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 Conchyliorum': — 



1. Pholas laqueata. 2. Ph. Manill^e. 3. Ph. fragilis. 

 4. Ph. constricta. 



5. Ph. TEREDiNiFORMis. Ph. testd globosdy apertd^ in medio 

 divisd; anticb margine ventrali subangulatdy costis laqueatis 

 concentricis ornatd ; posticb brevi, laevigatd ; lamind dorsali und 

 subquadratd super marginem rejlexam testae 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 Pholades, 

 and are not found in Xylophagce. 



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 epidermidal 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, aperta, 

 antice angulatd posticb truncatd ; costis moniliferis radiatis et 

 lineis concentricis cancellatd; umbonibus 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 

 Imes of growth. It appears to be without accessory valves. 



Taken in Manilla Bay ; Cuming. 



10. Ph. SPATHLXATA. Ph. tcstd clongatd, clausd, obUquc divisd ; 

 parte anticd radiatim costatd subangulatd ; parte posticd con- 

 centric^ leviter striata, subtruncatd, ad margines integumento 

 protectd, ad terminos in cyatho corneo, lateribus spathuliformi- 

 bus, productd : ad umbones laminis duabus cequalibus postice 

 bilobatis, antice 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 



