100 Mr. II. Seebohm on the 



The Bonin Bush Warbler is very closely allied to Cetlia 

 cantillans, from which it does not differ in colour. 



The examples sent are four males and one young in first 

 plumage. The adults differ from adult examples of Cettia 

 cantillans in the following particulars : — 



Culmen "69 to "7 inch (instead of "5 to "6 inch), wing from 

 carpal joint 2"2 to 23 inches (instead of 21 to 2"28 inches), 

 tail 2"46 to 2"56 inches (instead of 2"0 to 2 3 inches), tarsus 

 •93 to "98 inch (instead of "89 to "9 inch). The length of 

 wing is about the same, but the culmen, tail, and tarsus are 

 longer. There are ten tail-feathers, of which the outer ones 

 are *4 inch shorter than the longest. The relative proportion 

 of the primaries is about the same in both species. 



Hapaloptehon familiare. 



Mr. Hoist has sent twelve examples of this curious little 

 Timeliine Warbler, which was originally discovered in 1828 

 on the Bonin Islands, and described under the name of Ixos 

 familiaris (Kittlitz, Mem. pres. h l'Acad. Imp. des Sciences 

 de St. Petersb. par divers Savans, 1830, p. 235). In 1848 it 

 was doubtfully referred to the genus lor a (Gray, Gen. B. i. 

 p. 199), and in 1854 the genus Apalopteron (scr. Hapalopteron) 

 was invented for its reception (Bonaparte, Compt. Rend, 

 xxxix. p. 59). This genus was degraded in 1869 to the rank 

 of a subgenus of Pycnonotus (Gray, Hand-list of Birds, i. 

 p. 271), but it is not known that any of these writers ever 

 saw an example. 



Until its affinities can be more accurately determined it is 

 probably wisest to allow it to remain in the genus which 

 Bonaparte created for it ; but it appears to be not distantly 

 related to Stachyrhis (a genus represented in Borneo) and to 

 Stachyrhidopsis (which is represented in Formosa) . Mr. Hoist 

 has sent examples of male, female, and young, which scarcely 

 differ in plumage. The bill is long, stout, and curved ; the 

 tarsus is long, and the feet are stout ; the nostrils are 

 covered by an operculum ; the rictal bristles are fairly well 

 developed ; the scutellation of the tarsus is very obscure ; the 

 wings are considerably concave ; the first primary is more 



