Dec. iSg?.] Dyar: New Sawflies, and LaRV/E. 191 



nervure ; under wing with one middle cell or none. Black, coarsely- 

 granular and with a fine golden yellow pubescence. Head black, cly- 

 peus and labrum bright yellow, two basal joints of antennae orange yel- 

 low, palpi pale. Thorax black, posterior edges of prothorax, cenchri, 

 trochanters, basal two thirds of all tibia and apex of anterior femora 

 yellow ; tegulse orange yellow ; apex of tibiae and tarsi light brown. Ab- 

 domen black, basal plates yellow, first segment brown centrally, each 

 segment with a narrow posterior yellow line, the terminal segment half 

 yellow ; venter black. Wings faintly yellowish smoky, veins black, costa 

 and stigma brown, the latter yellow at base ; a black dot in the second 

 submarginal cell. Length of male lomm., female ii mm. ^. robiista 

 Kirby seems to be the same species. Larva characterized Can. Ent., 

 XXVII, 339as"5c." 



Stage I. — Head .35 mm., brown-black, shiny; skin dark. 



Stage II. — Head .53 mm., black, slightly pruinose. Body dull gray, 

 scarcely darker dorsally except from the food showing by transparency ; 

 thoracic feet black ; subventral region white ; no spots. 



Stage IV. — Head .9 mm., dark gray, body pruinose gray, brighter 

 subventrally, annulate. No marks. Length 10 mm. 



Stage V. — Head black except around the mouth, covered with white 

 bloom ; width 1.3 mm. Dorsal area faintly grayish, lateral black spots 

 distinct, two on each segment ; a series of small black spots subventrally 

 along the bases of the feet, three on each segment. Subventral region 

 yellowish, black points present ; a white bloom. 



Stage VI. — Head black, pale around the mouth ; width 1.6 mm. 

 Body as in the mature larva but the gray less evident, marks all smaller 

 and fainter. A thick white bloom gradually appears. 



Stage VII. — Head shining black with a faint white bloom; antennae 

 short, pointed ; width 2.0 to 2.2 mm. Thoracic feet large, slender, di- 

 vergent, abdominal ones small, present on joints 6 to 13. Segments 6- 

 annulate with minute black points on the second and fourth annulets, a 

 few others on the third annulet, stigmatal and subventral folds. Body 

 pruinose leaden gray, a thin white bloom on a sordid greenish leaden 

 ground ; a series of diffuse, quadrate, black patches laterally, two on 

 each segment between annulets 1-2 and 4-5. Upper subventral fold 

 faintly yellowish, obscured by the bloom ; lower fold black, forming a 

 nearly continuous band. Subventral region white ; feet and venter 

 whitish ; thoracic feet largely black. Solitary feeders, do not curl. 



Stage I'YII. (ultimate) — Head leaden black, but over the clypeus and 

 below antennae whitish; width 2.2 mm. Body annulate, shining, leaden 



