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costd imbricatd unicd, parte anticd lyratd, radiatim costis acute 
imbricatis ornatd: valvd dextrd productd sublinguiformi, den- 
tibus acutis recurvis serratd: nucleo lamine terminalis valve 
sinistre triangulari, striatd, subcomplanatd. 
Found in soft stone, at half-tide. Island of Leyte; Cuming. 
TRIOMPHALIA PULCHERRIMA, Pl. V. f. 2, 2a, 6,¢,d. Tr. testd 
subovali ventricosd, antic? globosd, corrugatd, antice subatte- 
nuatd ; valvis transverse dimidiatis, parte posticd costis distan- 
tibus concentricé lyratd, parte anticd lineis lyratd, margine den- 
tibus acutis crispatis serratd : nucleo lamine terminalis valve 
sinistre subtriangulari, rotundo, lineis elevatis lyrato. 
This species is much larger than 7’. globosa, the ventral covering 
much more rough and inflated, the concentric ribs on the posterior 
part of the valves more strongly defined, and not crossed by the oblique 
row of raised points which is seen in the former species. 
Found in soft stone at low water at West Colombia; Cuming. 
TriompHaLia Cumineou, Pl. V. f. 3,3a. Tr. testd rotundd, 
crassd ; valvis postice canali divisis, concentricé lineis elevatis 
lyratis, antice costis minutis serratis radiatis ; parte posticd 
concentrice laminatd ; valvd dextrd posticé in lingulam triangu- 
larem margine triplicatam productd ; valvd sinistrd postice bre- 
vissimd margine terminali circulari. 
This shell would be completely spherical but for the linguiform ex- 
tension of the right valve. The left valve terminates in a circular mar- 
gin, where the rounded part of the right valve meets it. 
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. Puaoxas LAQuEaTA, Thes. Conch. Pl. CIII. f. 19, 20. 
Pu. Manitiz. Thes. Conch. Pl. CIII. f. 17, 18. 
Pu. rraciuis, Thes. Conch. Pl. CVIII. f. 92, 93. 
i. constricTa, Thes. Conch. Pl. CIV. f. 27, 28. 
Pu. rerepinirormis. Ph. testd globosd, apertd, in medio 
divisd; antice margine ventrali subangulatd, costis laqueatis 
concentricis ornatd ; postice brevi, levigatd ; lamind dorsali und 
subquadratd super marginem reflecam teste 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 Xylophage. 
Found in cakes of floating wax on the coast of Cuba. 
6. Pu. aperta, Thes. Conch. Pl. CVIII. f. 99, 100. 
7. Pu. Incr, Thes. Conch. Pl. CV. f. 45, 46. 
This differs from the great Californian species in the characters of 
No. CC.—Proceepines or THE ZOOLOGICAL SOCIETY. 
ob © tO 
rg 
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