98 C. p. GILLETTE. 



tibiie, and in a less degree the intermediate ones are brown. Fifth. The sheaths 

 of the ovipositor do not project beyond the line of the back, or scarcely, and in a 

 single female only, though the ovipositor often projects fnmi between them, which 

 is not seen in any of my five Ixviventris females. Length of male .04-. 07 inch. ; 

 female .07-. 09 inch. 



"Twelve males and eight females bred from the galls of Q. floggi 

 (equals Q. hunt f Fitch) on the 4th of August, when I obtained 41 

 males, 5 females, and other specimens August 1st and after August 

 4th, all from galls of the preceding year's growth. Hence it would 

 seem that this species is not double brooded like keviventrls." 



Mr. Cresson, in his " Synopsis of the Hymeuoptera," etc., pub- 

 lished in 1887, make this species .syuonymous with laiue Fitch, which 

 I think is a mistake. In laiue the head, except the vertex, is straw- 

 colored, while in albipes it is all black ; in kuue the second abdominal 

 segment does not completely cover the succeeding, wdiile in albipes it 

 iloes ; in lance the females are 15-jointed, while in albipes they are 

 but 14-jointed. I have both species in my collection, and they are 

 very distinct. 



As the name albipes was preoccupied for an European species by 

 Hartig, I will suggest for Walsh's species the name ivalshli. jNIv 

 specimens were bred from galls taken at Lansing, Mich., but what 

 galls I do not know. 



^iyiier$;iiw leviventrix O. S. 



Si/iiophnis lwvife)ifris O. S., Proc. Ent. Soc. Phila. i, 1861, p. 57, 9 % ■ 

 Symphrtis Isevirenfri.s WuMi, Proc. Ent. Soc. Phila. ii. 1864, p. 494. n. 16, 9 % ■ 

 Synergus Iseviveiitris O. S., Proc. Ent. Soc. Phila. iv, 1865, p. 375, n. 3. 

 Synergus Iseviventris O. S., Proc. Ent. Soc. Phila. v, 1867, p. 380. 

 Synergus Iseviventris Cresson, Syn. Am. Hymen. 1887, p. 180. 

 Syvergus leviventris De Dalla Torre, Cat. Hyme'i. ii, 1893, p. 111. 

 " Female 0.07-0.08 long. Head reddish brown, vertex darker, antennse brown- 

 ish yellow, second joint not nnich shorter than the fourth, the third about one- 

 third longer than the fourth ; joints four, five and six of about equal length ; the 

 fourteenth, or last joint, is somewhat less than once and a half the preceding; 

 thorax black and moderately glossy, finely rugoso-punctate and pubescent ; scu- 

 tellum gibbose with a slight, sharp, recurved, elevated margin (thorax and scutel- 

 lum in older specimens often becoming brownish or reddish brown); ])arapsidal 

 grooves distinct their whole length ; fovese at the base of the scutelluni rather 

 small, Imt distinct; pleursE black or brownish, polished and glossy under the root 

 of the wing, aciculate below, i)unetate anteriorly ; first abdominal segment striate ; 

 the second segment, covering all the following, is chestnut-brown or black, paler 

 on the under side; its shape, seen from above, is elongated-ovoid, the tip being 

 drawn out in a point; the side view is almost lanceolate, the top appearing 

 pointed ; held against the light, the valves of the ovipositor, as well as the ven- 

 tral valve, may be seen, concealed as they are under their unusually long second 

 joint; the ovipositor, alone, protrudes sometimes beyond the joint; feet brown- 



