Zoological Society. 301 



Found in coral rock at low water. Isle of Zebu, Philippines ; Cu- 

 ming. 



The following new species of Pholas will be figured and described 

 in the forthcoming number of my 'Thesaurus ConchyUorum': — 



1. Pholas laqueata. 2. Ph. Manilla. 3. Ph. fragilis. 

 4. Ph. constricta. 



5. Ph. TEREDiNiFORMis. PA. testct glohosd, apertd, in medio 

 divisd ; antice margine ventrali subangulatd, costis laqueatis 

 concentricis ornatd ; postice brevi, Icevigatd ; lamind dorsali und 

 subquadratd super marginem refiexam testce positd. 



Although short, and with an angular opening, like the species of 

 the genus Xylophaga, this species and the following have the curved 

 subcardinal processes which are characteristic of the true Pholadea, 

 and are not found in XylophagcB. 



Found in cakes of floating wax on the coast of Cuba. 



6. Ph. aperta. 



7. Ph. Inch. This differs from the great Californian species 

 in the characters of the dorsal side of the anterior part, which is 

 finely striated in both directions ; in the epidemiidal laminae, which 

 are beautifully serrated ; and in the integumental covering of the 

 dorsal edge, which is divided into four parts. 



Collected by Capt. Ince, R.N., in coral rocks at Rain Island, Torres 

 Straits. 



8. Ph. multistriata. 



9. Ph. LATissiMA. Ph. testd subquadratd, subcompressd, apertd, 

 antice angulatd postich truncatd ; costis moniliferis radiatis et 

 lineis concentricis cancellatd ; umhonibiis subcentralibus mar- 

 gine dorsali rejlexo. 



A wide, rather flat shell, widely gaping in front, and truncated at 

 the posterior extremity, with radiating ribs forming knots on the raised 

 lines of growth. It appears to be mthout accessory valves. 



Taken in Manilla Bay ; Cuming. 



10. Ph. spathllata. Ph. testd elongatd, clausd, oblique divisd; 

 parte anticd radiatim costatd subangulatd ; parte posticd con- 

 centrice leviter striata, subtruncatd, ad margines integumento 

 protectd, ad terminos in cyatho corneo, lateribus spathuliformi- 

 bus, productd : ad umbones laminis duabtts aqualibus postice 

 bilobatis, antich elongatis. 



From New Zealand. 



Pholas Calva (Sowerby, Proc. Zool. Soc. 1834). 



I wish to call the attention of the Meeting to a remarkable speci- 

 men of Ph. calva in situ, which may be considered as bearing, in 

 some degree, upon the boring question in a manner somewhat un- 

 favourable to the ' rasping ' theory. In this specimen the animal 

 has lined the anterior narrow end of its hole with a thick laminated 

 tube, formed not of shelly matter, as in the case of Pholas tubifer, of 

 which I figure a specimen in situ, but of the same material as the 

 stone in which it has burrowed, and bearing every appearance of a 



