Marine isopods collected in the Philippines by the fisheries steamer Albatross in 1907-08 . Fig. 2.—Ancinus dbpkessds. Fig. 3.—Ancinus depressus. Man- Maxilliped. X 77J. dible. X llh teeth; below the cutting edge is a process provided at the tip withthree teeth; below this process is a long spine. The first two segments of the thorax appear to be a little shorterthan those following, which are subequal in length. All are of nearly. Fig. 4.—Ancinus depressus. First Fig. 5.—A n c i n u s Fig. 6.—A ncinus PAIR OF LEGS OF FEMALE. X 77*. DEPRESSUS. FIRST DEPRESSUS. THIRD AND SECOND PLEO- PLEOPO
Marine isopods collected in the Philippines by the fisheries steamer Albatross in 1907-08 . Fig. 2.—Ancinus dbpkessds. Fig. 3.—Ancinus depressus. Man- Maxilliped. X 77J. dible. X llh teeth; below the cutting edge is a process provided at the tip withthree teeth; below this process is a long spine. The first two segments of the thorax appear to be a little shorterthan those following, which are subequal in length. All are of nearly. Fig. 4.—Ancinus depressus. First Fig. 5.—A n c i n u s Fig. 6.—A ncinus PAIR OF LEGS OF FEMALE. X 77*. DEPRESSUS. FIRST DEPRESSUS. THIRD AND SECOND PLEO- PLEOPOD. X X 41. equal width, the sides of the body being almost parallel. With theexception of the first, the epimera of all the segments are distinctlyseparated; they are broad, quadrangular plates with the post-lateral no. 1663. THE ISOPOD—ANCINUS DEPRESSUS—RICHARDSON. 177 angles more or less produced, and they are all bent downwardsabout the middle almost at right angles with the segments. On theventral side they are also produced in the form of a plate, coveringthe proximal extremity of the legs. The abdomen is composed of two distinct segments. The first isshort, not as long as the last thoracic segment, and has no suture linesindicating other coalesced segments. The terminal segment is trian-gular in shape with the apex appearing somewhat truncate, owingto the sides of the segment being turned downward and in
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwashi, bookyear1910
