1913.] S. Kemp: Crustacea Stomatopoda of the Indo-Pacific Region. 143 
On the telson (fig. 106) the carinae are similar to those of the two preceding species. 
The intermediates are continued to the apices of the submedian teeth, and the second 
lateral is parallel to the external edge and does not run to the tip of the lateral tooth. 
In the bifurcation between the submedian teeth there are twelve to sixteen pairs of 
minute spinules ; there are two sharp-pointed denticles between the submedians and 
intermediates and one between the intermediates and laterals. 
The outer of the two spines forming the bifurcate process of the uropod is one and a 
half times as long as the inner and reaches to the apex of the endopod. On the basal 
segment of the exopod there are ten or eleven (rarely nine) movable spines, the outer- 
most reaching almost or quite to the apex of the ultimate segment. 
The specimens in the collection vary considerably in length, but the proportional 
size of the eye remains approximately constant. ; 
There are seven examples of Odontodactylus southwelli in the Indian Museum :— 
ae Andamans. “ Investigator.’ 19,37mm. TYPE. 
af Andamans ; 53 fms. “ Investigator.’ Id, AN A eres PEELE 
we Off Cinque Is., Andamans ; 20 fms. ‘ Investigator.’ 12,22 mm. 
el Off Interview I., Andamans. ‘ Investigator.’ Gy eee 20) eat. 
a8 N. Cheval Paar, Ceylon. T. Southwell. I? ,2I mm. 
9. Odontodactylus brevirostris (Miers). 
1884. Gonodactylus brevirostris, Miers, Voy. H.M.S. ‘ Alert,’ p. 567, pl. lit, fig. C. 
1894. Odontodactylus brevirostris, Bigelow, Proc. U.S..Nat. Mus., XVII, p. 496. 
1906. Odontodactylus brevirostris, Tattersall, Ceylon Pearl Oyster Rep., V, p. 172, pl. ii, figs. 16-18, 
1907. Odontodactylus brevirostris, Borradaile, Trans. Iinn. Soc., Zool. (2), XII, p. 212. 
Odontodactylus brevirostris is easily distinguished from all other species of the same 
group (i.e. those with more than three teeth on the raptorial dactylus) by the complete 
absence of lateral carinae in the anterior part of the telson. 
The rostrum is more than two and a half times as wide as long, and its laterai and 
anterior margins form an evenly rounded curve. The middle of its distal margin is 
slightly depressed. The dorsal processes of the ophthalmic somite consist of a pair 
of upstanding triangular projections placed close together near the middle line and in 
dorsal view almost concealed by the rostrum. ‘he eyes are large. The breadth of the 
cornea is contained about two and a half times in the median length of the carapace, 
excluding the rostrum. 
The dactylus of the raptorial claw is only very slightly swollen at the base. It is 
sharply notched at the proximal end of its external margin and bears six to nine (usu- 
ally seven or eight) teeth, not reckoning the spinous apex. 
The lateral margins of the sixth and seventh thoracic somites are rounded, not 
truncate, and are of equal width. ‘The fourth and fifth abdominal somites are spinous 
at the postero-lateral angles and show feeble indications of a lateral depression similar 
to that noticed in O. scyllarus. . The sixth abdominal somite bears six longitudinal 
carinae all of which terminate in spines. The inner intermediate carina found in the 
