1913.] S. Kemp: Crustacea Stomatopoda of the Indo-Pacific Region. 129 
ramus of the appendages of the sixth and seventh somites is broadly oval; that of the 
succeeding somite almost linear. 
The first five abdominal somites are not spinous at the postero-lateral angles ; 
the sixth is obliquely sulcated on either side with sharp postero-lateral spines. The 
telson bears seven dorsal spines in a transverse row near the posterior margin. Accord- 
ing to the figures the two outermost on either side are separated from one another and 
from the three median by a very distinct furrow which extends forwards half way to the 
anterior margin. ‘There are three pairs of large marginal teeth, the submedians being 
mobile. Between the submedians are ten to fourteen small spinules and there are three 
short spines between the submedians and the intermediate and one between the inter- 
mediate and the lateral. On the inferior surface there is a single spine behind the anus. 
The descriptions published contain no mention of any distinctive colouring. 
There can be little doubt that, as Chilton has suggested, Miers’ L. brazteri is’ 
synonymous with L. datifrons. De Haan states that there are seven dactylar teeth in 
the latter form, whereas Miers found six only in L. brazieri ; but, as Miss Rathbun 
has pointed out, six are shown on the right raptorial claw in De Haan’s figure. In 
Miss Rathbun’s example, which, like the type, was found in Japanese waters, both 
raptorial dactyli bear six teeth. 
Lysiosquilla latifrons seems to present some affinity with L. imsignis, but the two 
forms are readily distinguished by the characters afforded by the rostrum, eye, raptorial 
dactylus, sixth abdominal somite and telson. 
The largest of the known specimens is about 105 mm. in length. 
The species is recorded from Japan (De Haan), Nagasaki, Japan (Rathbun), Port 
Jackson, New South Wales (Miers), and from Otaki, New Zealand (Chilton). 
Genus Coronida, Brooks. 
1886. Coronida, Brooks, Voy. H.M.S. ‘ Challenger,’ XVI, Stomatop., p. 79. 
Carapace strongly, or scarcely at all, narrowed anteriorly, without carinae; 
aritero-lateral angles rounded ; gastric grooves distinct ; cervical groove almost 
obsolete, wholly absent mid-dorsally. Mandibular palp three-segmented or entirely 
absent. Merus of raptorial claw articulating terminally with ischium ; ventral sur- 
face of merus longitudinally hollowed throughout its length ; upper margin of pro- 
podus pectinate proximally along outer edge, distally with a pair of smooth blunt 
ridges; dactylus inflated at base, armed with teeth on inner margin. Shorter ramus 
of last three thoracic appendages linear, composed of two segments. Free thoracic 
somites without carinae. Abdominal somites depressed, first four without carinae 
or sculpture. Tast one or two abdominal somites and telson with elaborate orna- 
mentation consisting of close set spinules or of carinae and large tubercles, in the latter 
case a pair of submedian carinae on telson; telson semicircular in shape, marginal 
teeth minute. Ventral process of uropods consisting of a single strong spine with a 
much smaller spine on outer margin. 
There are no marked secondary sexual distinctions, 
