416 Dr. A. S. Woodward on a new 



Hemihalictus lustrans (Ckll., 1897). 



Hah. Las Vegas, July 18, at flowers of Pyrrhopappus, 

 4 ? {A. Garlick). 



Phileremulus nanus, Ckll., 1895. 



Hah. Las Vegas, Aug. 7, about a patch of Chamcesaracha 

 coronopus, 1 ? {Ckll.). 



Perdita chamwsarachce, Ckll., 1896. 



Hah. Las Vegas, Aug. 1 , at flowers of Chamcesaracha 

 coronopus, 1 cJ, 1 ? {Ckll.). 



Mesilla Park, New Mexico, U.S.A., 

 Feb. 18, 1900. 



LV. — On a new Ostracoderm (Euphanerops longsevus) from 

 the Upper Devonian of Scaumenac Bay, Province of Quebec, 

 Canada. By A. Smith Woodward, LL.D., F.L.S. 



[Plate X. figs. 1, 1 a, 1 6.] 



Dr. Teaquair's recent memoir on new Silurian fishes from 

 Scotland * suggests the correct interpretation of a proble- 

 matical fish from the Upper Devonian of Canada which has 

 been for some years in the collection of the British Museum. 

 This specimen was obtained by J\lr. Jex from tiie well-known 

 fish-beds of Scaumenac Bay, in the Province of Quebec, 

 associated with species of Bothriolepis, Diplacanthus, Cocco- 

 steus, IScaumenacia, Glyptolepis, Eusthenopteron, and Cheiro- 

 lepisy which have been described by Whiteaves f , Traquair J, 

 and myself §. It is preserved in the counterpart halves of a 

 nodule, and the two sides are shown of the natural size in 

 PI. X. figs. 1, 1 a. 



As indicated by the best side of the fossil (fig. 1), the 

 anterior half of the fish is distorted and its precise contour is 

 destroyed, while the caudal region is well preserved in direct 



* Trans. Ptoy. Soc. Ediub. vol. xxxix. no. 32 (Dec. 1899). 



t J. F. Whiteaves, Trans. Roy. Soc. Canada, vol. iv. (1887) sect. iv. 

 p. 101, and ibid. vol. vi. (1888) sect. iv. p. 77. 



X R. H. Traquair, Geol. Mag. [3] vol. vii. (1890) p. 307, and ibid. 

 vol. X. (1893) p. 262. 



§ A. S. Woodward, Geol. Mag. [3] vol. ix. (1892) p. 482, 



