. Bulletin - New York State Museum. t Bartow. Anothersmaller species, as yet unde-scribed, and apparently belonging to this genus, has been found tum (After Harder) swimming around in the small pools left by the tide, at City Island and on Staten Island. 3 VALVIFERA Uropoda ventral, arching over and protecting the pleopoda, which are delicate and mostly branchial in character. Of the three families one is represented. Family idoteidaeAntennulae of four segments, the basal segment enlarged andthe terminal one clavate. Pleon with more or fewer of its seg-ments consolidated into a scutiform tail-
. Bulletin - New York State Museum. t Bartow. Anothersmaller species, as yet unde-scribed, and apparently belonging to this genus, has been found tum (After Harder) swimming around in the small pools left by the tide, at City Island and on Staten Island. 3 VALVIFERA Uropoda ventral, arching over and protecting the pleopoda, which are delicate and mostly branchial in character. Of the three families one is represented. Family idoteidaeAntennulae of four segments, the basal segment enlarged andthe terminal one clavate. Pleon with more or fewer of its seg-ments consolidated into a scutiform tail-piece. Idotea marina (Linn.) O 11 i s c u s m a r i 11 n s Finnaeiis. FaunaSuecica. 1761. Stenosoma irrorata DeKay. /. , pi. 10, Idotea irrorata Verrill. /. c. , , Flarger. /. c. 1880. ,, Idotea marina Richardson. /. c. Body with sides nearly short, of four ^^ot ea marina (After Antennae lougcr, with multiarticulatc. 176 NEW YORK STATE MUSEUM flag-clliini longer than peduncle. Pleon apparently consisting offour segments, the first three short, the last long and : males 30-36 mm, breadth 8-9 mm; female smaller, rarelyexceeding 20 mm. Color very variable, frequently a uniform light or dark green orbrownish with minute black punctations. Very often there is adorsal stripe. Rarely the colors are arranged in transverse bandsand blotches. Females usually darker than males, often with a lightlateral stripe. Found on the seaweed on rocky shores or in eelgrass where itscolor is protective. Sometimes found far from land on floatingseaweed. Common all along the shore. Idotea phosphorea Harger Idotea phosphorea Harger. U. S. Com. of Fish and 1874. (27s). /. c. 1880. , , Richardson. /. Body with sides parallel. Antennulae short, of four longer, with multiarticulate flagellum, which is
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