﻿President's Address. 



13 



Class and Sub-Class. 



recorded from 

 Forth. 



Estimated Number 

 in Area. 



oarcoclma ; — 







Rhizopoda, ..... 





ADOUt oUU 



Heliozoa, ..... 



4 



20- 25 



Radiolaria, ..... 







Dnnbtfiil if anv 



Sporozoa, ...... 



2 or 3 



200-250 



Flagellata (Mastigophora), . 



31 



120-150 



Infusoria : — 







Ciliata, ...... 



40 



150-200 



Suctoria (Acinetaria), 



3 



10- 15 



Total Protozoa, 



306 



say 800-900 



PORIFERA. 



Much work remains to be done among the Sponges before 

 anything like a satisfactory list can be drawn up. A few 

 early records are due to Dr R. E. Grant (1826, etc.)^ and 

 Dr Fleming {British Animals, 1828). In Bowerbank's 

 British Sjpongiadce, " Firth of Forth " is cited as a locality 

 in the case of 12 species, 6 being in vol. ii. (1866) 

 and 6 in vol. iv. (1882); and several, including the type 

 of Amorphina paciscens, Schmidt, were collected in the Firth, 

 in 1872, by the German iSTorth Sea Expedition. 



Leslie and Herdman, in their ' Invertebrate Fauna of the 

 Firth of Forth' (1881), give only 12 Porifera, but o of 

 those specified in vol. ii. of Bowerbank's Monograph, 

 namely, Hymeniacidon thomasii, Bwk. (from Black Eocks, 

 Leith, Capt. Thomas, E.X.), H. incrustans, Johnst., Isodidyct 

 cinerea (Grant), Chalina cervicornis (Johnst.), and C. seriata 

 (Grant), do not seem to be accounted for. I leave, however, 

 the question of possible synonyms, and the revision of the 

 nomenclature in general, to the compiler of the next list.^ 

 From vol. iv. (1882) of the Monograph we get 2 additions, 

 Hcdichondria coralloides, Bwk. (found by D. Robertson), and 

 Ascandra complicata (Mont.) = Leucosolenia hotryoides, E. & S. 

 (obtained by Allman). Then J. E. Henderson, in 1884 (l.c), 

 recorded 3 further additions, namely, Ascandra variabilis, 

 Haeckel, Isodictya fucorum (Johnst.), and Suberites ficus 



^ Edin. Phil. Jour., xiv. (1826); Edin. New Phil. Jour., i. (1826), and 

 ii. (1827); etc. Cf. in this matter, Hanitsch, Trans. Liverp. Biol. Soc, 

 viii. p. 173, and re. Fresh-water species, Irish Nat., 1895. 



VOL. XVII. B 



