SELECTED NOTES FROM SOCIETY'S NOTE-BOOKS, 53 



labial or dermal appendages rather than oral, but in the mean- 

 time they are recognised as true teeth. 



Professor Owen described C. pectmatus as Ageleodus diadema. 

 The author of an important paper on the subject, which was laid 

 before the Odontological Society of London, appears to have 

 fallen more than once into the error here pointed out, his know- 

 ledge having been acquired simply by examining prepared 

 sections. (See Hancock and Atthey on "Remains of Reptiles 

 and Fishes in Northumbrian Coal Shales," in Nat. His. Trans. .^ 

 Northumberland and Durham, Part I., Vol. III., pp. 85 — 118). 

 Insight into development of the scales — pigment and its changes 

 — which (when viewed in connection with inflammation, the 

 changes involved therein, and their treatment) involve subjects 

 which must not even be glanced at here. All this, and more, may 

 be learnt from the study of the simple specimen before us. I want 

 you all to learn to read a slide like a book. 



Parasite of Vulture.— The Bearded Vulture is named by 

 Denny as being one of the habitats of the Louse common to the 

 FalconidcB. He gives a very interesting account of the habits of 

 the creature under Colpoccphalum flavescens. (M.A.B., p. 206; 

 PI. XVIII., Fig. 2.) A young Harpy Eagle, in the menagerie 

 of the Earl of Derby, at Knowsley, afforded him ample 

 opportunities for the study. The bird was noticed not to be 

 moulting kindly ; it eventually died. The hollows of the large 

 quill-feathers were found tilled with specimens of the insect, in all 

 its stages, both in the living stage, and an accumulation of 

 hundreds of cast skins. They appear to have selected this 

 retreat for performing the important operation of ecdysis, as we 

 know do many Crustacea in the like circumstances. Two circular 

 apertures, situated near the base of the quill (seat of its blood- 

 supply) afforded the animals access to the interior. The strong 

 stays for the jaws to work on, here flattened from their nearly 

 vertical position (and which must not be mistaken for a second 

 pair of jaws), the peculiar four-jointed antenna, the remarkable 

 eye-lashes, the maxillae, the gizzard teeth, and the male organs of 

 generation are the most noticeable features of this object. 



TuFFEN West. 



Selected 1Rotc6 from X\n Societ^'0 

 1Rote^Book6, 



Tongue of Cricket— The professional mounts oi" this object 

 are most beautiful, but certainly do not give one any idea of the 



