19. PAGELLrs. 477 



i. Adult: not good state. 



k. Adiilt : stuffed. From Mr. Yarrell's Collection, 



I. Half-grown : skin. From Mr. Yarrell's Collection. 



m,n. Half- grown: stuffed. 



0. Half-grown: bad state : stuffed. 



p. Adult : skeleton : not good state. 



Monstrosity '1 13 inches long and 5^ inches high; the pectoral 

 reaches far beyond the origin of the anal. (See figure given by Yarrell.) 



q. Polpcrro. Presented by J. Couch, Esq. 



Skeleton. — The maxillarj' bone is oblong, with the anterior margin 

 nearly straight, and with the posterior convex and pi'ovided with a 

 notch ; the articular groove in which the palatine bone moves is 

 verj' shallow ; the articulation with the intermaxillary is near its 

 lower extremity. The intermaxillary is moderately strong, with the 

 posterior process shorter than the descending branch. The mandibula 

 somewhat elevated ; there is a free space between the dentary and 

 articular bones ; five or six small openings load into the rudimentary 

 muciferous channel. The head of the vomer is veiy broad, flat, tri- 

 angular, whilst the posterior part tapers and passes into the sharp 

 ridge of the basisphenoid. The palatine bones are narrow, situated 

 in a nearly vertical direction ; they terminate siiperiorly in a process, 

 rectangularly bent forwards for the junction with the maxiUary bone, 

 and reaching as far as the turbinal bone. The nasal (ethmoid) js 

 rather elongate, Avith two longitudinal impressions, in which are re- 

 ceived the processes of the intermaxillaiy bones. The turbinal bones 

 are provided with irregular grooves and cavities, and widened at both 

 extremities. The prajorbital is twice as long as wide, whilst the 

 remainder of the infraorbital ring is vcrj' narrow ; from the inside 

 of the prseoi'bital arises a comparatively small plate to support the 

 eyeball from beneath. The frontal bones are truncated anteriorly ; 

 their upper surface is slightly convex, and roughened by pores and 

 grooves. The occipital crest is moderate, and does not extend on the 

 frontal bones ; the two lateral crests, and especially the outer one, are 

 comparatively much more developed. The brain-capsule is slightly 

 compressed ; the basisphenoid has the usual large opening before 

 the occipital joint, and is compressed anteriorly into a sharp ridge. 

 The pra3operculum has a very low ridge, and the muciferous channel 

 is consequently nidinientary : the horizontal limb is shorter than the 

 vertical ; both meet at a rounded angle, which, like the whole margin, 

 is entirely smooth. The operculum is twice as high as \5dde, irregu- 

 larly quadrangular, with the upper side oblique, the posterior curved, 

 and with an acute lower angle ; there is an oblique bony ridge at its 

 inner surface. The suboperculum is nearly vertically situated ; the 

 interopereulum broad, with the lower margin rounded. The pubic 

 bones are of moderate length ; each is formed by three lamella), the 

 outer of which is the most feeble, and situated nearly in the same 

 plane with the interior ; both the bones diverge anteriorly. 



