211 
4. AcHATINA scuLPTA, Pfr. A. testa conico-oblonga, solida, plicis 
longitudinalibus subarcuatis validis sculpta, straminea; spira re- 
gulariter attenuata, obtusa; anfr. 8 planiusculis, ultimo 4 longi- 
tudinis paulo superante, antice subascendente ; apertura subverti- 
cali, sinuato-ovali; columella breviter arcuata, oblique truncata ; 
perist. simplice, recto, margine dextro antrorsum subarcuato, co- 
lumellari tenuiter calloso. 
Long. 83, diam. 35 mill. 
Hab. Oahu, Sandwich Islands (Mr. Frick). 
5. ACHATINA comoreEnsis, Pfr. dA. testa ovato-turrita, solida, 
leviter et irregulariter striatula, sub epidermide decidua, fulva 
alba; spira elongata, apice obtusula ; anfr. 7, superis subplanis, 
penultimo convewxiore, ultimo 1 longitudinis paulo superante, basi 
subattenuato ; apertura subverticali, elliptica, basi subcanaliculata, 
columella ad basin aperture protracta, oblique subtruncata; perist. 
obtuso, marginibus callo crassiusculo junctis. 
Long. 34, diam. 13 mill. 
Hab. Comoro Islands. 
Nov. 27th, 1855. 
Dr. Gray, F.R.S., in the Chair. 
The following papers were read :— 
1. On a NEw Species OF SOMATERIA, AND THE FEMALE OF 
Lampronetta Fiscueri, Branpr. By G. R. Gray, F.L.S. 
ETC. 
(Aves, Pl. CVII.-CVIII.) 
I have the pleasure of exhibiting Mr. Adams’s drawing of a new 
species of Somateria, of which several specimens were collected by 
that gentleman during the voyage of H.M.S. Enterprise. The 
large drawing exhibits the male and female, while the lesser drawing 
contains, in addition to the two sexes, the male in change. It will 
at once be seen that this species is very similar to Somateria mollis- 
sma, but is easily distinguished from it by being larger, and by a 
black mark on the throat, which is like the one found on that part 
of the Somateria spectabilis ; and by the white longitudinal mark 
on the top of the head being narrower and thereby less conspicuous 
than that found on the head of Somateria mollissima; while the 
yellow on the sides of the head, which is tinged with green, extends 
below the black towards the eyes; the black is less rounded poste- 
riorly. The bill of the male also differs by being orange-yellow with 
a white nail; while that of the female is dusky green as in the com- 
