Order PBOCELLABIIFORMES 
No. 109. 
Family PBOCELLABIIDJS. 
PRION VITTATUS MISSUS. 
AUSTRALIAN LONG-BILLED PRION. 
(Plate 92.)* 
Prion vittatus missus, subsp, n. ; West Australia ; Type no. 12,250 in my collection. 
Distribution. West Australian seas. 
Adult. In general coloration agreeing with members of the P. vittatus and H. desolatus 
groups, but differs from the former in its long, narrower bill, and from the latter in 
its much longer, broader biU. Oulmen (exp.) 36 mm., breadth 17.5 ; wing 193. 
This is the bird I have included in my Handlist, etc., as P. hanksi, but 
examination of the type of that species proves the latter to belong to the 
next group. 
From the Crozets, Marion Island, etc., are birds which agree with this, but 
have the bill shorter and shghtly narrower. For these I propose the name 
Prion vittatus salvini, subsp. n. 
It should be noted that in the Proc. Zool. Soc. (Lend.), 1878, p. 739, Salvin 
placed such birds under Prion hanksi, writing : “ Without attempting to 
decide the questions as to how many species of Prion exist, I use the name 
P. hanksi for these birds, as their bills agree most nearly with that of the type 
of P. hanksi in the British Museum — 
a. Male, Marion I. 6. Female, near Crozets.” 
In the Cat. Birds Brit. Mus., Vol. XXV., p. 433, 1896, these were transferred 
to P. vittatus, and were so classed in the Monograph of the Petrels, constituting 
some of the “ puzzling specimens ” of the author. 
I should like to explain my treatment of these BroadbiUed Prions. I have 
recognised six subspecies, as follows : — 
P. V. vittatus Gmelin 
gouldi Mathews 
7nissus Mathews 
inacgillivrayi Mathews 
salvini Mathews 
keyteli Mathews 
New Zealand. 
East Australia. 
West Austraha. 
St. Paul’s Island. 
Crozets. 
Tristan d’Acunha. 
* The Plate is lettered Prion banksi. 
212 
