6 CECIDOMYIDAE. 



rentralis Say, Long's Exped. App. 357; Compl. Wr. I, 242; Wiede- 



mann, Auss. Zw. I, 21, 1. - - Pennsylvania. 

 Vitis 0. Sacken, Monographs etc. I, 201; gall figured by C. V. Riley, 



5tt Report, 117; also in Amer. Entomologist, I, 247. District 



Columbia and elsewhere ou Vitis. 



Cecidomyiae known ~by their galls and larvae only. 



agrostis 0. Sacken, Monographs etc. I, 204; originally mentioned in 

 A. Fitch, The Hessian fly, 2d edition, in pamphlet form, p. 38 

 (,,imbricated galls on Agrostis lateriflora"). 



brachynteroides 0. Sacken ,' Monographs etc. I. 198. On Pinus 

 inops, producing a swelling at the basis of the leaves. 



carbouiiera 0. Sacken, Monogr. etc. I, 195. On leaves of Solidago. 



caryaecola 0. Sacken, Monogr. etc. I, 192. -- On Carya; Distr. Co- 

 lumbia. ( 6 ). 



citrina 0. Sacken, Trans. Amer. Ent. Soc. Ill, 53. - - On the terminal 

 buds of young shoots of Tilia americana; New York. 



erataeg-i-bedeguar Walsh, Canad. Ent. I, 79; Proc. Ent. Soc. Phil. VI, 

 266. - - On Crataegus tomentosa. (In the same paper Mr. Walsh 

 mentions galls on Grataeyiis. which he calls crataeyi-plica, litnbus 

 and globulus, without giving any further description.) 



cynipsea 0. Sacken, Monogr. etc. 193. On Carya. 



erubescens 0. Sacken, Monogr. etc. I, 200. On Quercus. 



farinosa 0. Sacken, Monogr. etc. I, 204. --On leaves of the black- 

 berry, Eiibus. 



g-lutinosa 0. Sacken, Monogr. etc. I, 193. On Carya. 



holotricha 0. Sacken, Monogr. etc. I, 193. - - On Carya. ( 8 ). 



i ni pa tic ill is 0. Sacken, Monogr. etc. I. 204; Amer. Entomol. II, 63 

 (figure of gall). Deforms flowers of Impatiens ; Distr. Columbia. 



liriodeiidri 0. Sacken, Monogr. etc. 1.204. On the leaves' of Liriodendron. 



niajalis Sacken, Monogr. etc. I, 204. -- On the leaf-ribs of Quercus 

 palustris. 



nodnlus Walsh, Proc. Ent. Soc. Phil. Ill, 599. -- On Salix lonyi folia. 



nucicola 0. Sacken, Trans Amer. Ent. Soc. Ill, 53. --In the husks 

 of the nuts of Carya New York. 



niveipila 0. Sacken, Monogr. etc. I, 199. --On Oak-leaves. 



ocellaris 0. Sacken, Monogr. etc. I, 199. -- Produces ocellate spots 

 on the leaves of Acer rubrum. 



persicoides 0. Sacken, Monogr. etc. I, 193. On Carya. ( e ). 



pocnliim 0. Sacken, Monogr. etc. I, 201. On Quercus. ( 1 ). 



piiii-iiiopis 0. Sacken, Monogr. etc. 1, 196. Forms a resinous cocoon 

 on the leaves of Pinus inops. Distr. Columbia. 



pellex 0. Sacken, Monogr. etc. I, 199. Galls on leaves of Fraxi mis 

 americana. Distr. Columbia. 



pudibunda 0. Sacken, Monogr. etc. I, 202. --On the leaves of Car- 

 pinus americana. Distr Columbia. 



racemicola 0. Sacken. Monogr. I, 196. On SoliJago, among the 

 racemes. Distr. Columbia. 



