Viscount Walden on a new Species o/'Porzana. 47 



the genus in their ' Genera of Recent Mollusca,' vol. i. 

 p. 322. 



I am unable to find where the above two species have been 

 described. Can the former be Moyioceros imhricatum^ Lamk., 

 from the above locality ? and can the latter be a mistake for 

 nigra^ Quoy ? 



In the sixth volume of the ' Zoological Record,' p. 549, 

 Von Martens mentions a species of Planaxis " from the Gulf 

 of Akaba, shortly described by Issel, Malac. Mar. Ross. 

 p. 196." 



Subgenus Holcostoma. 



Holcostoma piligerum. B.M. 



planaxis pUiger, Philippi, Zeitschrift fiir Malak. 1848, p. 164. 

 Holcostoma setiqerum, A. Adams, Proc. Zool. Soc. 1853^ p. 174, pi. 20. 

 fig. 5. 



Hah. Mauritius. 

 Subgenus QuOYiA, Gray, Proc. Zool. Soc. 1847, p. 138. 



Quoyia decollata. 

 r & Gaimard, Voy. 



Proc. Zool. Soc. 184/ 

 Hah. New Guinea {Q. & G.), Philippines (Cuming). 



Harmxis decollata, Quoy & Gaimard, Voy. Astrolabe, vol. ii. p. 489, 



pi. 33. tigs. 33, 34. 

 Quoyia decollata, Gray, Proc. Zool. Soc. 1847, p. 138. no. 59. 



IV. — Description of a new Species ofVoYzscndiffom the Hima- 

 layas. By Arthur, Viscount Walden, P.Z.S. 



Porzana hicolor^ n. sp. 



Chin greyish white, passing into pure grey on the throat ; 

 entire head, throat, neck, breast, abdomen, flanks, and thigh- 

 coverts ashy grey ; nape, back, uropygium, shoulder-coverts, 

 and scapulars ferruginous olive ; tail, upper and lower tail- 

 coverts dark slate-colour, almost black ; quills above ash- 

 coloured, washed with light brown, underneath pale brown ; 

 under wing-coverts pale brown tinged with ashy ; shoulder 

 edge white, quill-shafts underneath white ; bill black at the 

 tip, dark green at base. Wing 4*50 inches; tarsus 1*50; 

 middle toe 1*50 ; hallux 0*37, nails not included ; bill from 

 gape 1'12, from forehead 0*87. 



This well marked and handsome rail was shot at Rungbee, 

 Darjeeling. 



