92 C. p. GILLETTE. 



above autciinae, except a narrow orbital line, black ; antennae 15-jointed, thorax 

 entirely black ; abdomen black, except the tip of the second segment, which is 

 yellowish, and the entire tibise of the hind pair of legs, which are slightly 

 blackish." 



The above description was made from four females and five males 

 which issued between the 1st and lOth of March from galls resem- 

 bling those of Holcanpl^ monticola Gill, sent me by Mr. Trevor 

 Kincaid, who collected them from Quercus garryana at Olympia, 

 Wash. 



This species is very close to oneratus and ficigerre, and especially 

 to the latter species, but I find no trouble in separating the s})ecimens 

 in my possession as indicated in the synopsis above. 



Syn<*i*guK iufiKUi^ n. sp. 



Female. — Colors smoky-yellow and black or blackish. Head smoky-yellow with 

 vertex, down to mandibles, occiput and tips of mandibles black, microscopically 

 rngulose ; vertex with scattered broad punctures, eyes not margined with trans- 

 verse short wrinkles between anteunse and vertex ; antenna} 14-jointed, rather 

 short, just about attaining abdomen, feebly clavate, third joint distinctly longer 

 than fourth, terminal joint hardly once and a half the length of the ]ireceding, 

 color yellow. Thorax with mesonotum densely and rather coarsely transversely 

 rugose, especially posteriorly, parapsides present but rather indistinct, scutellum 

 coar.sely rugose, fovese nearly obsolete, color of mesonotum, .scutellum and most 

 of pleurge black or blackish, collar more or less yellow at the sides, pleurae en- 

 tirely aciculated. Abdomen punctured on posterior one-half, black at base and 

 on dorsum of second segment, shading into smoky-yellow posteriorly and below, 

 the segments beyond the second largely exposed on the dorsum becau.se of a very 

 deep V-shaped notch in that segment, the exposed segments densely punctured, 

 the ovipositor sheaths protruding and black in color. Legs entirely light yell()W, 

 except posterior tarsi, which are somewhat infuscated. Length 2.5 mm. 



i¥aZe. — Differs from the female by having the sides of the collar and the pleurae 

 yellow, abdomen entirely black, second segment but little iiu'ised, antennie 15- 

 jointed, and by being L75-2.25 mm. in length. 



Described from three females and ten males bred from the galls 

 of Aiidrmis frequenx Gill. Collected by the writer at Manitou, Colo. 



SyncrgiiM !«iiiiilis n. sp. 



Female. — General color yellowish with antennae, vertex above antenna;, occiput, 

 tips of mandibles, fully half of mesouotum, pectus, pleurae., metathorax, most of 

 collar, dorsum of second abdominal seginent, ovipo.sitor sheaths, a line on outside 

 of all the tibiae, and the tarsi black or blackish. Head entirely minutely sculp- 

 tured, on vertex with numerous very broad punctures back of the t)celli and with 

 coarse wrinkles outside the ocelli running parallel with the margins of the eyes; 

 antennae 14-jointed, nearly as long as the body, third and fourth joints about 

 equal, and the fifth and sixth hardly shorter, not at all clavate towards the tip, 

 terminal joint about once and a half as long as the preceding. Thorax, with 

 mesonotum, very finely and evenly rugoso-punctate, appearing as feeble tran.s- 

 verse ruga- under a liaU" inch objective, parapsidal grooves weak. The lateral 



