77 



This species, which is rather larger than Mus musculus, was pre- 

 sented to the Zoological Society by E. W. A. Drummond Hay, Esq., 

 Corr. Mem., after whom I have taken the liberty of naming it. 



Mus Alleni. Mus auribus parvulis, caudd corpore cum capife, 

 longiore, corpore supra nigrescenti-fusco, subtiis cinereo ; pedibus 

 obscuris. 



unc. lin. 

 Longitudo ab apice rostri ad caudse basin. ... 1 9^ 



Cauda 1 11 



ab apice rostri ad basin auris .... 7 



tarsi digitorumque 7^ 



auris 3 



Hab. Fernando Po. 



This species is less than the harvest mouse {Mus messorius) , and 

 of a deeper colour than the common mouse {Mus musculus), being 

 in fact almost black. The ears are smaller in proportion, and more 

 distinctly clothed with hairs. The tail is very sparingly furnished 

 with minute hairs. The tarsi are covered with blackish hairs above; 

 the toes are dirty white. 



I have named the species after Lieut. W. AUen, R.N., Corr. Mem. 

 by whom it was discovered and presented to the Zoological Society. 



Mus Abbottii. Mus auribus mediocribus, caudd corpore cum 

 capite longiore ■ corpore supra intetisefusco, subtiis canescente ; 

 pedibus obscuris. 



unc. lin. 

 Longitudo ab apice rostri ad caudae basin. ... 1 6 



Cauda 1 11 



ab apice rostri ad basin auris .... 6^ 



tarsi digitorumque 1^ 



auris 4 



Hah. Trebizond. 



This species is less than the harvest mouse {Mus messorius), and 

 of a deeper colour than the Mus musculus, in which respects it agrees 

 with Mus Alleni ; from this, however, it may be distinguished by the 

 tail being longer in proportion, the ears larger, and the tarsi more 

 slender. It was presented to the Zoological Society by Keith E. 

 Abbott, Esq., Corr. Mem., after whom it has been named. 



Mr. Gould then continued the exhibition of Mr. Darwin's Birds, 

 a series of which were upon the table. One only among them was 

 considered new, a species belonging to the genus Pyrgita from the 

 island of St. lago. Mr. Gould characterized it under the name of 



Pyrgita Iagoensis. Pyr. summo capite, et maculd parvd gulari 

 intense nigrescenti-fuscis, strigd superciliari, collo, humeris dor- 

 soque intense castaneis, hujus plumis strigd fused centrali nota- 

 tis ; alis cauddqtie brunneis, tectricibus alarum mi?ioribus albis, 



