23 119 
Coast of Koh Chick (*/2). Sound of Koh Chang, 3—5 fathoms, soft clay, very 
common, taken in great numbers. Coast of Lem Ngob ('/2). Between Koh Kut and 
Koh Kahdat, 10 fathoms, shells (?/2). 
Bangkok (Siam) Coll. Dautzenberg (P. FiscHEr loc. cit.). 
Long. 2—27 mm. 
Distribution: — Salanga, on the west coast of Malacca (v. MarTENsS). Mergui 
Archip. (PHILIPP!). 
It seems to me that there is a very close conformity and even transition, 
between the forms representing the series: — oblonga, Phil. — oblonga, Dunker! — 
nodifera, Martens? — paucigranosa, Dunker.* I feel practically certain that all 
these forms should be referred to one species. Anomalocardia pulchella, Dunker,'! 
is, no doubt, simply the present species. Puinippr’s statement? that “Die Area ist 
ganz vom schwarzen Ligament eingenommen” has, in Kope.t’s diagnosis (MARTINI 
u. CHEMNITZ, loc. cit.), been altered to “das schwarze glatte rautenformige Band 
lasst vornen und hinten ziemlich viel Raum frei;” this agrees also with the specimens 
from the Gulf of Siam. Ep. Lamy® considers A. oblonga, Phil., to be a form of 
A. granosa L, 
Arca (Anadara) subrubra, Dunk. 
Anomalocardia subrubra, DuNker, Novitates conchologicie, 1866, p. 83, No. 92, pl. 28, figs. 1—3. 
Arca (Anomalocardia) subrubra, DuNKER, Kosevr in Martini u. CHEMNITZ, Conchyl. Cabin., VIII, 2 Abth., 
p- 111, No. 83, pl. 29, figs. 4—5. 
— (Anadara) antiquata L. var. subrubra, DuNkeR, Lamy, Journ. de Conchyl., vol. 55, 1907, p. 200. 
Koh Chuen, 30 fathoms (7/2). 
Long. 13—15 mm. 
Distribution: — Philippines. 
1 Novitates conchologice, p. 85, pl. 29, figs. 7—9. recorded to have been taken at the Mergui Islands. 
2 Proc. Zool. Soc. London, part 28, 1860, p. 17. Marrint u. Cuemnitrz, Conchyl. Cabin., VII, 2 
Abth., p. 46, pl. 13, figs. 3—4. Recorded from Bangkok and Java by E. v. Marrens who (Zool. Ergebnisse 
ein. Reise in Niederland. Ost-Indien hrsg. v. M. Weber,” 1897, p. 228) states that it is sold as food in 
Bangkok, and that it lives in brackish water in these localities. It is a misprint when v. Marrens (loc. 
cit.) states, that A. nodifera is ‘17 mal so lang als hoch.” 
8 Novitates conchologicze, p. 85, pl. 29, figs. 10—12. Martini u. CHemnitrz, Conchyl. Cabin., VII, 2 
Abth., p. 100, pl. 27, figs. 1—2. Korerr is also of opinion (in the last-mentioned work) that A. pauci- 
granosa, Dunker is only a more feebly sculptured example of A. nodifera. Dunker records it from 
“Siam.” 
+ Novitates conchologicze, p. 113, pl. 38, figs. 6—9. Dunker records it from “Japan,” R. SrEARNS 
from the east coast of Nippon. As Reeve had already in 1844 employed the same specific name for 
an Arca (Acar) from the Mediterranean, DuNKER’s name must certainly be altered. (For the reasons 
which justify the adoption of Reeve’s name A. pulchella, for the Mediterranean species instead of A. 
imbricata, Poli, see “Bucquoy, Dautzenberg et Dollfuss, Les Mollusques mar, du Roussillon,” Il, p. 190). 
° Abbild. u. Beschreib. neuer od. wenig gekannt. Conchyl. (loc. cit.). 
® Journ. de Conchyl., vol. 52, 1904, p.160, and vol. 55, 1907, p. 210. 
