35 131 
resemble M. elongata, Sws., for instance; and his statement of “The Gambia, West 
Africa” as the locality, also makes it doubtful whether the species he describes 
and figures is the same as that recorded from the Asiatic waters. Both RrEEvE and 
CLEssIN give “Hanley, Species Recent Shells” as the place where the species was 
first described; it is, however, not to be found there at all, and I have not suc- 
ceeded in discovering where HANLeEy’s original description is to be found. 
Modiola elongata, Sws. 
Modiola elongata, Swainson, Exotic Conchology, 1821, Part I. Second edit., 1841, p. 31, fig. 8. 
—— — _ REEVE, Conchol. icon., X, Modiola, Sp. 4. 
- Martini u. CyEmnivz, Conchyl. Cabin., VIII Bd., 3 Abth., p. 97, pl. 27, figs. 1—2. 
N. of Koh Kahdat, 4—5 fathoms, coarse sand (2). W. of Koh Chuen, soft 
clay and mud (*/2). 
Long. 45 mm. 
Distribution: — Moluccas, Aru Isl., Sorong (TAPPARONE CANEFRI), Jobi Isl. 
(Geelwinck Bay). 
Modiola Metcalfei, Hanl. 
Modiola Metcalfei, HANEY, Proc. Zool. Soc. London, XII, 1844, p. 14. 
— — — Catalogue of recent bivalve shells, p. 235, pl. 24, fig. 25. 
REEVE, Conchol. icon.. X, Modiola, Sp. 16. 
_ — — Martini u. CHemMnNitTz, Conchyl. Cabin., VIII, 3 Abth., p. 116, pl. 32, figs. 3—4. 
L. Mortet, Journal de Conchyl., vol. 37, 1889, p. 161. 
Islands in the Gulf of Siam (L. Moret). 
This species does not occur in the collections made by the Danish Expedition. 
Distribution: — Madras, Gulf of Manaar. — Philippines, China (Hongkong), 
Japan (Nagasaki), Malay Archip., Ratack Isls. (Marshall Isls.). 
Modiola plumescens, Dunk. 
(Pl. Hl, Figs. 13—14). 
Perna (Modiola) plumescens, DuNkER, Museum Godeffroy, Catalog IV, 1868, p. 115. — V, 1874, p. 175 (no 
description). 
Modiola tumescens, DUNKER, (CLESSIN) Martini u. CHEMNITZ, Conchyl. Cabin., VIII Bd., 3 Abth., p. 129, 
pl. 38, figs. 8—9. 
Common between Koh Kram and Koh Kut, 1—30 fathoms, sand and shells. 
Long. 3—30 mm. 
Distribution: — Viti and Samoa Isls. (DUNKER), Java, Amboina and Banda 
(Ep. v. MarTENS in litt.). 
I was at first of opinion, that the present species should most properly be 
referred to Mod. barbata L.,‘ which it greatly resembles in form and colour; for 
instance, the epidermal prolongations in my specimens agree exactly with those 
1 Taken at Japan by the Challenger Expedition. 
17% 
