198 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.59. 



striate, interocular area 1.1—1.3 times as broad as high, malar space 

 less than 0.4 eye, transfacial line 1.5-1.6 times facial, clypeus trun- 

 cate, mandibles 2-toothed, palpi 5- and 3-segmented, antennae 13- 

 segmented, third and fourth subequal, 5-12 gradually shorter, last 

 twice as long as preceding. Pronotum not infuscated on sides. 

 Mesoscutum length to breadth as 21:27, smooth and with setigerous 

 punctures, median black spot around narrow smooth parallel lines 

 bilobed behind and reaching two-thirds way back to scutellum, 

 lateral line areas black, parapsides not reaching over half-way. 

 Scutellum rugose, with arcuate furrow at base in which are deeper 

 places on sides. Propodeum with semicircular ridge above petiole 

 touching upper margin. Mesopleura without oblique dark line across 

 middle. Hind tarsi infuscated but exposed parts of coxae are not. 

 Wings hyaline, veins black, first abscissa of radius angled above 

 middle, areolet reaching one-fifth way to basal, cubitus reaching two- 

 thirds. Abdomen not compressed, second segment infuscated dor- 

 sally and on hind margin, pubescent on sides, ovipositor when dis- 

 sected out one and one-fifth times antenna. Using width of head 

 as a base, the length of mesonotum ratio is 1.39; antenna, 2.2; ovi- 

 positor, 2.4; wing, 4.27. 



Length of two pinned specimens, 3.9 and 4.1 mm. 



Closely related in coloration to Bisholcaspis terrestris Weld, but 

 separated by the much broader thorax. 



Type— Cat. No. 22577, U.S.N.M. One cotype. 



Host. — Quercus breviloba Sargent. 



Gall. — A bullet gall at base of sprouts similar to those of Dishol- 

 caspis terrestris Weld on Quercus stellata Wangenheim. 



Type locality. — Austin, Texas. Collected a few galls October 30, 

 1917. Cut out three living flies and one pupa November 13. Col- 

 lected galls also at Boerne, Texas, October 27, and one gall opened 

 on that date contained a pupa which transformed before November 

 10. The normal emergence is probably in the late fall. 



5. DISHOLCASPIS TERRESTRIS, new species. 



Plate 28, fig. 3. 



Agamic female. — Head, thorax, and legs reddish-brown, but eyes, 

 tip of mandibles, antennae, base of scutellum, metathorax, and pro- 

 podeum black and black areas inclosing lateral lines and a median 

 black area inclosing parallel lines and reaching back to middle of 

 parapsides. Pubescence tawny. Abdomen very dark clear red, sec- 

 ond tergite infuscated dorsally and on hind margin. Head coriaceous 

 with radiating striae on malar space which is about four-tenths of 

 eye and about equal to ocellocular space, interocular area 1.15-1.3 

 times as broad as high, facial line two-thirds of transfacial, axial 

 four-tenths of transfacial, mandibles 2-toothed, palpi 5- and 3- 



