June, i8g8.] DVAR : NEW SPECIES AND LARV/E OF SaWFLIES. 131 



Stage VII — (Ultimate.) Not smooth, the tubercles represented by 

 small distinct cones ; not shining, all very light whitish green, very 

 much whiter than in the feeding stages, slightly wrinkly annulate, no 

 marks, no tarry shades. Larva as high as wide, robust. Spins a rather 

 fine brown cocoon either in the earth or after boring in decayed wood. 

 Single brooded. The larva is solitary, rarely several together, resting 

 on the upper side of the leaves of Q. tinctoria early in June. They are 

 unusually sluggish, often feeding upon a single leaf. 



Others were found on the white oak ( Q. alba) which appeared less 

 robust and had a pale space on the spines at the bases of the limbs; but 

 the imagines seem indistinguishable from the others. 



Brookhaven, Bellport and Yaphank, Long Island, N. Y. 



Periclista emarginata MacGillivray. 



9 . Black, clypeus emarginate, labrum pale ; abdomen with the tips 

 of segments lined with whitish below, the last segment brownish ; pro- 

 thorax largely and tegulae white.; legs pale, the femora brown, except 

 narrowly on the under side ; tips of tarsi dusky. Under wings with one 

 middle cell or none. 



Two 9 9 bred from larva; similar to those described (Can. Ent., 

 xxvi, 185;, which produced the $ type. 



Stage IV. — As in next stage, spines all pale; head .7 mm. 



Stage V. — Head 1.1 mm., a shade above ocelli, the" patch in clypeus 

 single, transverse, later double. 



Body green, spines all pale, furcate, arranged as in the preceding 

 species of Periclista. 



Stages Viand VII have been published. 



Found on Q. coccinea at Pelham Manor and Van Cortlandt Park, 

 N. Y., in May. 



Periclista subtruncata, sp. nov. 



9. Similar to the preceding, but the clypeus shallowly emarginate. 

 Shining black, prothorax narrowly and tegulte white; abdomen entirely 

 black. Legs brown, coxa; and basal two-thirds of femora blackish, tarsi 

 dusky. Sculpturing essentially as in emarginata, but the vertical groove 

 on head shows a tendency to cross the transverse one between the pos- 

 terior ocelli. Length, 5.5 mm. One 9. 



Not strikingly distinct in either imago or larva from P. emarginata, 

 but both Mr. MacGillivray and Mr. Ashmead have compared the flies 

 and do not consider them the same. 



Stage IV. — Head pale brown, dotted on a greenish ground, a black 



