396 Records of the Indian Museum. [VoL our, 
exactly with these tints, were obtained and a few specimens of a 
bright red tone were also caught on occasions in which much red 
alga was brought up in the net. 
ase Port Blair, Andamans. S. Kemp. Twenty-four. 
The type specimens bear the numbers 9255-6/ro in the Indian 
Museum register. 
Genus Latreutes, Stimpson. 
Latreutes pygmaeus, Nobili. 
1914. Latreutes pygmaeus, Kemp, Rec. Ind. Mus., X, p. 99, pl. i, figs. 
7, 8; pl. ui, figs. 1-7. 
The species was very common in the vicinity of Ross I., 
living among weeds. Most of the females were ovigerous. 
9276 Port Blair, Andamans, S. Kemp. Many. 
Latreutes planirostris (de Haan). 
1907. Latreutes planirostris, de Man, Trans. Linn. Soc., Zool., (2), 
IDX jo dizi 
1914. Latreutes planirostris, Balss, Abhandl. math.-phys. Klasse K. 
Bayer. Akad. Wiss., Suppl. Bd. II, abh. 10, p. 46. 
This species is represented in the Museum collection by two 
female specimens, in both of which, as in those examined by Miss 
Rathbun,! the median spine in the posterior third of the carapace, 
figured by de Haan, is obsolete. 
Miss Rathbun cites L. mucronatus asa synonym of L. plani- 
vostvis, but this view is not held by Balss. L. flantrosiris is a 
larger species, with even more perfectly orbicular rostrum than in 
any examples of L. mucronatus that I have seen; the carapace, 
moreover, is carinate in the mid-dorsal line almost up to the pos- 
terior margin. 
Ssso Sagami Bay, Japan. Munich Mus. One, 25 mm. 
9367 Misaki, Japan. IKuma Aoki. One, 28 mm. 
Latreutes mucronatus (Stimpson). 
1914. Latreutes mucronatus, Kemp, Rec. Ind. Mus., X, p. 101, pl. in, 
figs. 8-15; pl. iv, figs. 1, 2. 
1914. Latveutes mucronatus, Balss, Abhandl. math.-phys. Klasse K. 
Bayer. Akad. Wiss., Suppl. Bd. I], abh. 10, p. 47, fig. 27. 
The additional specimens agree with those recorded from Kila- 
karai and Pamban in §. India, but are rather smaller ; the largest 
is only 10°5 mm. long and one of the five ovigerous females is less 
than 8 mm. in length. The remarkable sexual differences noted 
in the case of the S. Indian specimens are clearly shown in the 
Andaman series, the females have the carapace more strongly 
arched and the rostrum more orbicular than in the males. Out of 
a total of thirty individuals only five, all males, possess more than 
a single tooth on the carapace behind the orbit; in three specimens 

! Rathbun, Proc. U.S. Nat. Mus., XXV1, p. 46 (1902). 
