CETJBIACEA. 179 



contains not only the results of his own previous researches on the 

 Australian Stalk- and Sessile-eyed Crustacea (which are to be found 

 in a series of papers communicated to the Linnean Society of New 

 South Wales *, wherein a very considerable number of species new 

 to science are described and illustrated), but also gathers into a form 

 convenient for reference nearly all the work of earlier authors — ^not 

 merely what is contained in the special memoirs referred to above, 

 but also the numerous Australian species described and incidentally 

 noticed in the publications of A. White, Spence Bate, A. Milne- 

 Edwards, and others, or in my own papers. 



In this Catalogue no fewer than 540 species of Podophthalmious 

 and Edriophthalmious Crustacea are described ; but, large as this 

 number may appear, it is necessarily very far from being a complete 

 enumeration of the Stalk- and Sessile-eyed Crustacea of this great 

 continent, which presents in its different regions such diverse con- 

 ditions of temperature and climate. This wiU appear from the 

 large number of species described in the following pages, which are 

 either new to science or not included in the 'Catalogue'; and I 

 may add that, had time and opportunity allowed, it would hava 

 been possible to largely add to the list of unrecorded Australiaa 

 species from the rich material accumulated in the National Collection 

 adone. 



In the present memoir 203 species and well-marked varieties of 

 Crustacea and Pycnogonida are enumerated from the Australian 

 seas, besides several which are described or incidentally referred to, 

 but which do not belong to the Australian fauna. Porty-five new 

 or undescribed species and ten varieties are described for the first 

 time ; while of the total number (193 in all) of species and varieties 

 of Australian Podophthalmia and Edriophthalmia noticed in the 

 following pages, ninety-six are not included in Mr. HasweU's cata- 

 logue. Among, the species described as new are several to which 

 White applied spedfic names but never characterized ; these names 

 have been, of course, adopted. Besides the new species, several 

 hitherto very imperfectly known from the existing descriptions (and 

 therefore only to be identified with some uncertainty) have been 

 redescribed and illustrated. 



Geographical Distribution. — As regards the geographical range of 

 the species, I have not thought it necessary (nor,vindeed, would it 

 be possible within the limits of this Eeport) to give aU the Mtherta 

 recorded localities, many of them being common and widely-ranging 

 Oriental forms which occur (or may occur) on every coast-line 

 within the wide Indo-Pacifio or Oriental region. FuU particulars, 

 however, are given of the Australian localities, and many are now 

 for the first time recorded on the authority of specimens in the 

 British-Museum collection obtained by the naturalists of H.M.SS. 

 'Kattlesnake' and 'Herald,' and by the late Messrs. Dring, J. B. 

 Jukes, and other gentlemen, by whose zeal and. discrimination 

 our National Collection has so greatly benefited. In the case 



» Journal of the Lmnean Society of N. S. Wales, iii.-Ti. (1879-82). 



n2 



