IXSECTS AFFECTING PARK AND WOODLAND TREES 561 



dorsal stripes and lari^er supralalcral oin-s on tlu: mitldlc of each set^ment. 

 There is a more or less indistinct lateral, dark ijrown or black line bordered 

 above and below by grayish or yellowish. The stri]>es above and below 

 this indistinct line are lighter and irregularly mottled with grayish or 

 yellowish. The true legs are jet black, prolegs dusky orange or yellowish. 



The molh lias a wing si)rca(l nf a little over an inch, tin- fore and hind 

 wings being pale gray, the latter sparsely marked with dark brown scales 

 I pi. 16, fig. 2]. 



Life history. The eggs of this species, according to Riley, cjccur in 

 April, May, July and August, the larvae from May to July and August to 

 September, adults March, .\])ril, May and July and August. There are 

 evidently two generations annual]}-. 



Pteronus mendicus W alsh 

 A yellowish, leaf-feeding specicts. This sawtly larva was taken on wil- 

 low in Central park and also at Plattsburg by Dr Dyar, who describes its 

 method of oviposition and early stages as follows : 



/'^gg: Laid anywhere on the leaf in semicircular saw cuts just inider 

 the u])per epidermis ; cuts 1.5 mm in diameter. 



First stage. Head blackish testaceous, shining, eye and mouth black; 

 higher than the body; width .3 mm. Hotly indistinctly 4-annulate, not very 

 shininir, ereenish. 'Fhoracic feet and anal prongs blackish ; abdominal feet 

 on joints 6-1 1 and 13. 



Second stage. Head dull testaceous, a blackish longitudinal line at the 

 vertex, one upward from each ocellus ; eye black, mouth brown ; width 

 .55 mm. Body dull greenish, thoracic feet concolorous ; a faint blackish 

 tinge above spiracles and a little on subventral ridge on joints 2-4, pale 

 along dorsal line ; posterior portion of the body curved under so as to touch 

 the venter; anal prongs blackish. 



Third stage. Head rounded, tlatlened before, pale green, faintly 

 brownish tinged; a black longitudinal line over the vertex, reaching top of 

 clypeus; a lateral transverse line over ocellus, not quite reaching vertex; 

 mouth brown ; width .9 mm. Body soft, leaf-green, a faint blackish dorsal 

 and substigmatal shade line; venter a shade paler. Feet small, green ; anal 

 prongs blackish. Body scarcely annulate, not shining; tracheae showing as 

 a white line. 



Fourth stage. Head clear green, marked as before, the marks clouded, 

 not so black as ocelli ; an additional patch at apex of clypeus; width T.15 

 mm. Body uniform leaf-green, not shining, except in the creases of the 



