Report on the zoological collections made in the Indo-Pacific Ocean ...

302 COLLECTIONS PBOM MELANESIA.The inner ramus of the uropoda is less distinctly triangulate thanin the specimens in the British-Museum collection from the Philippinesand Swan Kiver*. The median lobe of the front is not at allprominent.Reference to this species is omitted in Mr. Haswell's Catalogue.4. Cirolana scMbdtei. (Plate XXXIII. fig. A.)Body narrow- oblong, microscopically punctulated, convex andHead closely encased in the first segment ofsmooth, as in G. rossii.the body, transverse, with scarcely any indication of a median interantennularyrostral point, anteriorly bordered with a transverse grooverunning parallel to and just behind the anterior margin ; there is asimilar groove bordering the posterior margin of the eyes. Thefirst segment of the body is longer than the following ; the posterolateralangles of the first four segments are rounded, those of thefifth to seventh segments are right angles. Five or six postabdominalsegments are visible in a dorsal view ; the first five are veryshort, the lateral angles of the second to fourth curve backward andare much prolonged and acute or subacute ; the terminal segmentis widest at base, and beyond this subtriangulate, with the lateralmargins converging in a gentle curve to the distal extremity, which isacute or subacute ; the margins in their distal half are ciliated andminutely serrated. The eyes, seen laterally, are oblong (as in C.rossii) ; they each occupy rather less than one third of the totallength of the front margin of the head, and extend but a short distanceover its inferior surface. The antennules reach nearly to, oreven a little beyond, the posterior margin of the head ; the joints ofthe peduncle are short, the first two slightly more dilated than thethird, the fiagellum composed of a great number of very short joints.The interantennal plate (" lamina frontalis ") lies between the basesof the antennae, its sides diverge slightly from the base to a pointsituate between the antennules and antenna?, where it bears a strongtooth ; beyond this its distal extremity is acute, and lies between butdoes not completely separate the antennules. The antennae aboutreach to the posterior margins of the fifth body-segment. Thefirst two joints of the peduncles are very short, the third and fourthsomewhat longer and robust, the fifth yet longer, but slenderer thanthe preceding ; the fiagellum is composed of a great number of joints(50-65). Tlae three posterior epimera have their postero-lateralangles prolonged and acute. None of the legs of the body areancoral. The ischium- and merus-joints in the first three pairs aredilated and dorsally produced. The margins of the third to fifthjoints in all the legs are clothed with stiff" setae ; the dactyli in allare but slightly curved. The bases of the uropoda are prolongedat their inner and distal angles into a strong spine ; the rami areciliated on the margins and acute at their apices, the outer muchnarrower and a little shorter than the inner, which reach a little* Vide Journ. Linn. Soc. xiii. p. 511, pi. xxiv. figs. 6-11 (1878).