. Bulletin - United States National Museum. Science. Fi<i. 401.—Pentidotea resecata. o X Ib^. b. First an- tenna. .\ 15j. second and third articles are of equal length; the fourth is almost twice as lono- as the third; the fifth is slightly shorter than the fourth. The flagellum consists of twelve articles. The maxilliped has a palp of five articles. The first and seventh segments of the thorax are equal in length and shorter than any of the others. The third and fourth segments are the longest. The first segment is very little wider than the head; the antero- lateral angles ar
. Bulletin - United States National Museum. Science. Fi<i. 401.—Pentidotea resecata. o X Ib^. b. First an- tenna. .\ 15j. second and third articles are of equal length; the fourth is almost twice as lono- as the third; the fifth is slightly shorter than the fourth. The flagellum consists of twelve articles. The maxilliped has a palp of five articles. The first and seventh segments of the thorax are equal in length and shorter than any of the others. The third and fourth segments are the longest. The first segment is very little wider than the head; the antero- lateral angles are produced to surround the posterior portion of the head. The epimera of the second,, third, and fourth segments do not occupy the whole of the lateral margin of the segment; those of the second and third segments occupy the anterior two-thirds, that of the fourth seg- ment, the anterior three-fourths part; the epimera of the three following segments occupy the entire lateral margin. All the epimera are large and conspicuous from a dorsal view. The legs are similar in structure and fur- nished with hairs on the inferior margin of the merus, carpus, and propodus. The basis of all the legs is provided with a carinate process. The abdomen has two short segments and one long one with lat- eral sutures at the base. The posterior margin of the terminal seg- ment is deepl}^ excavate, the lateral angles being acutely produced. The sides of the abdomen converge slightly from the base to about the middle of the segment, and then converge again slightly at the extremity. PENTIDOTEA WOSNESENSKII (Brandt). Idotea ;ie)isk)i Brandt, Middendorff's Sihirisrhe Reise, II, 1851, Crnst., p. 146. Idotea Idrtipes Dan.\, U. S. Expl. Exp., Cni8t., XIV, 185;^, p. 704, pi. xlvi, fig. 6. Idotea oregoneni^is Dana, Proc. Acad. Nat. Sci. Phila., VII, 1854, p. 175. Idotea wosiusenskii Stimpson, Bost. Jour. Nat. Hist., VI, 1857, p. 504.—Spence Bate, Lord's Naturalist in British Columbia, II, 186f
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