123 



3- Lima {Lima) lischkei Lamy. (Plate III, figs. 25 — 28). 



1877. Lima japonica Dunker (non Sowerby), Malakozool. Blàtt., XXIV, p. 70. 



1882. Lim'a japonica Dunker, Ind. Moll. Mar. Japon., p. 245, pi. XI, figs.' 8, 9. 



1886. Lima dunker i Smith, "Challenger" Lamellibranchia, p. 291. 



1888. Lima diaikeri Sowerby, Proc. Zool. Soc. London, p. 208. 



1890. Lima [Limatnla) japonica Paetel, Cat. Conch. Samm., III, p. 237. 



191 1. Lima Dunkeri Pelseneer, "Siboga" Lamellibranches (Anat.), p. 33. 



1918. Lima [Lima) dunkeri Thiele in Martini, Chemn. Conch.-Cab., (N. F.), VII (2a) Limidae, 



p. 10, pi. II, figs. 6, 7. 



1930. Lima [Ctenoides] Lischkei Lamy, Journ. Conchyliol., LXXIV, p. 196. 



Smith was quite correct in assuming that the species referred as L. japonica by Dunker 

 was not the same as Sowerby's species of this name, and as the species represented an undescribed 

 form he suggested the name L. dunkeri for it, but since this name is preoccupied Lamy has 

 replaced it by L. [L.) lischkei. The species, as Thiele pointed out, is closely alHed to L. tenera., 

 but its shell is more arched, less obHque, and the sculpture is much finer. 



Distribution : — L. {L.) lischkei has so far been recorded from Japan and the Philippines 

 in the Pacific, and Mauritius in the Indian Océan. 



In the "Siboga" collection it is represented by a large number of shells from near reef 

 of Batjulmati, Java (St. 7), Western entrance, Samau Strait (St. 59), St. 95 (5° 43''. 5 N,, 1 19° 40' E., 

 depth 522 mètres). St. 98 (6°9'N., i20°2i'E., depth 350 mètres), Saleyer Anchorage (St. 213), 

 Banda Anchorage (St. 240) and 2.3 miles N., 63° W. from North Point of Nuhu Jaan, Kei 

 Islands (St. 260). 



4. Lima {Lima) tomlini sp. nov. (Plate III, figs. 29 — 31). 



1885. Lima lata Smith (ex parte), "Challenger" Lamellibranchia, p. 287. 



191 1. Lima lata Pelseneer, "Siboga" Lamellibranches (Anat.), p. 34, pi. X, fig. 4. 



I am convinced after a careful comparison of the unique type-shell of L. lata from 

 St. 109, St. Pauls Rock (depth 104 fathoms), mid Atlantic, with the two young shells from 

 St. 201, west side of Mindanao, the Philippines (depth 82 fathoms), which were also considered 

 by the author to be young shells of this species, that the Philippine form is quite distinct from 

 the Atlantic L. lata, and belongs to an hitherto undescribed species for which I propose the 

 name Lima {Lima) tomlini. 



The following is a description of this species: — Shell small, thin, almost transparent, 

 very oblique, below anterior slope almost circular in outline, moderately swollen ; anterior slope 

 rather short, almost straight, greatly reduced anterior auricles nearly hidden in the heart-shaped 

 concavity of the front excavated area ; posterior auricles narrow but distinct; posterior slope 

 evenly arched, running imperceptibly into the ventral margin ; hinge-area very short, with a 

 short, subcentral, triangular ligamental pit ; sculpture consisting of 35 — 46 very regular, closely 

 placed and rounded ridges separated by almost linear interspaces, the ridges further bear several 

 rows of short, délicate, triangular spines more prominently on the distal halves of the shells ; 

 shell margin finely dentate. Colour white, inner surface polished, showing impressions of external 

 radial sculpture. 



