2l6 RICHARDSON 



VALVIFERA or IDOTEOIDEA. 



Family IDOTEIDJE. 

 CHIRIDOTEA ENTOMON (Linngeus). 



Oniscus entomon LINNAEUS, Syst. Nat., I2th ed., n, p. 1060, 1766. PALLAS, 

 Spicil. Zool., ix, p. 64, pi. v, figs. 1-6, 1772. 



(f)Entonton pyramidale KLEIN, Rem. sur les Crustaces, figs. 1-3. 



Squilla entomon DE GEER, Mem. pour servir a 1'Hist. des Insectes, vn, p. 514, 

 pi. xxxn, figs, i-io, 1778. 



Asellus entomon OLIVIER, Encycl. Meth., p. 253, 1789. 



(?) Cymothoa entomon FABRICIUS, Ent. Syst., II, p. 505, 1793. 



Idotea entomon Bosc, Hist. Nat. des Crust., n, p. 178, 1802. LATREILLE, 

 Hist. Nat. Crust, et Ins., vi, p. 361, 1803-4; vn, pi. LVIII, figs. 2, 3. 

 (?) LAMARCK, Hist, des Anim. sans Vert, ist ed., v, p. 159, 1818. 

 ( ? ) DESMAREST, Consid. Crust., p. 289, 1825. RATHKE, Neuste Schriften 

 der naturf. Gesellsch. in Danzig, I, p. 109, pi. iv, 1820. KROYER, Vid. 

 Selsk. Skrift., vn, p. 323, 1838. MILNE EDWARDS, Hist. Nat. Crust., in, 

 p. 128, 1840. KROYER, Nat. Tidsskr., n, p. 402, 1847. WHITE, List 

 Cr. Brit. Mus., p. 93, 1847. BRANDT, Cr. in Middendorff's Sibirische 

 Reise, II, Pt. I, p. 145, 1851. MEINERT, Nat. Tidsskr., 3d ser., xi, p. 84, 

 1877. BRANDT, Comptes Rendus, p. 713, 1880; Ann. Mag. Nat. Hist., 

 VI, p. 98, 1880. 



(?) Saduria entomon ADAMS, in White, Sunderland's Voyage Baffin's Bay, 

 etc., Appendix, p. ccvii, 1852. 



Idotceya longicauda LOCKINGTON, Proc. Calif. Acad. Sci., vn, Pt. I, p. 45, 

 1877. 



Glyptonotus entomon MlERS, Trans. Linn. Soc. London, XVI, pp. 12, 13, 

 pi. i, figs, i, 2, 1883. (See MIERS for above synonymy.) RICHARDSON, 

 Proc. U. S. Nat. Mus., xxi, p. 843, 1899. 



Localities. St. Michael, Alaska (Dr. Ritter) ; Yakutat Bay, Alaska 

 (Harriman Alaska Expedition). 



IDOTEA RESECATA Stimpson. 



Idotea resecata STIMPSON, Bost. Jour. Nat. Hist., vi, pp. 504, 505, pi. xxn, 

 fig- 7 1857; Proc. Bost. Soc. Nat. Hist, vi, p. 88, 1859. MIERS, 

 Jour. Linn. Soc. London, xvi, pp. 45, 46, 1883. RICHARDSON, Proc. 

 U. S. Nat. Mus., xxi, p. 844, 1899. 



Locality. Tomales Bay, California (Dr. Ritter and party). 



IDOTEA GRACILLIMA (Dana). 



Stenosoma gracillimum DANA, Proc. Acad. Nat. Sci. Phila., vn, p. 175. 



STIMPSON, Bost Jour. Nat. Hist., vi, p. 505, 1857. 

 Idotea gracillima MlERS, Jour. Linn. Soc. London, XVI, p. 35, 1883. 



RICHARDSON, Proc. U. S. Nat. Mus., xxi, p. 844, 1899. 



Locality. California (Dana). 



The description of this species given by Professor Dana is very short 

 and rather vague. He describes the body as extremely slender and 



