DAPHNIADiE. 
63 
Daphniadae, though he mentions that a species had been 
observed before his time by Goedart, and named by him 
“ pou aquatique.” * In his 4 Historia Insectorum gene- 
ralis/ published at Utrecht in 1669, he gives a pretty full 
description of a species of Daphnia, which is evidently 
the Pulex. He calls it Pule x arboreus or arborescens, the 
first part of which name has been retained, and applied 
to this species, by most authors who have written since 
his time. His description is not very correct in some 
points ; for he says the beak is slender and pointed, and 
that it is by this sharp beak the animal draws up its food, 
as it were by suction, like other aquatic insects. He de- 
scribes, however, its motions very well, and mentions 
the animal as occurring frequently of a red colour, or 
of the hue of blood. This memoir of Swammerdam is 
republished in his ‘ Biblia Naturae/ where the same 
figures are also given. f 
Merrett, in his ‘ Bin ax rerum Britannicarum/ &c. 
London, 1677, mentions the Haphniae, or at least is said 
to intend them, by the following short description : 
“ Vermes minimi rubri, aquam stagnalem, colore san- 
guineo inficientes, unde vulgus dira portendit.” 
Francisco Redi, in his ‘ Osservazioni utorno agli ani- 
mali viventi che si trovano negli animali viventi/ Firenzi, 
1684, gives three figures of a species which Muller quotes 
as the Pulex (his Pennata), but which are so very bad, that 
it is difficult to make them out. He calls them by the 
name of “Animaletti aquatici.” In his ‘ Opere/ pub- 
lished at Napoli, 1687, he gives the same figures as in 
the former work, and mentions them as “ Tre animaletti 
aquatici, che vivorno nelli acqua stagnanti, e ne* pozzi, 
osservati col microscopia.” 
Bradley, in his ‘ Philosophical Account of the Works 
of Nature/ London, 1739, gives a long description of a 
* I have not seen any notice of this little creature in any work of Goedart 
that I have examined, and Straus remarks also that he had never been able 
to procure the work in which the notice of this insect occurs. 
T Vide Leyden edition, 1737. 
