’s RIJKS MUSEUM VAN NATUURLIJKE HISTORIE — LEIDEN. 187 
1893. Sesarma picta Biirger. Zool. Jahrb. Syst., Bd. 7 p. 626 — Hong- 
kong and Amoy. 
1894. Sesarma picta Ortmann. Zool. Jahrb. Syst., Bd. 7 p. 725 — Loo- 
Choo Isles and Ousima. 
1895. Sesarma (Parasesarma) picta de Man. Zool. Jahrb. Syst., Bd. 9 D 
183 — description of type-specimens. 
1900. Sesarma pictum? Alcock. Journ. As. Soc. Bengal, v. 69 prt. 2 p. 
414 — Mergui Archipelago. 
1907. Sesarma picta Stimpson. Smithson. Inst. Miscell. Coll., v. 49 p. 
135 — Ousima. . 
1910. Sesarma pictum? Stebbing. S. A. Crust., prt. 5 p. 321 — no new 
locality. 
Specimens in the Museum '): 
2 o', 1 ©, Japan, Burger coll. (types of de Haan). 
All the records of this species from other localities than Japan or 
China seem to be uncertain: Ortmann and de Man (1895) have expressed 
their doubt about the record of Krauss, and de Man himself (1895) ap- 
pears inclined to reject his own determination of 1888, based on a single 
young ©. As it is this very specimen Alcock appears to have examined, 
and as, besides, Hilgendorf unites Ses. picta and Ses. affinis de Haan 
with Ses. quadrata Fabricius (= Ses. plicata Latreille), there is every 
reason to believe, that the present species is confined to the shores of 
Japan and China and does not live in the Indian Ocean ?). 
94. Sesarma (Parasesarma) plicata Latreille. 
1798. Cancer quadratus Fabricius. Suppl. Entom. Syst., p. 341 — E. India. 
nec Cancer quadratus Meuschen 1778 eee species 
of Sesarma? from America). 
nec Cancer quadratus Fabricius 1787 Mant. Insect. v. 1 p. 
315 (= Ocypoda sp.). 
) 
1) De Man (1888, p. 172) records a specimen of the Leiden Museum from Macassar, but 
in the collection it is referred truly to Ses. guadrata (= Ses. plicata). 
2) De Man (1888, p. 169) after examining a typical specimen (young Q) of A. Milne- 
Edwards of „Ses. gwadrata” declares this to be at any rate different from the genuine species of 
Fabricius, by its carapace „being almost exactly quadrate”. Does, then, this specimen belong to 
the same species, recorded by the authors here named from the Indian Ocean, and referred to 
Ses. picta, but probably representing a new form, closely related to the Japanese species? 
3) Cited after Rathbun (1907). According to Carus’ aud Engelmann’s Bibliotheca historico- 
naturalis F. C. Meuschen published an „Index Musei Gronoviani” in the year 1778. In the 
18th edition of Linne‘s Syst. nat. (1789), t. 1 prt. 5 p. 2966, Gmelin mentions a Cancer qua- 
dratus and cites Fabricius’ Mant. Insect. v. 1 p. 315 (from this we conclude that a species of 
Ocypode is meant); besides, Jamaica is given as the habitat of the species. 
