638 MR. W. F. R. WELDON ON THE [DcC. 18, 



14. Hyla aurantiaca, Daud. 



15. Hyla marmorata, Laur. 



The lighter parts of the sides of the belly, axilla, lowei suiface of 

 thighs, and interdigital membranes orange. 



16. Hyla parviceps, Blgr. 



17. Hyla rubra, Daud. 



Loins, sides of thighs, and inner side of tibia and tarsus orange- 

 yellow. 



18. Phyllomedusa perlata, sp. n. (Plate LVIII. fig. 4.) 



Tongue entire. Vomerine teeth none. Head very large ; snout 

 not longer than the diameter of the eye, vertically truncate ; loreal 

 region vertical ; interorbital space much broader than theupper eyelid ; 

 tympanum rather indistinct, about half the diameter of the eye. Fin- 

 gers free, first shorter than second, fourth shorter than third ; toes 

 free, first considerably longer than second ; disks of fingers and toes 

 small ; metatarsal tubercles indistinct. The hind Hmb being carried 

 forwards along the body, the tibio-tarsal articulation reaches hardly 

 to the eye. Skin smooth above ; parotoids large, flat ; a series of 

 small, pearl-like white tubercles from the eye to halfway down the 

 body ; belly and lower surface of thighs granulate. Purple above 

 (green during life) ; a white, dark-edged line along outer border of 

 forearm and tarsus ; throat purple ; lips white-bordered ; the rest 

 of the lower surfaces white. From snout to vent 23 millim. 



A single young specimen. 



4. On some Points in the Anatomy of Phmnicopterus and its 

 Allies. By W. F. R. Weldon, B.A., Scholar of St. 

 John^s College, Cambridge, Assistant Demonstrator in 

 the Morphological Laboratory of the University. 



[Eeceived December 6, 1883.] 



(Plates LIX., LX.) 



During the past summer I have had an opportunity of dissecting 

 at the Society's Gardens a large number of Storks and a specimen 

 of the Euiopean Flamingo (^Phcenicopterus antiquorum), so that I 

 have been able to make a detailed comparison between the soft parts 

 of these creatures, the results of which I projDOse to describe in the 

 following paper. 



Respiratory System. 



The syrinx of Storks has, as a rule, no intrinsic muscles ; in 

 Leptoptilus, which I shall take as a type, it has the following 

 structure : — 



The last four bronchial rings (fig. 1, A.b,) are much enlarged, 



