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Show 1879.] THE COREAN AND JAPANESE SEAS. 59 the carapace is more or less covered on its dorsal surface with small tuberculiform granules, which are largest along the line of the median dorsal carina, and are gradually obliterated toward the lateral margins. As in all other respects these specimens resemble the typical forms, I have not ventured to regard them as belonging to a distinct species l. APPENDIX. On the Method of Dredging and Separating the Specimens, fyc., with Remarks on Temperature, fyc. By Capt. H. C. ST. J O H N , R.N. During the years 1870 to 1877, when employed surveying the Japanese coasts, I usually kept a small dredge pretty well at work. There is so little trouble and the few arrangements necessary are so simple, that I venture to give a brief outline of the plan I adopted, hoping, if it meets the eyes of those who have business on the deep, that they might be induced, at any rate occasionally, to try their luck in a similar way. After ascertaining the depth, the dredge (which was always kept ready, hanging over the stern) would be lowered into the water, a 28-pound lead attached to the rope 5 to 8 fathoms from the dredge ; this is to ensure the dredge passing over or along the bottom at the right angle. If the ship is just moving through the water, so much the better; the dredge then goes out clear. I think about one mile an hour not too fast for the dredge to pass along the bottom, and half an hour generally long enough for it to remain down. On its being brought up, a boy, whom I had shown how to sift the contents, immediately commenced operations, using three diffe- 1 To complete the account of the Podophthalmia collected by Capt. St. John, I subjoin the following description of a Stomatopod crustacean without definite locality, wbich, being represented only by a single specimen in mutilated condition, I cannot determine with certainty. It is apparently allied to Cyrtopia, Dana. The carapace, which loosely covers the body, is attached only near its anterior margin, and is deeply excavated posteriorly on the dorsal surface, leaving three or four segments of the cephalothorax exposed. Anteriorly, it is prolonged forwards between and half conceals the eyes, and is armed with a strong median and two small lateral frontal spines; beneath the eyes there are two small spines on the lateral margins, and one on the postero-lateral lobe on either side of the median excavation. The surface of the carapace is covered with small scattered granules. The postabdominal segments are nearly smooth ; the sixth has two teeth on its lateral margins. The terminal segment is entire, tapers slightly to its distal extremity, which is subtruncate and armed with two strong stiff setas. The eyes are large, red, and only slightly project from beneath the margins of the carapace. The antennules have the peduncle thickened, and are furnished with two flagella, which are broken; but the outer in its imperfect state is nearly as long as the animal. The antennae are furnished at base with an ovate leaf-like scale, and have each a single flagellum (unfortunately broken). The cephalothoracic legs are in very imperfect condition ; but there seem to have existed six pairs, furnished (at least the anterior pair) with a palp and a branchial leaflet at base. The first five postabdominal segments are furnished with swimming-appendages; the appendages of the sixth segment have subequal rami, ciliated along their inner margins, the outer ovate-lanceolate, and the inner lanceolate and acute. Length about 9 lines (| inch). |