574 DR. O. FINSCH ON THE BIRDS OF RUK. [NoV. 16, 



"Crown of the head flat ; snout rather prominent, as long as the 

 diameter of the eye ; canthus rostraUs distinct ; nostril lateral and 

 beneath the latter ; at the end of the snout a linear farrow. Body 

 slender ; parotids flat and elongate ; tympanum hidden ; temporal 

 region, back, and sides covered with prominent warts ; beneath finely 

 granulate. Fingers and toes short ; the latter shortly webbed. No 

 tarsal fold ; palm with one, sole with two small tubercles." 



" Dark yellowish brown, with irregular longitudinal and transver- 

 sal black spots. Limbs irregularly barred. Belly brownish yellow, 

 marbled and spotted with black." 



"Total length 0030 m., length of head 0-008, breadth of 

 head 0009, fore hmb 0018, hand (to the tip of the third 

 finger) 0-006, hind limb 0-028, foot (to the tip of the fourth 

 toe) 0-083." 



Hub. Taita (East Africa). 

 Brussels, July 31, 1880. 



EXPL.VNATION OF THE PLATES. 

 Plate L. 



a. Bi'fo uiridis J . Noukouss. M. Lataste's collection. 



b. Uppersurfaceofheaclof $."1 ^ , J , f From the St. Petersburg 



c. „ „ d-J ■ I Museum. 



d. „ „ cj'. Copenhagen. Brussels Museum, 



Plate LI. 



a. Btifo mavHtanicits 2 . Algiers. M. Lataste's collection. . 



b, „ „ cS . Skull from above. Algiers. M. Lataste's 



collection. 

 Plate LII. 

 Bufo regularis, var. B, 5 • Cape of Good Hope. Paris Museum. 



2. A List of the Birds of the Island of Riik in the Central 

 Carolines. By Otto Finsch, Ph.D., C.M.Z.S., &c. 



[Eeceived August 12, 1880.] 



Ruk, Rug, or, as the natives call it, more correctly, Tug (Hogo- 

 leu of the older charts), is the most important island of the Central 

 Carolines. It consists of several low and high islands, surrounded 

 by a barrier-reef. Of these islands Tol and Ruk are the largest and 

 Jiighest, The zoology of this group of islands is very limited; and, 

 if I am right, Hombron and Jacquinot are the only naturalists who 

 have examined it. The ' Voyage au Pole Sud,' however, gives us 

 only three species of birds as occurring there — namely, Drymophila 

 rvgensis, Myiagra oceanica, and Calamoherpe syrinx; and no other 

 additions have been made since. During my stay on Ponapc it was 

 my privilege to inspect a considerable series of birds collected by 

 Mr. J. Kubary, who spent fourteen months in investigations and 

 collection^ on this island. I have thought it useful to give a short 



