113 



seated near its base. Length altogether 2 inches. Breadth ,] an 

 inch. Length of free part ^ of an inch. The palate was divided 

 by elevated transverse ridges into 8 furrows. 



" Pharynx spacious, and lined with a corrugated membrane. 

 (Esophagus narrow, its inner membrane being puckered longitudi- 

 nally. 



" The anterior surface of the thyroid cartilage was regularly con- 

 vex, but not so protuberant as in the phalangers ; nor did the os 

 hyoides play freely over it." 



Mr. Edward Burton, of Fort Pitt, Chatham, communicated a de- 

 scription of a small species of Pipra received from the Himalaya 

 mountains, and considered by Mr. Burton to be the first species of 

 this genus yet discovered in those regions. 



Genus Pipra, Linn. 



P. squalida, capite et cervice suprcL brunneis ; interscapulio, dorso, 

 alis et caudd viridescenti-brunneis ; hdc ad regionem subapicalem 

 brunned saturation, sed apice externo albo graciliter fimbriatd ; 

 alarum caudaque pogoniis externis olivaceo leviter tinctis; corpora 

 infra uhique albido. 



Mandibula superior fusca, inferior albida apice fusco. Pedes nigri. 



Longitudo 3^ poll. Ahe caudam sequantes. 



Hab. apud Montes Himalayenses. 



In Museo Medico-Militari, Chatham. 



The following observations on a species of Glaucus, referred to 

 the Glaucus hexapterygius, Cuvier, by George Bennett, Esq., F.L.S., 

 Corresponding Member of the Zoological Society, Surgeon and 

 Superintendent of the Australian Museum at Sydney, New South 

 Wales, were read. 



" On the 20th of April, 1835, during a voyage from England to 

 Sydney, New South Wales, in latitude 4° 26' N., and longitude 19° 

 30' W., with light airs and calms prevailing at the time, about 3 

 P.M., a number of damaged and perfect specimens of the Glaucus 

 hexapterygius, Cuv., were caught in the towing net. On being im- 

 mediately removed from the net and placed in a glass of sea water, 

 they resumed their vital actions and floated about in the liquid ele- 

 ment, exhibiting a brilliancy of colour and peculiarity of form, 

 which did not fail to excite the admiration of the beholders. 



" The back of the animal, as well as the upper surface of the fins 

 and digitated processes, and the upper portion of the head and tail, 

 was of a vivid purple colour, varying occasionally in its intensity ; 

 ap])earing brighter in colour when the animal was active or excited, 

 and deeper when remaining floating tranqmlly upon the surface of 

 the water. The abdomen, and under surface of the fins, are of a 

 beautiful pearly white colour, appearing as if it had been enamelled. 

 The usual length of my specimens, measured from the extremity of 



