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

;CETTSTACEA. 219without definite locality, from the collection of the late Dr. Bleeker,and already referred to in my report on that collection,53. Pilumnus vespertilio (Fabr.).Five specimens were collected on the beach at Port Molle (Jfos. 95,103) (first collection). Prom the second collection are retained afemale from Thursday-Island beach (No. 167), a male from acoral-reef at Clairraont (No. 151), a female from West Island,Prince of Wales Channel (No. 149), and a small female from UundasStraits, N.W. Australia, ITfms. (No. 161). In nearly all the hairswith which the carapace is clothed are of a cinereous colour. Hessmentions its occurrence at Sydney. It is said by Mr. Haswell tobe common in Australia on coral-reefs.A yerj large series of specimens of this widely distributed speciesis in the Museum collection, from the following localities :—M;uiritius(Old Collection) ; Seychelles (Dr. E. P. Wright) ; Java (coll.Dr. Bleeker) ; Timor Laut (H. 0. Forbes) ; N.W. coast of Australia,Nicol Bay (Mr. du Boiday) ; Madjica-Sima group (H.M.^. iSamarang,'types of P. ursidus) ; Philippine Islands, Siquijor (Cumiug)'Cumberland Island, Sir C. Hardy's Island (J. B. Jukes); NewZealand (Dr. A. Sinclair, R.N.) ; Piji Islands, Vanua Levu, Bau(H.M.S. Hercdd ' ') ; Samoa Islands, IJpolu, &c. (Rev. S. J. Whitmee)New Hebrides (J. Macgillivray) ; besides others without definite orwell-authenticated localities.I have in my report on the late Dr. Bleeker's collection ofMalaysian Crustacea given the principal references to the syuonymaof this species.54. Pilumnus pulcher. (Plate XXII. fig. A.)In this species the carapace is regularly convex and somewhatorbiculate, the antero-lateral margins being as long as the posterolateraland regularly arcuate ; the upper surface of the body andlegs is rather thinly clothed with very long fulvous hairs, beneathwhich the carapace is granulated ; the median frontal lobes areveiy prominent, deflexed, and divided by a very narrow (or closed)median fissure ; the orbital margins are denticulated ; between eachof the four principal spines of the antero-lateral margins are threeor four scarcely smaller spinules. The pterygostomian regions aresmooth ; the sternum coarsely punctated. All the segments of thepostabdomen distinct in both sexes. The basal antennal joints arerobust and reach to the subfrontal processes ; the merus-joints ofthe outer maxillipedes small and smooth. The chelipedes are moderatelyrobust, and in the specimens examined nearly of equal size ;arm short, trigonous, smooth, with a strong spine near the distalend of its upper margin ; wrist granulated externally, with only asmall spinule near the distal end of its inner margin ;palm withthree spines on its upper margin (see fig. a), its outer surfacestrongly tuberculated, the tubercles arranged in longitudinal series,