133 



" Tlius, as is commonly the case in the oval blood corpuscles of the 

 vertebrate animals, in these two examples the long diameter is not 

 equal to twice the short diameter, and it may therefore be concluded 

 that M. Mandl's remarks on the blood corpuscles of the CrocodilidcE 

 are not appHcable to the corpuscles of aU the species of this family. 

 So far, however, from doubting the accuracy of this physiologist's 

 observation on the blood of the Crocodilus Lucius. I am disposed to 

 regard the result of my observations, in connexion with the one which 

 he has made, as estabhshing a remarkable diflFerence in the blood cor- 

 puscles of one family of Reptiles, similar to the pecuharity which I 

 have found in the red particles of the Linnsean genus Strix. as well 

 as in those of the Columbidce." 



A collection of Birds from Tangiers, presented to the Society by 

 G. W. H. Drumraond Hay, Esq., was exhibited, and Mr. Hay fur- 

 nished the following list, accompanied with observations on the spe- 

 cies, which was read. 



Vulturfulvus, Linn. Arabic name, Nezer. 



" I shot this bird as he rose heavily from the top of a high rock, 

 near Cape Spartel, on the north coast of Africa, where he had been 

 gorging himself with the body of a dead kid. The species is rare in 

 these parts." 

 Neophron Percnopterus, Sav. Arabic name, Erhama. " Common." 



Aquila Chrysaetos, Vigors. Arabic name. El Oukab. 



" Very rare, but two specimens having been obtained for many 

 years past." 

 Pernis apivorus. Arabic name, Bourreh. 



" This species passes over the country about the beginning of the 

 spring in immense numbers, but is rare at other times." 

 Falco suhbuteo, Linn. Arabic name, Tier el Hor. 



" A very daring little bird, used by the Sultan for hawking : it is 

 common in the high lands." 



Falco Tinnunculus, Linn. Arabic name, Bouamira. " Very common." 

 Circus rufus, Bechst. Arabic name, Media. " Rare." 

 Alcedo ispida, Linn. Arabic name, Tier Teberni. " Common about 



the rivers." 

 Cnprimulgus Europaus, Linn. Arabic name, Terref el Aiyal. 



" Very common." 

 Merops Apiaster, Linn. Arabic name, Liamon. 



" In the grape season this bird is exceedingly abundant ; as many 

 as twenty or thirty have been shot at one time from a tree : it is 

 good eating, builds in holes in the ground, and sometimes uses rabbit- 

 burrows for the purpose : feeds upon bees, flying ants, wasps, &c. ; 

 has an undulating flight, and does not flap the wings much. Dis- 

 appears in the winter months." 

 Coracias garrula, Linn. Arabic name, Characrac, — a name which 



has reference to the noise which it makes. 



