134 



green over the whole of the dorsum. The junction of the segments is 

 yellowish. Spiracles very small, whitish, with broad black ring. The 

 lower lateral space is pale bluish green. On the top of the 12th seg- 

 ment, which is somewhat swollen, are 2 small spots of clear white. 

 The underside is wholly pale bluish green. 



Length, 35 mm. 



Food plants. Viburnum^ Betula, etc. 



AcHATODES Ze.*;. Harris. (No. 18.) 

 Larva. {Full grown.) 



Sordid white. Head and 2d segment 'jet black, shining, the latter 

 occasionally white at the sides with 2 black spots. The 3rd and 4th 

 segments have each 14 jet black shining points, 12 of which are placed 

 transversely and somewhat irregularly, the other two in front, the lateral 

 and sub-dorsal points being the largest. The other segments, except 

 the anal, which is wholly black, have 12 black spots each, those of the 

 dorsum being the largest. Feet black. Abdom. legs sordid white, 

 with a black lunate mark at their junction with the body. Spiracles 

 jet black. 



Length, 1.00 inch. 



In stems of elder [Sambucus) feeding upon the pith. 



Pupa. Bright shining chestnut brown, the anterior portions of all 

 the segments darker, roughened. The spiracles are also darker brown. 

 The head is truncate in front, and furnished with two small roughened 

 but pointed processes, which are probably used to break through the 

 thin rind of the alder stem, as the larva feeds out a space, leaving on 

 the outer rind a very thin portion to enable it to escape. 



Length, 0.90 inch. 



SCOLECOCAMPA LIBURNA, Gcycr. (No, 3.) 



Larva. (Full grown.) 



Head and 2d segment pitchy black, very shining, bearing a few 

 fuscous hairs. General color dull smoky, or greyish white, with a darker 

 dorsal line. The outer integument is thin and transparent, and through 

 it the circulation can be distinctly seen. From each of the segments 

 spring 10 small brown tubercles, each bearing one or more fuscous 

 hairs. These tubercles are placed laterally, the dorsal region being 

 entirely free from them. The anal segment is pitchy, as are also the 

 thoracic feet, the abdominal legs being concolorous with the body. 



Length, 1.60 inch. 



In decaying stumps of chestnut trees. 



As soon as the "larva is ready to transform it hollows out a small 

 space in the ground at the base of the tree, which it covers with a thin 

 web, and then spins a rather tough cocoon of pieces of wood, inter- 



