HALCTORNIS. 



181 



Family uxcektain. 

 Genus HALCYORNIS, Owen '. 



Founded upon the evidence of the hinder portion of the cranium, 

 which apparently agrees in general contour, and especially in the 

 size and relations of the temporal grooves, "svith the LaridcB, the 

 alleged absence of distinct supraorbital grooves seeming to be very 

 doubtful. 



There is no evidence whatever to support the view that this 

 genus is allied to the Alcedinida; ; and if the undermentioned 

 humerus be rightly referred the relationship to the LaridcE will be 

 evident. 



Haley ornis toliapicus (Konig"). 



Syn. Lams toliapicus, Konig^. 



The type and only described species. Somewhat smaller than 

 Larits ridihundus. 



Hah. Europe (England). 



A. 130. The hinder portion of the cranium _; from the London Clay 



{Fiij.) (Lower Eocene) of the Isle of Sheppey. The t3-pe ; figured 



by Konig in his ' Icones Foss. Rectiles,' pi. xvi. fig. 193, 



and also by Owen in his ' British Fossil Mammals and 



Birds,' p. 554, fig. 23L The wide separation of the 



Fig. 40. 



VHalcyornis ioliapicits (A) and Lams murinvs (B). — Palmar aspect of the distal 

 extremity of the left humerus. \. a, ulnar condyle ; b, radial ditto; c, 

 supracondylar depression ; d, ectepicondylar process. 



temporal grooves on the occipital aspect at once distin- 

 guishes this specimen from the skulls of the Alcedinidce ; 

 while the narrow interorbital bar is another feature in 



' Brit. Foss. Mamm. & Birds, p. 554 (lS4fi). 



* Icones Fo&«. Sectiles, pi. ivi. fig. 193 (1825). — Lams. 



' IjOc. cit. 



