTON, D. C. 



In my generic tables of some Homoptera, 

 published in Entomologia Americana, vol. 

 V, p. 126, I characterized a new genus under 

 the name of Polydontoscelis, the type of 

 which has never been described. This I pro- 

 pose to do now since the type is requested of 

 me for study. 



Polydontoscelis differs from Aethalion La- 

 treille, principally by having no cross-veins 

 on the clavus, the cross-veins in the costal 

 cell being more numerous, the submedian 

 cell having only one cross-vein, while all 



the tibiae have a broad rather deep, longitu- 

 dinal channel outwardly, the hind and lower 

 edge of the posterior tibiae being armed with 

 numerous minute teeth. 



Polydo7itoscelis cititifrons n. sp. — ■$. — 

 Length to tip of tegmina 9.5 mm ; breadth 

 across shoulders 3.6 mm. Brownish-yellow 

 with a greenish tinge, and probably greenish- 

 yellow in life. Head seen from in front 

 with two transverse bands ; pleura with a 

 longitudinal black band, extending forward 

 and connected with a similar band on the 



