cxxxvi 
INTRODUCTION. 
385. Xema Sabini Vol. V. PI. LXVII. 
Sabine’s Gull. 
An occasional visitor to our islands. 
Subfamily STERNIN^. 
In this subfamily are contained the various forms of Terns or Sea-Swallows as they are popularly termed. 
Ten species are figured under six genera : — Hijdroprogne, Actochelidon, Sterna, Sternula, Gelochelidon, and 
Hydrochelidon . 
Genus Hydroprogne. 
386. Hydroprogne caspia .......... Vol. V. PI. LXVIII. 
Caspian Tern. 
An accidental visitor. 
Genus Actochelidon. 
387. Actochelidon cantiaca .......... Vol. V. PI. LXIX. 
Sandwich Tern. 
A summer visitant and breeding bird. 
388. Actochelidon (?) velox. 
Swift-flying Tern. 
A specimen of this bird is said to have been killed in Ireland (see Blake Knox in the ‘ Zoologist ’ for 
1866). Strictly an eastern bird, and therefore not figured. 
Genus Sterna. 
389. Sterna hirundo ......... 
Common Tern. 
A resident species. Breeds in many parts of our southern coasts. 
390. Sterna paradisea ........ 
Roseate Tern. 
A summer visitant. Breeds sparingly on the Scilly and Fame Islands. 
Vol. V. PI. LXX. 
Vol. V. PI. LXXI. 
