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

—;CRUSTACEA. 299from Port MoUc, obtained on the beach (No. 92), at 5-15 fms.(No. 118), and 14 fms. (No. 93). Some of these (No. 95) are adultmales of large size. Also a small female from Port Denison,4 fms. (No. 111). All of the above are from Dr. Coppinger's firstcollection. Also a small male from Clairmont Island (No. 151),and two specimens from Thursday Island—a female from the beach(No. 167) and a male from a depth of 4-5 fms. (No. 165)—in thesecond collection.ISOPODA.1. Ligia gaudichaudii, var. australiensis, Dana?Here are somewhat doubtfully referred several specimens obtainedon the beach above high-water mark at Port Molle. Dana'sbrief diagnosis was based on imperfect specimens in which both theantenna; and uropoda are wanting; and as Mr. Haswell had seenno specimens of this species, and therefore adds nothing to ourknowledge about it in his Catalogue, the following description maybe useful :The body is oblong-oval, moderately convex, but little laterallydilated. The head is transverse, with its anterior margin convexlyrounded, without any median rostriform point, its upper surfacegranulated and transversely sulcated, one of the sulci runningparallel to the posterior margin, and others bordering the posteriormargin of the eyes. The segments of the thorax are rather indistinctlygranulated above ; the postero-latcral angles of the firstsegment are nearly right angles, those of the second and thirdslightly more acute, those of the fourth to seventh segments acute andposteriorly prolonged, yet not to so great a degree as in some speciesof the genus. The segments of the postabdomen are nearly smoothabove in the middle line, but granulated on the sides, and have asusual the postero-lateral angles acute and produced ; the posterolateralangles of the penultimate segment scarcely reach more thanhalfway to the apex of the corresponding angle of the terminalsegment. The terminal segment is longer than the precedingthe posterior margin has a very slight median prominence, and arather deep notch close to the postero-lateral spine ; the marginof the notch, although sometimes slightly sinuated, is not dentatedas in L. fjaudicliaudli; the postero-lateral spine is short and scarcelyreaches beyond the level of the posterior margin. The eyes arevery large, black. The minute antennules are not visible in a dorsalview. The antennae are shorter than the animal, and have thepenultimate and terminal joints of the antenna) slender and elongated,the terminal longer than the preceding joint ; the three precedingjoints are robust and much shorter ;the fiagellum composedof 26-30 joints ; the joints of the legs are clothed with short stiffsdce, which are most abundant on the inferior margins of the fourlast joints ; below the terminal claw is a second small subterminalone on all the legs. The terminal joint of the stem of the uropoda