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

324 COLLECTIONS FEOM MFXANESIA.described as tuberculated ; the seventh joint is very short ; theeighth slightly curved and nearly as long as the sixth, the terminalclaw about half as long as the eighth joint ; the two auxiliary clawsplaced, as usual, above the base of the principal claw. The bodyand limbs are clothed with a very short, close pubescence, and thejoints of the limbs with scattered longer hairs ; the last three jointsof the ovigerous legs have some rather stronger simple setae, andthe eighth joints of the legs have each a series of three or fourspine-like bristles on the under surface near the base.The single specimen, which is in very imperfect condition, isfrom Port Jackson. As no traces of the ovary could be seen, Ithink it is a male.This specimen resembles the British form designated A. hispidaby Hodge * (which is probably a mere variety of A. I(evis) ratherthan the typical A. lavis, as represented in that author's figures, inthe form of the rostrum and abdomen, but the leg-bearing processesof the segments of the body are more closely approximatedand the animal more densely pubescent than in either form. I donot observe the "circlet of little spines" at the extremity of thefirst joint of the mandibles mentioned by Hodge in his diagnosis ofA. hispida. Bohm f refers s])ecimens from Kerguelen Island tothis species ; but his figure of the palpus differs markedly from thesame limb as figured by Hodge in A. la vis.There are in the British-Museum collection two specimens ofuncertain British locality, probably referable to A. la'vis; but theyare in a verj- bad state of preservation, being gummed iipon cardboard,and can scarcely be identified with certainty.It is to be regretted that during the transference of the specimenfrom spirit to the slide on which it is mounted for the microscope,the eiglith joint of the only perfect leg was lost; but the figure,which was outlined while the specimen was yet in spirit, representswith sufficitnt accuracy the form of this joint.This species is referable to the genus Achelia as limited by Dr.Hoek in his recent Classification of the PycnogonidaJ.Dr. Anton Dohrn § has united this genus (with several others)with AmmotJiea, and the distinctions separating these t^cuera arecertainly very slight. I think it better, however, having only twospecies under consideration, to refer them to the genera as characterizedby Hoek, his being a complete synopsis of the knowngenera and sj^ecies of the group.2. Phoxichilidiuin hoekii. (Plate XXXV. fig. B.)Body robust, with narrow intervals between the leg-bearingprocesses at base. Proboscis cylindrical, increasing slightly in thicknessto its distal extremity, inserted ventrally between the bases of* Ann. & Mag. Nat. Hist. ser. 3, xiii. p. 11.5, pi. xiii. fig. 11 (18fi4ly Monatsb. der Al (1881 ).I'§ ' Die Pantopoden de.s Golfes von Neapel,' p. ]PA (1881).