312 HARRISON G. DYAR. 



6-annulate, greeu to the spiracles, waxy greenish behiw, marked with tar-hrowu 

 in the folds ; spiracles black. Thoracic feet clear ; eye on a black spot. On at- 

 taining this stage the larvie bored in soft wood to pupate. 



Sitting flat on the venter or curled spirally on the back of a leaf 

 of the dock {Rumex). 



Common along West End Avenue, New York City, in the vicinity 

 of unoccupied building lots. 



Ntroiigylogaster apicalis Say. iarm.— Head large, shining, ocherous, 

 a little brownish on vertex and clypeus ; eye in a black spot; jaws black ; width 

 2.2 mm. Feet moderate, abdominal ones the larger, present on joints 6-1.3 : dorsal 

 region not shining, greenish, with a little trace of white bloom, ending iu a lateral 

 smoky black line more or less distinct ; below this line the venter and legs honey- 

 yellow, a little suffused by white bloom, immaculate, or with dusky black dots on 

 the subventral folds ; segments indistinctly 6-annulate, the folds showing as 

 whitish creases. Larva rolls up in a ball and falls ofi' the leaf at the slightest 

 provocation. 



Last stcuje (hibernation). — Shining, annulate, greeu above, whitish below, with 

 a trace of gray marking laterally at the joining of the colors. Head as before. 

 The larva passes the Winter in a cell in the ground. 



Food-plant. — Raspberry {Rubus). 



Teiitliredo Cressoni Kirby. Larm.— Head very pale, slightly testaceous, 

 shining, a brown ocherous shade at vertex, cut (under a lens) by three pale lines, 

 the middle one representing the sutui'e; width 2.4 mm. ; segments 4-6 annulate, 

 on second and fourth (or first and third) annulets some very minute white points, 

 two on annulet 2, five on annulet 4, the last substigmatal, and another substig- 

 matal on annulet 3 ; none on the .subventral folds. Body not shining, whitish, 

 with a green tinge, varying to pale yellowish green, quite translucent; a shaded 

 subdorsal yellowish band, composed of fat granules lying under the skin, dis- 

 tributed in all the annulets : food not showing greatly, dark ; claws of the tho- 

 racic feet brown ; abdominal feet on joints 6-13. Thorax somewhat enlarged. 



Last stage. — Smooth, shining light green, annulate, no tubercles ; a row of small, 

 dark, segmentary subdorsal patches ; otherwise as before. The larvae enter the 

 ground and form a cell for hibernation. 



Found on the white birch at Keeue Valley, sitting on the leaves, 

 curled spirally. Easily, drops off" if disturbed. The same larva oc- 

 curred on white birch at the upper limit of its growth below the 

 summit of Mt. Washington, N. H. (about two and a half miles down 

 the carriage road). 



Mr. iNIacGillivray remarks : The specimen does not agree perfectly 

 with Kirby's description, yet it does not seem to depart far enough 

 to consider it a distinct species. 



