ig2 Cleland and Johnston, Red Blood Cells. [jsf'"Tan 



of the former, he says : — " The ' Cuckoo-Shrikes ' are commonly 

 placed near the Laniida, but are possibly connected with the 

 MuscicapidcB or the CorvidcB." Our findings would place them 

 near the Corvidce and not far from the LaniidcB, but remote 

 from the Muscicapidce. Amongst the families with red cells 

 of smaller size are the Turdidce (in which are included the 

 Sylviidce), Dicruridce, Oriolidce, and ParadiseidcB (including the 

 PtilonorhynchidcB). Evans says the last-named is undoubtedly 

 related to the Corvidce, which our figures (from one species) do not 

 seem to support. The smallest cells appear to be those of the 

 MeliphagidcB and the MuscicapidcB. 



Mammalia. 

 Our figures for mammals, consisting only of bats and marsupials, 

 are few. The former seem to vary a little, usually being from 

 4.5 to 7. Amongst the marsupials the red cells of Phascolarctus 

 were large for mammals, those of Mpyprymnus (g) a little smaller, 

 and those of Macroptis, Dasyurus, and Trichosuriis 5 to 7 

 Nucleated red cells were not uncommon in the marsupials — 

 perhaps an archaic trait. 



Measurements of Red Corpuscles. 



(Note. — The first cohimn, .v x y, refers to the length (,v) and breadth (y) 

 of the red cell, the second column referring similarly to the dimensions of 

 the nucleus.) 



FISH. 

 Dipnoi. 

 Ceratodus fovsteri . . 39 x 23 to 25 . . 14 x 9 to 10.5 



Elasmobranchii. 

 Chiloscylliiim sp. (dog 



shark) .. ..23x13.5 ..9x7 



Sphyrtia hides (hammer- 



