ART. 10 CxALL-INliABITING CYNIPID WASPS WELD 61 



Gall (fig. 43). — Trotter described and figured the gall under the 

 name fAndricus fotelloides - in 1911. The galls are solitary or in 

 groups of but two or three on under side of leaf. The underside is 

 bowl-shaped, sessile, the top flat with a deep depression in center, 

 measuring up to 13 mm. in diameter by 7 mm. high. When growing 

 they are gray green like the leaf with a red line around the rim, 

 maturing to a surface which in color and texture resembles that of 

 an old and polished bone. The larval chamber, 2.9 mm. by 1.5 mm. 

 lies transversely under the central depression and the exit hole is 

 made through the thin roof into the bottom of this depression. 

 Under the larval chamber a median cavity reaches to the point of at- 

 tachment. The walls consist of dense brittle cellular tissue which, 

 near the exterior, becomes more compact and forms a very hard thin 

 peripheral layer. 



Habitat. — The types are from galls collected September 7, 1922, 

 in Sequoia National Park, Tulare Count}^, Calif. The two living 

 flies were cut out of the galls November 10. A paratype in balsam is 

 from Idyllwild in the San Jacinto range and others are from Kern 

 County galls collected October 23, 1892 (U. S. D. A. 5527), the adults 

 emerging November 26, 1892. The writer collected the galls at 

 Camp Baldy (Hopkins U. S. 15614c?) and at Kyburz. 



PHILONIX GIGAS Weld 



In the i^aragraph on habitat in the original description of the 

 species the following biological data were omitted. The galls were 

 collected October 10, 1917, when some already contained pupae. A 

 few adults were cut out of galls on November 16 and the rest of the 

 galls put in an out-of-door breeding cage at Evanston, 111. Here 

 eight adults issued by December 1, and on December 18 three more 

 living adults were found in the cage, the thermometer having regis- 

 tered — 14° F. in the interval. Others issued early the next spring. 

 The emergence must be distributed over at leavst two or three seasons, 

 for normal larvae were found when the last of the galls were cut 

 open December 2, 1919. 



PHILONIX NIGRA (Gillette) 



This species is here recorded from Evanston, Glencoe, Glen Ellyn, 

 and Fountaindale, 111.; Manistee, Mich.; Porter, Ind. ; Kimmswick, 

 Ironton, and Poplar Bluff, Mo.; Corinth (C. Barracks), Iowa; Ne- 

 braska City, Nebr. ; Tuskahoma, Okla.; Marianna and River Junc- 

 tion, Fla. ; Bluemont, Va. ; Ithaca, Riverhead (C. R. Crosby), and 

 New York City (Beutenmueller), N. Y. From galls collected at 



" Boll. Laboro. Zool. Poitici, vol. 5, i>. lOG, fig. G, and Marcellia, vol. 10, 1911, p. ;55, 



ng. G. 



