1913J S.Kemp: Crustacea Stomatopoda of the I ndo-Paci fie 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. brazier i is 

 synonymous with L. latifrons. De Haan states that there are seven dactylar teeth in 

 the latter form, whereas Miers found six only in L. brazier i ; 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. insignis, 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. 



1.886. Coronida, Brooks, Voy. H.M.S. ' Challenger,' XVI, Stomatop., p. 79. 



Carapace strongly, or scarcely at all, narrowed anteriorly, without carinae ; 

 anterolateral 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. I^ast 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. 



