reference of a specimen to a particular species depends entirely on the unsupported statement 

 of the author of the Memoir in question ; and it cannot be doubted that in a considerable 

 proportion of cases the determinations have been incorrect. 



In addition to the specimens collected by the 'Siboga' I have made special use of the 

 following collections : 



(i) A collection made by Dr A. C. Haddon in Torres Straits, 1888 — 1889. This formed 

 the subject of a paper by Kirkpatrick j ), and the specimens thus described are preserved in 

 the British Museum. A supplementary part of the Collection, which had not been examined, was 

 subsequently presented by Professor Haddon to the University Museum of Zoology, Cambridge 

 (Reg. Feb. 24, 1898), and was found to contain a number of species which had not been 

 recorded by Kirkpatrick. The specimens in the Cambridge collection are the ones which are 

 more particularly considered in the present Report. 



(2) Specimens from Singapore, presented to the Cambridge Museum by the late Professor 

 C. Stewart (Reg. April 26, 1899); the late Mr F. P. Bedford (Reg. Nov. 11, 1899); and 

 Dr R. Hanitsch (Reg. June 19, 1900). 



(3) A collection from Japan, in the neighbourhood of Tokyo, received at the Cambridge 

 Museum from Mr A. Owston (Reg. June 23, 1902). These are included only so far as they 

 appear to belong to the same species as those contained in the other Collections. 



1) Kirkpatrick, R., 1S90-. 



