28 Journal New York Entomological Society. [Voi. v. 



gularly and faintly 5-anniilate ; shining green, the dorsal vessel dark, 

 the tracheal line evident ; no marks except little dusky rings subven- 

 trally defining the obsolate tubercles, which can also just be distin- 

 guished dorsally with a lens, though perfectly concolorous. Anal 

 prongs very short, remote, obscurely black-tipped. Setce very fine and 

 short. Thoracic feet clear with brown claws. 



The larvce became streaked with dusky blackish on the annulets, 

 bringing out the tubercles more distinctly and entered the ground to 

 spin. 



Hemichroa laricis Marlaff. 



Head pale brown, dotted, eye black ; a pale arcuate line over the 

 clypeus: width 1.4 mm. Body segments 5 -annulate, the last two annu- 

 lets folded; feet on joints 6 to 11 and 13. Body green, shaded with 

 opaque pale green pigment subdorsally and broadly stigmatally, leaving 

 more translucent dorsal and lateral straight lines and small irregular 

 areas among the subventral folds. The bright green fat granules com- 

 posing the pigment are aggregated along the dorsal vessel, tracheal line 

 and subventrally. Feet concolorous, the thoracic clear with brown 

 claws. Tracheal line straight, white. The larvce are solitary and rest 

 on a needle of the food plant with the head toward the twig. They 

 are very difficult to distinguish in this position, since the brown head 

 harmonizes with the bark and the green-striped body with the leaves. 

 Found on the larch at Jeiferson Highlands, N. H. 



This larva is described by Dr. Packard in Fifth Report United 

 States Entomological Commission as " Selandria (?) sp.," on page 901, 

 number 26 of larch insects. 



Pachynematus affinis Marlatt. 



Feet on joints 6 to 11, none on joint 13. Body segments 6-annu- 

 late, the last two annulets small and folded, whitish. Tubercles on the 

 second and fourth annulets. Head pale greenish with a bright testaceous 

 tint by transparency, eye black, jaws brown; width 1.8 mm. Body 

 pale green with a distinct, straight, rather broad white stigmatal line on 

 joints 5 to 12, lost posteriorly in a whitish shade which covers joints 12 

 and 13; the edges of the dorsal vessel form a distinct white geminate 

 line on joints 3 to ir, pulsating, lost in the white tint posteriorly. A 

 blackish green subdorsal band on thorax, also on the abdomen, but of 

 varying distinctness. Tubercles small, concolorous and obscure, setae 

 rudimentary, dark, situated in two transverse rows, on the second and 

 fourth annulets, and thickly on the subventral folds. Abdominal feet 

 green; thoracic clear with brown tips. 



