(>8 



PSYCHE. 



[May .Sq7. 



length with the fifth ; joints 6-8 become grad- 

 ually shorter and shorter, joints 8 to 1 1 being 

 only a little longer than thick, the 12th or 

 last joint oblong, as long as 10 and 11 united. 

 The head and thorax are closely punctate, 

 opaque, and \'&\'y hair;', the disk of the meso- 

 pleura alone polished and bare; the scutellum 

 is cushion-shaped, a little longer than wide, 

 with two smooth, lunate foveae at base; 

 hind tarsi not longer than their tibiae, the 

 claws with a tooth at base beneath. 



Trichoteras coquilletti sp. n. Galls. — 

 Small, brown, subopaque, globular galls, 

 averaging from 6 to 8 mm. in diameter, and 

 internally with a central kernel or larval cell 

 held in place by radiating filaments. 



These galls were collected by Mr. D. W. 

 Coquillett, at Los Angeles, Cal., from the 

 upper surface of the leaves of an unknown 

 oak, who forwarded them to the Department 

 of Agriculture, where three sjiecimenN of 

 the gall wasp were reared. Structurally and 

 in general appearance the galls very closely 

 resemble Dryofhanta folila Bass., but the 

 subapterous wasp is quite different from that 

 species. 



Gall-wasp. Agamous, ?. Length 2.5 mm. 

 Head and thorax ferruginous, closely punc- 

 tate, and very hairy ; prosternum and pleura 

 blackish ; legs fusco-piceous., the articulations 

 paler. 



Antennae i2-jointed, shorter than tlie 

 body, the scape fully as long as the first 

 joint of flagellum, obconical, and much 

 stouter, pedicel i4 times as long as thick; 

 second joint of flagellum distinctly longer 

 than either the first o)- third joint; fourth 

 joint of flagellum a little shorter than the 

 third, the fifth and following joints gradu- 

 ally shortening, the penultimate joint being 

 scarcely longer than thick, the last joint fully 

 as long as the first joint of tlagelUmi, or 

 twice as long as the penultimate. Wings 

 abbreviated, narrowed and not extending 

 beyond tip of abdomen, the veins dark brown, 

 the marginal cell open, the areolet indicated 

 by the union of the surrounding nervures. 



Abdomen black, polished, pubescent along 

 the sides towards base, and as long as the head 

 and thorax together, compressed, and viewed 

 from the side it is as broad as long, the 

 hypopygium armed at tip with a long 

 spine. 



Hab. — Los Angeles, California. 



Type, No. 349S, U. b. N. M. 



Described from 3 J specimens, bred Nov. 

 26 and 29, and Dec. 6, 1892. 



AuLACiDEA gen. no\'. 

 The type of this genus is Aiilax mulgidiicola 

 Ashm., and to it belong all the N. A. species 

 recently described under the genus Aulax. 

 From Aulax Hartig {sens, str.) it is readily 

 separated by the closed marginal cell. It is 

 intermediate between Aulax Hartig, and 

 Phaenacis Forster; from the former, it is at 

 once separated by the character already re- 

 ferred to — tlie closed marginal cell, while 

 from the latter which also has a closed 

 marginal cell, it difters in having the first 

 abscissa of radius curved, the apical branch of 

 the submarginal vein straight, the parapsidal 

 furrows sharply defined, complete, the female 

 with 13-14-jointed antennae, the third joint 

 being shorter than the fourth or at least no 

 longer. In Phaenacis the first abscissa of 

 radius is almost straight, the apical branch of 

 the submarginal vein curved, the parapsidal 

 furrows incomplete or vaguely, indistinctly 

 defined, while the female antennae has the 

 third joint longer than the fourth. 



GoNASi'is gen. nov. 

 This genus is based upon Diastroplius 

 sciitclliiris Gillette, and to it also belongs 

 D. potentillae Bassett. It is at once separated 

 from Diastrophus Hartig, by the shape of the 

 scutellum which is much produced, in out- 

 line pyramidal, its tip projecting far over the 

 metatliorax, by the lower half of the meso- 

 pleura being coarsely sculptured, and by the 

 antennae being 13-jointed in 5' 14-jointed in 

 (J. In Diastrophus the $ has 14-jointed 

 antennae, the J ij-jointed antennae. 



