1913.] S. Kemp: Crustacea Stomatopoda of the Indo-Pacific Region. 141 
According to the description and figures which Pocock has given, this species 
differs from O. japonicus in the following features :— 
1. The rostrum is evenly rounded anteriorly from side to side and is twice (or 
according to the figure rather more than twice) as broad as long. 
2. The breadth of the corneal part of the eye is contained only a little more than 
three and a half times in the median length of the carapace excluding the 
rostrum. ‘The ophthalmic somite is exposed in dorsal view, and the dorsaj 
process is deeply excavate anteriorly. 
3. The antennal scale is a little shorter than the median length of the carapace. 
. The raptorial dactylus is armed with nine distinct teeth (including the ter- 
minal one ?). 
5. There are four pairs of longitudinal carinae on the sixth abdominal somite 
as in O. japonicus, but the feeble median keel found in that species is missing 
and the proximal tubercle, which is found in most other species between the 
lateral and outer intermediate carinae, is omitted, possibly by error, in 
Pocock’s figure. 
6. On the telson there is only a single submedian carina, the first lateral is absent 
and the second lateral instead of fusing with the marginal to form the lateral 
tooth as in O. scyllarus and japonicus is parallel to the edge and runs towards 
the outer margin of the intermediate tooth. 
ales 
The number of movable spines on the outer margin of the uropod is not given ; 
the distal spine is, however, said to reach to the apex of the ultimate segment. 
Pocock records a single female, 60 mm. in length, from the Macclesfield Bank, S. 
China Seas, in 35 fathoms. 
7. Odontodactylus latirostris, Borradaile. 
1907. Odontodactylus latirostris, Borradaile, Trans. Linn. Soc.. Zool. (2), XII, p. 212, pl. xxii, 
figs. 3, 3a. 
This species is perhaps not distinct from Odontodactylus hansent. Borradaile 
does not say anything of the affinities of his new form and was perhaps unaware of 
Pocock’s work at the time of writing. In the descriptions and figures which 
the two authors have supplied I am only able to detect the following trifling 
differences. : 
I. The rostrum is a little broader in O. lativostris than in O. hansenz, and its anterior 
margin is more definitely truncate. 
. The raptorial dactylus bears only seven teeth on its inner margin.’ 
. On the sixth abdominal somite there is the customary tubercle near the an- 
O wb 
! According to Borradaile’s description. In the figure, however, there appears to be an additional 
tooth lying close alongside the apex and a series of obscure serrations on the external maryin of the 
swollen basal part of the dactylus. The latter feature, which is not mentioned in the text, does not 
seem to occur in any other species of the genus. 
