22 bulletin: museum of comparative zoology. 



bird is Lafresnaye's P. diabolica. Computing Kuhl's meftsurements 

 of P. haedtata on the basis of the "Pied du Roi" and the "Frankfurt 

 A. M. inch," and assuming thatKuhl, as a student of Temminck, used 

 the French system of measurements, he comes to the conclusion that 

 Kuhl's P. hacsitata applies to the smaller bird and accordingly re- 

 stricts the name in that sense. 



Fortunately Kuhl's type is available to-day in the Leyden Museum. 

 It was listed with another specimen by Schlegel (Mus. Pays-Bas. 

 Mon. Procellariae, 1863, p. 13) imder the name Procellaria haesitata 

 Kuhl. Schlegel gives measurements of both specimens, which indicate 

 a large bird. 



Dr. E. D. van Oort of the Leyden Museum, at our request, has very 

 kindly examined Kuhl's specimens, and whites us as follows: — 



"There are in the collection of our Museum two specimens of 

 Aestrdata hacsitata (Kuhl), both originally labelled by Temminck: 

 Procellaria hasitaia, Mers de I'lnde. They are both the types of 

 Procellaria hacsitata Kuhl (Beitr. 1820, p. 142) and of Procellaria hasi- 

 tata in Temminck's PI. col. V, 1826, pi. 416. Temminck's plate, 

 however, is not correct, the upper tail coverts, as well as the under 

 tail coverts, being pure white, not grey. The two specimens are 

 exactly alike. Schlegel mentions these in his catalogue of the Pro- 

 cellariae (Mus. Pays-Bas, Proc, Procellaria hacsitata, p. 14) but he 

 wrongly designates only No. 1 as the type of the species, and changes 

 Temminck's locahty "Mers de I'lnde" into "Ocean." 



"The measurements of the two specimens are: — 



Schlegel's Cat. No. 1 No. 2. 



" In my opinion haesitata and diabolica are the same." 

 It is ev-ident from the above that Kuhl's cotypes are both large 

 birds agreeing very well in size Avith the types of P. diabolica, except 

 that the wing measurement is even greater. We agree with Dr. 

 van Oort that P. haesitata Kuhl and P. diabolica Lafresnaye are the 

 same. Obviously the name haesitata should be used for the species. 



