AMERICAN NEUROPTERA. 143 



AliLOCHRYSA gen. no v. 



Similar to Chrysopa, but the third cubital cell is nearly equally 

 divided, the divisory veinlet running into the end-veinlet of the cell 

 instead of into the upper margin. The antennae are quite long, their 

 bases close together. There are two full series of gradate veinlets in 

 each wing. Type A. virginica. 



The two species known to me are separated as follows : 



Pterostigma marked with brown ; large species; basal part of antenna? pale. 



virginica. 

 Pterostigma unmarked ; small species; basal part of antennae black, -parvula. 



Alloolirywa virginica Fitch. — Green, unspotted ; but in life the abdo- 

 men is marked with reddish and yellow. Antenna? as long as wings. Pronotum 

 as long as broad, tapering in front. Legs very slender. Wings large and long, 

 fore pair rounded, hind pair acute at tips ; third cubital cell divided obliquely ; 

 both series of gradate veinlets are very full. Venation green, except the outer 

 gradate series which is brown, and sometimes the radial cross-veinlets are dark 

 at bases; pterostigma in both pairs with a brown spot at base, and in fore wings 

 there is a brown dot on the last veinlet connecting the cubital and median veins- 

 Length 19 mm. 



The type came from Cartersville, Virginia. I have taken speci- 

 mens in the District of Columbia from oak trees in July, and have 

 co-types of N. phantasma MacGillivray from W. Chop, Mass., in 

 August; also from Florida. Have also seen a specimen from Staten 

 Island, N. Y., in August. This species appears to favor the oak 

 tree, and lives among the upper branches where its capture is most 

 difficult. 



X llochrysa aiintilata MacGillivray. 



I have not seen this species. In coloring of head and wings it 

 agrees exactly with Chri/sopa oculata, and I suspect it is a sport of 

 that species. It was described from Massachusetts. 



Allodirysa parvula n. sp. — Face pale yellowish, vertex greenish, devoid 

 of markings; basal joint of antenna? pale yellowish, outside with a black line, 

 second joint and about a dozen following black, beyond pale; prothorax green, 

 margined on the sides with red-brown most broadly in front; rest of thorax 

 and the abdomen pale greenish, unmarked ; wings hyaline, veins green, most of 

 the transversals brown, pterostigma not distinct. Head rather broad, vertex with 

 a slight depression in the middle; antenna? about as long as wings; pronotum 

 short and broad, plainly narrowed near front; wings moderately long and acute 

 at tips, third cubital cell divided into two sub-equal parts by the divisory veinlet, 

 radial sector connected to the median by four cross-veins, beyond which there 

 are five branches of the sector. Length 11 mm. 



TRANS. AM. ENT. SOC, XXIX. APRIL, 1903. 



