Genus— FREGETTA. 
Fregetta Bonaparte, Comptes Rendus Sci. Paris, Vol. XLI., 
p. 1113, 1855 Type F. leucogastra. 
Cymodro 7 na Ridgway, Mem. Mus. Comp. Zool. Harvard, Vol. XIII., 
Pt. II., pp. 363, 418, 1884 Type F. leucogastra. 
Differs from Oceanites in having the middle toe subequal or less than the outer 
toe, and from Pelagodrmna in its very short toes. From both it is easily 
distinguished by the proportion of the basal phalanx of the middle toe, which 
in this genus exceeds the remaining joints and claw ; in the other two the 
reverse is the case. The tarsus may be booted or scuteUated ; the tail even, 
faintly emarginate, or deeply forked. The legs may be weak and long or very 
strong and powerful. This genus includes the species classed under Cyynodrmna 
in the Monograph, but if the standard adopted in separating Garrodia, Pealea, 
and Oceanites be accepted, three genera are here included. 
The type of Fregetta by original designation is F. leucogaster Gould. When 
Ridgway proposed Cy^nodro^na as a substitute for Fregetta, which he considered 
preoccupied by Fregata, he stated (in error) that F. tropica Gould was the type. 
It is fortunate that these two are absolutely congeneric. 
F. grallaria Vieillot, with which F. leucogaster Gould has been confounded, 
differs generically from the latter, exactly as Oceanites nereis differs from 
0. oceanicus. Consequently those who accept Garrodia as a valid genus must 
generically separate F. grallaria also, and for their use I introduce the genus 
Fregettornis nov. with type F. grallaria Vieillot. 
The species F. ^noestisshna Salvin differs from these much in the same 
manner that members of the genus Oceanodroina differ from Hydrdbates, and 
those who keep these distinct must likewise admit that a new genus must be 
utilised for this species. I therefore propose 
Nesofregetta nov., with type F. ^noestisshna Salvin,' 
and would attach here F. alhigularis Finsch. 
31 
