458 



MESSRS. SCLATER AND SALVIN 



[June 25, 



variegatis : subalaribiis rufis : long, tola lOo, al<e 5'8, cauda; 2'1 , 

 rostri a rictu I'ln, tarsi l"o5, dig. med. cum ungue 1*6. 

 Hub. accidentaliter in America boreali (Baird). 



245, et iii. 



Genus 5. Thyrorhina*. 

 Thyrorhina schomburgki. 



Crex schomburgki. Cab. in Schomb. Guian. ii. p. 

 p. 7G0; Scl. & Salv. P. Z. S. 18G8, p. 169. 



Micropygia schomburgki, Bp. C. R. xliii. p. 599. 

 Supra oHvacea albo guttata, his maculis albis nigra circumdalis : 

 subtus rubiginosa , gula albicante, abdomine medio albo : rostro 

 corneo, mandibulcB apice flavo : pedibus aurantiacis : long, tota 

 5'0, alee 3'3, caudfs r4, rostri a rictu 0"6, tarsi 0'85, dig. med. 

 cum ungue 0'9. 

 Hab. Brit. Guiana (Schomb.); Venezuela, Caripe (Goerinff) ; 

 Caraccas {Levraud, in Mus. Paris.). 

 Mus. S. & G. 



Fig. 1. 



Head (if Thyrurhma schombtirgki. 



The peculiar form of the nasal openings, which are partly covered 

 over in front by a horny membrane and are completely divided from 

 each other by a median septum, induces us to refer this sj)ecies to a 

 new geinis, tliese characters not occurring in any other American 

 form of Raliince. In other respects this little Crake agrees generally 

 with the smaller American species of Porzana. The form of the 

 wing corresponds nearly with that of P. noveboracensis, the second 

 and next three following primaries being nearly equal and longest, and 

 the external secondaries elongated, so as to be longer than the outer 

 primary. The toes are slender, the middle toe with its nail hardly 

 exceeding the tarsus in length. Tlie tibiae are feathered nearly 

 down to the joint. The tail is rather longer than is usual among the 

 smaller Rallidce, and not so much concealed by the coverts. 



Dr. Schlegel's Porzaria schomburgki (Mus. des P. B. Ral/i, p. 3/) 

 can hardly be of this species, if his description is correct f. It would 

 appear to be more like Sclater's P. erythrops, to which, therefore, 

 we have provisionally referred it. 



* Ovpds, i)orttt, et pis, 'iiasus. 



t De.ssus d'lin brun olivAtre. Dessous gris d'ardoise; bas ventre et sous- 

 cfiudales noires avec de.s bandelettes blanches. 



