160 E. T. CRESSON. 



low apical margin; the ovipositor is as long as the abdomen. Lenn;th 5 lines. 

 Hah. — Maine. In the single specimen before me, the second seg- 

 ment of abdomen is deeply and symmetrically emarginate on each 

 side, which however may be a deformity. 



4. Arenetra ventralis, n. sp. — %. — Differs from nirjrita as follows: — More 

 robust; tcfinloi i/cUowish-ivhite; first abdominal segment broader, with subobso- 

 lete lateral tubercles; anterior half of venter yellowish. Length b% lines. 



Hah. — New York; Pennsylvania. 



CYLLOCERIA, Schiodte. 

 This genus is easily recognized by the % antennae having the fifth 

 and sixth joints erose, the former at apex and the latter at base. The 

 anterior wing has no areolet. 



Cylloceria occidentalis. n. sp. — 9. — Black, shining; palpi yellowish; an- 

 tennae varies from reddish-brown to piceous; tegulse white; wings faintly 

 dusky, iridescent; legs, including coxse, reddish-yellow; posterior tibite and 

 tarsi black; mesothorax prominently trilobate; metathorax opaque, minutely 

 rugulose, with pale pubescence, and with two approximate, discal, longitudi- 

 nal earinse; the three or four basal segments of abdomen densely rugulose, 

 coarsely soon first segment, smooth and shining at apex; apical segments 

 smooth and polished, and the -posterior margin of the segments sometimes 

 more or less reddish; venter whitish at base; ovipositor as long as abdomen. 

 Length 3i — 5 lines. 



%. — More slender, and polished, with only the first segment of abdomen 

 rugose, and which segment has a prominent tubercle on each side before mid- 

 dle. Length 3J — 4 lines. 



Hah. — Conn., Penn., West Va., Illinois. 



LAMPRONOTA, Curtis. 

 Abdomen black. 

 Posterior coxse red. 

 Pleura with a yellow or reddish mark on each side before middle coxa; 

 scutellum more or less white on each side. 

 Large ; areolet small, petiolatcd. 



Abdomen coarsely punctured 1. occidentalis, n. sp. 



Abdomen minutely punctured .2. scutellaris, n. sp. 



Small; areolet larger, not petiolated 3. pleuralis, u. sp. 



Pleura entirely white; scutellum with a white spot on each 



side 4. pulchella, n. sp. 



Pleura and scutellum entirely black. 



Abdomen smooth and shining 5. laevigata, n. sp. 



Abdomen punctured. 



Lateral margin of mesothorax, before tegulre, more or less yellow. 



Posterior femora broadly black at tips 6. jocosa, n. sp. 



Posterior femora not black at tips. 



Medium; abdominal segments entirely black 7. insita, n. sji. 



Small ; apical margin of second and third abdominal segments 



narrowly yellowish S. parva, n. sp. 



Mesothorax black, immaculate 9. punctata, u. sp. 



