Dec. isg?.] Dyar: New Sawflies, and Larv^. 193 



series of short thick papill?e, one on each annulet in subdorsal and lat- 

 eral even regular rows, and other smaller ones scattered subventrally. 

 First row (subdorsal), which is the shorter,' has the papilla on annulet 

 I orange, 2-4 black, 5-6 orange, 7th black ; second row (lateral) which 

 is larger, has ist to 4th orange, 5th to seventh black; two behind the 

 spiracle and two subventrally posteriorly pale orange ; two groups of 

 six to eight very small ones on the upper and lower subventral folds 

 whitish. Sides with a number of small black spots. On thorax there 

 are less of the papillae, but the alternation in color is similar. Anal 

 plate not differentiated. 



Ultimate stage. — Smooth, very shiny, entirely dark slaty blue black, 

 papillae indicated by very small concolorous points. Thoracic feet pale. 

 Enters the earth at once to form a moderately firm hibernating cell. 



Sent me by Mrs. Slosson from Franconia, N. H., feeding on the 

 elder. 



Mogerus caryicolus, sp. nov. 



Lanceolate cell petiolate, under wings without middle cells, but a distinct mar- 

 ginal vein in the male, none in the female ; eyes rather distant from base of mandi- 

 bles. Shining black, abdomen largely whitish. 



Male. — Head black, clypeus emarginate and with the palpi white. Thorax 

 black, posterior edge of pr&thorax, tegulse, cenchri and all the sutures on the sides and 

 below white; coxk lined with black and white; legs luteous brown, base of tibiae 

 slightly marked with black, tarsi dusky. Basal plates of abdomen and extreme base 

 of first segment black, the rest luteous above, sordid white on the sides, the tips of the 

 segments faintly marked with subapical black lines ; spiracles showing as black dots. 

 Venter of abdomen darker, each segment broadly banded with black at the base, ex- 

 tending part way up the sides. Veins dark brown, stigma and costa pale luteous, 

 shaded with brown at the margins. Wings clear. 



Female. — Black above, clypeus white with brown tip, palpi pale. Thorax 

 black, the middle and side lobes of mesothorax brown with a black central streak in 

 each ; posterior half of prothorax and tegulse white ; upper half of pleura brown ; 

 coxre and trochanters marked with black and white. Abdomen black dorsally, sides 

 and venter sordid greenish white, the posterior edges of all the segments with a fine 

 white line ; ovipositor sheaths blackish ; spiracles black dotted. Length 6. 5 mm. 



There is some variation in color. Another female has the brown on thorax 

 largely replaced by black, but the sutures on the sides distinctly marked in white as 

 in the male. The abdomen is narrowly black banded below and the segments above 

 are black only on the anterior portion. Costa and stigma pale. 



I have placed this species in Mogerus on the characters of the male. 

 The female is a Biennocampa. 



Larva. — Head i mm., shining greenish white, eye in a black spot. 

 Body green, faintly 5-annulate, with short Y-spines, all whitish, uniform. 



