30 Memoirs of the Indian Museum. [Vor. IV, 
margins of the two succeeding somites are more narrowly rounded than in S. datreillei 
and the anterior spinous process found on the seventh somite of S. decorata is absent 
(fig. 5). The eighth somite is produced laterally as a rounded anterior lobe. 
Faint submedian and intermediate carinae are present on the last three thoracic 
and on all the abdominal somites. ‘The submedians are parallel and not posteriorly 
divergent as in the preceding species. On the 3rd, 4th and 5th somites there are ex- 
tremely faint traces of median tubercles. ‘The following carinae end in spines :— 
Carinag. Abdominal somites. 
Submedian ae an a 6. 
Intermediate re Le ae 5, 6. 
Lateral .. Ag a AS 5, 6. 
Marginal .. ae ne ah Lis 2595455510: 
The lateral carinae are semi-obsolete except on the 1st somite. ‘The submedian 
and intermediate carinae of the 6th somite are greatly swollen in the adult male. 
The form of the telson is astonishingly different in the two specimens examined. 
In the smaller femaie example (fig. 12), the median carina is obscurely notched near 
the base and terminates in a short spine. ‘he dorsal surface on either side is very 
finely rugose, but is otherwise smooth except for the lateral edge which is upturned 
proximally and for obscure elevations at the base of the submedian and intermediate 
teeth. The usual three pairs of marginal teeth are well developed and those of the 
submedian pair appear to have had movable tips. ‘There are two or three submedian 
denticles, six intermediate and one lateral. he praelateral denticle is missing. In the 
adult male, the type (fig. 11), the base of the submedian spines is greatly inflated, 
while from the intermediates two huge, swollen and internally curved ridges, higher 
than the median carina, extend backwards nearly as far as the antero-lateral corners. 
The submedian and intermediate spines are very blunt and the lateral spine and denticle 
are represented by two small nicks in the margin. ‘There are three or four submedian 
and six or seven intermediate denticles. ‘The median carina is obscurely notched at the 
base, the distal spine is non-existent and on either side, in the hollows between the 
three prominences, there are obscure indications of a longitudinal row of pits. The 
lateral margin is strongly upturned proximally. 
The bifurcate process from the base of the uropod resembles that of the preceding 
species, except that the spines on the inner margin are replaced by a row of fine 
serrations. 
The colouring of spirit specimens does not seem distinctive. 
There is one specimen in the Indian Museum :— 
= Buntal or Pulo Burong, Borneo. Sarawak Museum. 19, 48 mm. 
This individual was presented by Mr. J. C. Moulton, to whom I am also indebted 
for the opportunity of examining and figuring Nobili’s type specimen, the only other 
example known. The latter, a male 76 mm. in length, was found at Pulo Burong, 
Borneo. 
