THE CANADIAN ENTOMOLOGIST 259 



1871 — Eaton, A. E. : A Monograph of the Ephemerida?. Trans. 

 Ent. Soc, London, 1871, p. 125. 



1874 — McLachlan, R.: Oniscigaster wakefieldi. Ent. Mag. X, 

 p. 108. 



1875 — McLachlan, R.: On Oniscigaster wakefieldi. J. Linn. 

 Soc. Zool. XII, p. 139. 



1888— Eaton, A. E.: Rev. Monog. Recent Ephemeridae or 

 Mayflies. Trans. Linn. Soc. 2nd series, Vol. Ill, Zool., p. 214. 



1899 — Eaton, A. E.: An Annotated list of the Ephemeridae of 

 New Zealand. Trans. Ent. Soc. London, 1899, part III, p. 292. 



1901 — Needham, J. G.: Aquatic insects of the Adirondacks, 

 N. Y. State Mus. Bull. 47, p. 423. 



1905— Needham, J. G.: Mayflies and Midges. N. Y. State 

 Mus. Bull. 86, p. 25. 



1908 — Needham, J. G.: Studies of aquatic insects. N. Y. 

 State Mus. Bull 134, p. 71. 



1911— Morgan, Anna H.: Mayflies of Fall Creek. Ann. Ent. 

 Soc. Amer. IV, p. 116. 



1913^Morgan, Anna H.: A Contribution to the Biology of 

 Mayflies. Ann. Ent. Soc. Amer. VI, p. 371. 



1913 — Clemens, W. A.: New Species and life histories of 

 Mayflies. Canad. Entomol. XLV, p. 338. 



Explanation of Plates. 

 Plate IX. 

 Fig. 1. — Genitalia male Siphlomiriis occidentalis. 

 Fig. 2. — Genitalia male Siphlonuriis minis. 



