March 1897.] 
Dyar: Larwe of Saw-Flies. 
23 
The following species have been named by Mr. C. L. Marlatt: 
Schizocerus prunivorus Marlatt. 
Egg. —In a pyriform slit under the lower epidermis at the middle 
of one edge of the leaf; laid singly. The larva hatches and eats a curi¬ 
ous winding slit down into the leaf; later this reaches the edge. 
Stage I. —Head pale greenish testaceous, eye black ; width .4 mm. 
Body segments well marked, the incisures more perpendicular in front 
than behind, faintly 3-annulate. Translucent with a greenish tint; ali¬ 
mentary canal visible. Thoracic feet large, colorless with black shades 
at their bases; abdominal ones very small on joints, 6 to 11 and 13, 
colorless; joint 13 slightly bulging, with very small anal prongs. 
Stage II. —The same ; head green, width .6 mm. 
Stage III. —Head .75 mm. All leaf green, blackish shades at the 
bases of the abdominal feet, eye black, mouth brown. Large suranal 
prongs green and a smaller more approximate subanal pair. Joint 13 
a little enlarged. On joints 5 to 13 a series of small, colorless, eversible 
lateral glands. Abdominal feet rudimentary. 
Stage IV. —Head 1.T5 mm. All leaf green, a little brownish at 
the vertex, eye black. Body leaf green, shining, 3-annulate, food 
darker. Thoracic feet clear with a blackish cloud at base; abdominal 
ones rudimentary. Six anal prongs; a small pair at end of plate, a large 
lateral pair, reddish tinted and the small subanal pair. Lateral glands sit¬ 
uated substigmatally, posterior. Subventral ridge distinct; tracheal 
line fine. 
Stage V. —Head pale green, thickly brown dotted, eye black; width 
1.4 mm. Body green, faintly 3-annulate, slightly blotched with yel¬ 
lowish subventrally; a black subventral shade on the thorax in spots at 
the bases of the feet which are green, clearer at tip. Subventral ridge 
fluted, glands small; the four suranal prongs brownish, subanal pair 
green. Tracheal line distinct; spiracles dark ; no marks. Cocoon in 
the ground, reticular, of yellow silk. 
Found on Primus pennsylvanica and Amelanchier canadensis at 
Jefferson Highlands, N. H., and on Primus serotina at Bellport, Long 
Island, N. Y. 
Camponiscus americana Marlatt. 
Head pale brown, shining, eye black ; width 1.5 mm. Thorax en¬ 
larged, the feet spreading, pale; abdominal ones on joints 6 to 11 and 
13. Segments indistinctly annulate, incisures well marked, folded. 
Whitish, not shining, the food makes the dorsum to spiracks green, the 
