34 
tinctd, superné maculis rubido-fuscis numerosis, undatis, contin- 
gentibus, profuse et vivide pictd ; intis albd, marginibus (in adultd) 
castaneo-nitidis, crenatis ; epidermide crassd, pilosd. Alt. 4; 
long. 33; lat. 2. 
Hab. Guaymas, Gulf of California. 
This magnificent shell, which was brought from the above port by 
Mr. Babb, R.N., accords in some measure with Lamarck’s descrip- 
tion of his Pectunculus undulatus. ‘The figure in Delessert’s ‘ Recueil 
de Coquilles,’ however, of that shell, fully exhibits its specific differ- 
ence. 
PecruncuLus raripictus. Pect. testd suboblique cordatd, radiatim 
costatd, costis planis in medio sep? sulcatis ; costarum interstitiis 
profundis ; albd luteo-castaned, parce variegatd, intis albd, an- 
tice purpureo-tinctd. 
Hab. 
The ribs in this shell are peculiarly firm and squarely grooved out, 
as it were, and they are often slightly rutted about half-way up the 
middle. 
PrecruncuLus aurirLuus. ect. testd orbiculari-cordata, inequi- 
laterali,radiatim costatd, costis obsolete sulcatis ; albd, transversim 
auriflud, antice maculis aureis nigerrimo-fuscis marginatis. 
Hab. ? 
This new and beautiful shell may be easily recognised by its very 
bright orange painting. 
Precruncutus noxosEricus. Pect. testd suborbiculari, levi, albidd, 
multiradiatd, epidermide sericd indutd. 
Hab. ? 
The peculiar, close, velvety epidermis of this shell is alone suffi- 
cient to distinguish it. 
Mr. Fraser characterized two new species of Birds from Western 
Africa :— 
Mouscrreta Smitui. Muse. corpore pallide rufo; caudd, alisque 
nigrescentibus, cinereo-lavatis ; capite, collo, rostro, pedibusque 
nigris. 
hibit tot. 73 unc.; ale, 3 unc. 4 lin.; rostri, a rictu ad apicem, 
10 lin. ; caude, 3 unc. 10 lin. 
Hab. Western Africa. 
The dimension above given of the tail of this bird includes the 
two central feathers, which are about half an inch longer than either 
of the others; these latter, when spread out, form a segment of a 
circle, the outermost feathers being the shortest. The head and 
neck are glossy black, but in certain lights exhibit a slight bluish 
tint: the whole body and wing-coverts are of a rust-colour, for the 
most part pale, but assuming a decided and rich hue on the abdomen ; 
the tail and feathers of flight in the wings are of a deep brownish 
gray, but inclining to black. The bill is stout. 
