ART. 10 GALL-INHABITING CYNIPID WASPS WELD 121 



In 1921 E. S. Gourlay sent a gall and adults which the writer 

 determines as this species from Christchurch, New Zealand. Evi- 

 dently the plant and its gall have been introduced there also in 

 recent years as they have been on our own Pacific coast. Kirk's 

 Students flora of New Zealand (1899) speaks of the plant as 

 "naturalized throughout the colon3\'' 



AYLAX LACINIATUS (Gillette) 



The writer collected these galls in the flower heads of Silphium 

 laciniatuTn at Glen View, 111., on September 3, 1914. They were 

 kept in greenhouse during winter and adults emerged before April 

 27, much earlier than would have been the case out-of-doors. 



AYLAX TARAXACI (Ashmead) 



This species producing galls on petiole, midrib and flower stalk 

 of the dandelion was described from Winona, Minn., and has been 

 reported from Ontario by Cosens and at Hudson Falls, N. Y., by 

 Felt. The gall has long been known in Europe. The writer has 

 collected galls at Medina, N. Y., in Illinois at Evanston, Wilmette, 

 and near Ottawa, and in Iowa at Davenport and Ames. The galls 

 are most noticeable in June when they are green and fleshy but they 

 should not be gathered for rearing until they have turned brown in 

 the fall. Galls collected at Wilmette in September and kept out-of- 

 doors during the winter gave flies in numbers on June 1, 1918. A 

 visit to the same locality on June 7, 1919, showed both old galls and 

 fresh ones about half -grown. 



AULACmEA HARRINGTONI (Ashmead) 



Aulax liarringtoni Ashmead, Trans. Amer. Ent. Soc, voL 14, 1887, p. 146. 

 Aulax bicolor Gillette, Bull. 111. St. Lab. Nat. Hist., vol. 3, 1891, p. 201. 

 Aulax mulycdiicola Ashmead, Jouni. Ciuciiinatl Soc. Nat. Hist., vol. 17, 1895, 



p. 36. 

 Aulax cavicola Ashmead, Proe. U. S. Nat. Mus., vol. 19, 1896, p. 134. 



Beutenmueller in 1910 wrote that the type of harringtoni was in 

 the National Museum. The species was described from a single 

 captured female sent to Ashmead by W. H. Harrington of Ottawa, 

 Canada and through the kindness of H. L. Viereck we have recently 

 learned that the Entomological Branch of the Department of Agri- 

 culture at Ottawa has a specimen labeled in Harrington's hand 

 "Aulax Harringtoni Ashm. nov. sp." which must be the type. This 

 specimen is an Aulacidea and Mr. Viereck has run it through a 

 provisional key to the species and compared it with paratypes of 

 mulgedilcola and yodagrae and Avith determined specimens of tuiiiida 

 and avibrosidccola and " can see no difference between the paratypes 

 of mulgedilcola and the type of liarnngtoni. Beutenmueller has 

 examined the types of hicolor Gillette and says they are the same as 



