822 Messrs. Sclater and Mackwortli-Praed on [Ibis, 



The small Terns from the east Coast oi" Africa need a 

 good deal of examination, and a new species {^. novella) was 

 described from that region by Hartlaub, We nii-lit notti 

 also that there are not as yet in the Museum specimens in 

 winter plumage of S. balcenarum (unless South African 

 examples referred by Saunders to S. saundersi are that 

 species), which may and probably will be found to be very 

 siniihir to the forms of S. in'muta in winter. 



It may be worth noting that Boyd Alexander found 

 Little Terns on the Shari River in June, also that one or 

 two Somaliland examples are much more like the form from 

 western Europe which may very possibly nigrate or wander 

 through our limits. 



Sterna (Gelochelidon) nilotica nilotica. 



Sterna nilotica Gnielin, Syst. Nat. i. 1789, p. 606 : 

 Egypt (ex Hasselquist). 



Gelochelidon tiilotica Reich w. V. A. i. [>. 51. 



Sttrna anglica Montagu; Butler, Ibis, 1905, p. 382, 1908, 

 p. 256. 



[B. coll.] 1 White Nile Oct. 



[C. & L. coll.] 1 Hassauia Island, 1 El Geteina Jan. 

 W.N. ; 1 White Nile lat. 10|° N. U.N. 



The Gull-billed Tern is abundant in winter ; it is 

 interesting to note that the El Geteina bird is marked 

 ' Feeding on locusts in dry country.^' 



Sterna (Hydroprogne) caspia caspia. 



Sterna caspia Pallas, Nov. Couim. Acad. Sci. Imp. Petrop. 

 xiv. pt. i. 1770, p. 582: Caspian Sea; Reichw. V. A. i. 

 p. 56 ; Butler, Ibis, 1905, p. 382. 



[B. coll.] 1 Port Sudan 8 Ai)l. R.S. ; 2 Khartoum Feb. 

 & Apl. 15. 



[C. & L. coll.] 1 Port Sudan Dec. R.S. 



The Caspian Tern is common in winter, Mr. Butler also 

 observed one at Khartoum on July 8th. Should Lepechin's 

 names be considered truly binomial, this species should be 

 called Sterna tschegrava Lep. as this has priority over Pallas's 

 name by several pages, and indeed was described a month 

 earlier. 



