126 



carinas versus arcuato, in canaU altd siiperni desinente, hitus sub- 

 striato, pallide carneo ; spird mediocri : long. 2^, lat. 2\ poli. 

 Hab. ad portum Sanctse Elenae in fissuris rupium. 

 This fine species, of which but very few were found by Mr. Cuming, 

 has the upper carination very much developed, the tubercles being 

 highly elevated and wavy, and thickly set vvith deeply imbricated fo- 

 liations, On the next carination, these characters are less strongly 

 marked ; and on the two lašt, the tubercles almostentirelydisappear. 

 The ridge formed by the basai canal is very prominent. — W. J. B. 



Genus Pectunculus. 



Pectunculus maculatus. Pect. testd orhiculatd, subauritd, sub- 

 (Equilaterd, convexd, albente castaneo-maculosd, striis radiantibus 

 subdecnssatis creberrimis ; intus albd, marginibus crenatis ; epi- 

 dermide fuscdyvillosd : long. 2^, alt. 2į, lat. \%poll. 

 Hab. in Fortu Portrero. 



The spots vary in different individuals ; but the colouring matter 

 appears to be very sparingly secreted as the animal advances in age, 

 while in very young specimens it greatly predominates. The shell 

 rapidly increases in convexity as it becomes older : \vhen very young, 

 it is comparatively lenticular. Found in fine gravel in eleven fathoms 

 vvater.— W. J. B. 



Pectunculus ovatus. Pect. testd obovatd, convexd, glabrd, lineis 



transversis viinutissimis, albente, umbonibus custaneo pallide nota- 



tis; intus albd, marginibus crenatis ; epidermide subvillosd : long. 



If, alt. -2, lat. lįpoll. 



Hab. ad insulam Lobos. 



Found in coarse sand at the depth of seventeen fathoms. — W. J. B. 



Pectunculus intermedius. Pect. testd stiborbia/latd, siibglabrd, 

 subdepressd,albidd, castaneo ttmbones versus pallide zonato-radiatd ; 

 striis radiantibus stibdistantibus, decussatis ; intus albd, margini- 

 bus crenatis ; epidermide subpilosd : long. \\, lat. lį, alt. liV 

 poli. 

 Hab. ad Iquiqui. 



In many specimens the pale chestnut radiating zones near the «m- 

 bones are effaced by decomposition. Found in coarse sand at a depth 

 of ten fathoms.— VV. J. B. 



At the request of the Chairman, Mr. Spooner read the following 

 Notės of the post mortem examination of the Dromedary, Camelus 

 Dromedarius, Linn., which lately died at the Society's Gardens. 



" On the cavity of the abdomen being laid open, several gallons of 

 serum escaped, intermixed with a large portion of coagulable lymph, 

 which, on a further investigation, appeared to have flovved from the 

 liver. This uiscus was constituted of one main lobe, liaving several 

 small lobuli extending from its posterior edge, by means of vvhich it 

 became attached to the right kidney : it was confined to the right 

 side of the spine. The posterior vena cava passed through its sub- 

 stance previously to piercing the diaphragm, situated to the right 

 side of which vein was the vena portcc. Tliere \vas no gall-bladdcr: 



