222 ZOOLOGISCHE MEDEDEELINGEN — DEEL III. 
D. Clistocoeloma A. Milne-Edwards 1873. 
1. Clistocoeloma balansae A. Milne Edwards. 
1873. Clistocoeloma balansae A. Milne-Edwards. Nouv. Arch. Mus. Paris, 
t. 9 p. 311, pl. 17 f. 1 — New Caledonia. 
1896. Clistocoeloma balansae de Man. Zool. Jahrb. Syst., Bd. 9 p. 340 
— description of type-specimens. 
1900. Clistocoeloma balansae Alcock. Journ. As. Soe. i v. 69 prt. 
2 p. 429 — Nicobars '). 
2. Clistocoeloma merguiense de Man. 
1888. Clistocoeloma merguiensis de Man. Journ. Linn. Soc. London, v. 
22 p. 195, pl. 13 f. 10 — Kisseraing Island (Mergui Archipelago). 
1890. Clistocoeloma mergwiensis? de Man. Notes Leyden Museum, v. 12 
p. 92 — Amboyna. 
1896—98. Clistocoeloma mergwiensis de Man. Zool. Jahrb. Syst., Bd. 9 
p. 339, Bd. 10 pl. 31 f. 40 — Penang. 
1900. Clistocoeloma merguiense Alcock. Journ. As. Soc. Bengal, v. 69 
prt. 2 p. 429 — Nicobars. 
Specimens in the Museum: 
1 ©, Amboina, Ludeking coll. 1863 (examined by de Man 1890). 
3. Clistocoeloma tectum (Rathbun). 
1914. Sesarma (Sesarma) tectum Rathbun. Proc. U. S. Nat. Mus., v. 47 
p. 78 — Port San Vicente, near Luzon (Philippines). 
Pl. XVII Fig. 3. 
This species has been recently made known by Miss Rathbun, who, 
however, erroneously referred it to Sesarma. I have examined a Q from 
Nias, belonging to the Amsterdam Zoological Museum and besides, 3 © 
and 1 ©’ collected by the ,Siboga’’-expedition in the Talaut Archipelago. 
As the G' has not yet been described, it is not without importance to 
put forth its principal features. 
The species belongs clearly to the present genus, on account of the 
outer antennae being completely excluded from the orbit 
by means of a triangular lobe rising from the inner part of the inferior 
orbital border and being nearly in contact with the lateral corner of the 
1) Judging from Alcock’s description I should think, that his specimens belong to CZ. tec- 
tum, as the carapace is said to be “boldly and symmetrically lobulated”. 
