100 



Proceedings of the Royal Physical Society. 



species was obtained by Captain M' Andrew in the stomach 

 of a haddock captured by him in the Firth of Forth in 1851. 1 

 But the list, notwithstanding these omissions, is of consider- 

 able value, as giving a fairly accurate summary of what at 

 that time was known concerning the Crustacea of the Forth 

 estuary. 



Contribution by Leslie and Herdman. 



The next important contribution to the literature of the 

 Forth Crustacea is contained in Leslie and Herdman's 

 Invertebrate Fauna of the Firth of Forth, published in 

 188 1. 2 The authors have not only given the results of a 

 large amount of original research, but they have incorporated, 

 along with their own discoveries, the species recorded by 

 previous observers, so that this work presents the most 

 complete account of the Invertebrata of the estuary published 

 up to that date. The list of Crustacea contained in it, 

 though limited to the two sub-classes Cirripedia and Mala- 

 costraca, is considerably extended, and would doubtless have 

 been much larger had the time at the disposal of the authors 

 permitted them to take up the Entomostraca as well; but 

 the animals belonging to this sub- class are, for the most 

 part, microscopic, and on that account, and also because of 

 their great numbers and variety, require a considerable 

 amount of time and patience for their successful study. 



Ninety-seven species of Crustacea are recorded in Leslie 

 and Herdman's Catalogue, and they are arranged in the 

 following order : — 



V/J.iiJ.J^VVlJ.UI, 



Amphipoda, 



20 „ 



Isopoda, . 



10 „ 



Cumacea (Sympoda), 



7 „ 



Stomapoda (Schizopoda), 



4 „ 



Decapoda, 



44 „ 



Total, . 



97 „ 



1 Cf. Hist, of Brit. Crust., by Adam White (British Museum), published 

 1857, p. 99. 



2 Proc. Roy. Phys. Soc, vol. vi. pp. 68-95, 201-231, and 268-315. 



