22 



Dr. MacCulloch has also attributed it to the latter cause ; and 

 Btates that every marine animal that he has examined is luminous. 

 Assuming the observations of M. Bory de St. Vincent and those of 

 Dr. MacCulloch to be equally correct in the instances which fell 

 under their notice, it is worthy of inquiry whether any, and what, 

 differences exist in the luminosity of the ocean, when it is occasioned 

 by marine animals, or when it is owing to other causes. 



Mr. Yarrell exhibited a female of the common game Fowl which 

 had assumed the plumage of a male. The dull brown colour of 

 the breast was varied by an intermixture of the jet black plumage 

 peculiar to the male ; the feathers of the neck and those on the sides 

 of the tail were long, slender, hackled and bright in colour; all the 

 tail feathers were more or less curved ; and the spurs were half an 

 inch in length. This bird very closely resembled the representation 

 attached to Dr. Butter's paper on this subject in the third volume 

 of the " Memoirs of the Wernerian Society." A portion of the 

 body of the bird was also shown, the disease of the sexual organ 

 pointed out, and its appearance contrasted with preparations of the 

 same parts from healthy birds. The cause of this change in the 

 external character is fully detailed in John Hunter's " Animal Eco- 

 nomy," in the Wernerian Memoirs before mentioned, and in a paper 

 by Mr. Yarrell, published in the " Philosophical Transactions " for 

 1827. 



Mr. Vigors resumed the exhibition of the birds from the Hima- 

 layan Mountains, which he had commenced at the Meeting of the 

 23rd Nov. ; and named and characterized the following apparently 

 new species : 



Alcedo guttatus. Ale. crisiatus, supra ater, maculis rotundis 

 albis guttatim notatus ; subtus albus ; colli lateribus pectoreque 

 atro maculatis. 



Statura Ale. maximi. 



Muscipeta princeps. Muse, capite, collo, dorso summo, alls, 

 rectricibusque duabus mediis nigris ; corpore inferiori, dorso imo t 

 fascia lata alarum, maculis paucis remigum secundariarum, rec- 

 tricibusque lateralibus aurantio-coccineis ; rostro fortiori. 



Longitudo circiter 9 uncias. 



Lanius erythropterus. Mas. Lan. nucha dorsoque griseis ; 

 capite supra, alis, cauddque atris ; corpore subtus, strigd superci- 

 liari, remigumque apicibus albis ; alis macula latd rubrd notatis. 



Fcem. Capite griseo ; dorso, alis, rectricibusque virescenti-olivaceo 

 notatis ; harum apicibus flavis. 



Statura Lan. Collurionis. 



Parus monticolus. Par. capite, collo, pectore, abdomine medio, 

 alis, rectricibusque atris ; genarum macula latd nuchalique parvd, 

 tegminum remigum secundariarum rectricumque apicibus, et remi- 

 gum primariarum rectricumque later alium pogoniis externis albis ; 

 abdominis lateribus flavis. 



Statura paulo minor Par. majori. 



