REPORT ON THE STOMATOPODA. 
63 
except as regards the following features. The median spine of the rostrum of Gonodac- 
tylus glabrous reaches halfway to the tips of the eyes (see fig. 7). The carapace almost 
completely covers the fifth thoracic somite. The transverse cervical suture crosses the 
middle line of the carapace close to its posterior edge. The postero-lateral angles of the 
third and fourth as well as the fifth abdominal somite rectangular. The sixth abdominal 
somite has no median carina. The marginal carime of this somite are not swollen, and 
the intermediate and submedian carinse are much less swollen than they are in Gonodac- 
tylus graphurus, especially towards their posterior ends (compare fig. 5 of PI. XIV. with 
fig. 4). The abdominal somites have no transverse or longitudinal sutures. The telson is 
nearly (xtr) as long as wide, and its various dorsal carime are all of them more sharply 
defined than they are in Gonodactylus graphurus , as will be seen by comparing fig. 5 with 
fig. 4, and they are very little or not at all swollen, so that the exposed spaces on the 
dorsal surface of the telson, between the carinse on the median elevation as well as 
those between the carinse on the lateral portions of the telson, are much wider than the 
carinse themselves. The outlines of the bases of the marginal spines of the telson are 
nearly straight, and they lack the swelling convex curves of the graceful outline of the 
telson of Gonodactylus graphurus. The dorsal surface of the basal joint of the uropod 
has only one acute spine, and the paddle of the exopodite is considerably less than half 
(It) as long as th e second joint, when measured on the dorsal surface. The tip of the 
second joint of the first antenna is exposed in front of the eye. In all other respects the 
species conforms to the general description of Gonodactylus graphurus. 
Locality . — The Challenger collection contains one female specimen from Samboangan 
Reefs. 
Size. — The total length from the tip of the rostrum to the middle point of the 
posterior edge of the telson is 2 x £y inches. 
Colour. — In the alcoholic specimen there is much less pigment than there is in 
Gonodactylus graphurus, and this is restricted to small sharply-defined symmetrical 
eye-like black spots, of which there are six in the cardiac area of the carapace, two on 
the sixth, and two on the seventh thoracic somite, four on the eighth, and six on each of 
the first five abdominal somites. 
Remarks . — This species may be recognised by its very close and striking resemblance 
to Gonodactylus graphurus, from which it may be distinguished without difficulty by 
the absence of sutures on the abdominal terga, by the absence of a median dorsal carina 
on the sixth abdominal somite, as well as by the fact that all the dorsal carinse on this 
somite and on the telson are more sharply defined and less swollen and rounded than 
they are in this species. 
While it is a little closer than Gonodactylus graphurus to Gonodactylus chiragra, 
there is little difficulty in distinguishing it from the latter species by the presence of six 
well-developed marginal spines upon the telson, and of four carinse upon the central 
