Marine isopods collected in the Philippines by the fisheries steamer Albatross in 1907-08 . in length, with the exception ofthe fourth, which is one and a half timeslonger than any of the others. The an-terior part of the lateral margin in thesecond, third, and fourth segments isproduced in a lobe on either side; lateralto these lobes the epimera are placed andare in the form of narrow plates, grad-ually becoming wider; on the last threesegments the epimera are large and con-spicuous, projecting laterally and oc-cupying half the margin of the fifthsegment, two-thirds of the margin of thesi
Marine isopods collected in the Philippines by the fisheries steamer Albatross in 1907-08 . in length, with the exception ofthe fourth, which is one and a half timeslonger than any of the others. The an-terior part of the lateral margin in thesecond, third, and fourth segments isproduced in a lobe on either side; lateralto these lobes the epimera are placed andare in the form of narrow plates, grad-ually becoming wider; on the last threesegments the epimera are large and con-spicuous, projecting laterally and oc-cupying half the margin of the fifthsegment, two-thirds of the margin of thesixth segment, and nearly all of the margin of the seventh segment. The abdomen is composed of three segments, two short onesanterior to the terminal segment, which is produced posteriorly to anarrow rounded extremity. At the base on either side the terminalsegment is produced in a rounded lobe; the incision between the lobeand the rest of the segment marks a depression extending across thesegment, which is the indication of another coalesced are four pairs of marsupial TRITiENIA- FlG. 25. ARCTURUS tus. X 3. (Drawn by MissV. Dandridge.) no. 1701. NORTHWEST PACIFIC ISOPODS-, RICHARD SOX. 103 The first four pairs of legs extendforward and are furnished with longhairs; the last three pairs are ambula-tory. Two specimens, a male and a fe-male (the female is described andfigured) were collected at station the way from Bowers Bank to Petrel Bank, Bering Sea, at Semi-sopochnoi Island, r. t. S. 45° W., 1. 12° W., about 12 miles (lat. 52° 12N.; long. 179° 52 E.), at a depth of43 fathoms in fine black gravel. This species is very close to Arctu-rus glaber Benedict ° from BeringSea, but differs in the shorter andmore thickset body; in the shortersecond antennae; in the shorter ab-domen, with the apex less pointed;in the shorter fourth segment ofthe thorax; and in having the threelongitudinal bands of yellow on thebody. This species is also similar to
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwashi, bookyear1910
