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Show 64 ZOOLOGICAL COLLECTIONS MADE DURING [Jan. 4, STOMATOI'ODA. 31. Squilla gracilipes, n. W . coast of Patagonia. *32. Pseudosqidlla lessonii, M.-Edw. Coquimbo. ANISOPODA. 33. Arcturus coppingeri, n. Trinidad Channel. 34. Serolis scyfkei, Liitkeu. Trinidad Channel. ISOPODA. 35. Idotea annulata, Dana. Port Henry. 36. Styloniscus magellanicus, Dana. Trinidad Channel, T o m Bay, Port Henry, Cockle Cove. 37. Lironeca novce-zecdandice, White (ined.), Miers. Portland Bay. 38. Mga punctulata, n. Wolsey Sound. *39. Corallana acutioauda, n. Hotspur Bank. 40. Sphceroma gigas. Sandy Point, Elizabeth Island, Silly Bay. 41. Dynamcnc darwinii, Cunningham. Elizabeth Island, Borja Bay. ClRRIPEDIA. 42. Balanus Icevis, Bruguiere. Sandy Point. Descriptions and Notes on Species. DECAPOD A. EURYPODIUS LATREILLEI. Eurypodius latreillei, Guerin, M e m . du Museum, xvi. p. 354, pi. xiv. (1828) ; Icon. Crust. R. A. ii. pi. xi. fig. 1 (1829-44) ; M.-Edw. H. N. C. i. p. 284 (1834) ; Cr. in Cuv. R. A. (ed. 3) pi. xxxiv bis, fig. 1 ; Nicolet, in Gay's Hist, de Chile, hi. p. 123 (1849) ; Dana, Cr. in U.S. Expl. Exp. xiii. p. 104, pi. iii. fig. 1 (1852) ; Cunningham, Trans. Linn. Soc. xxvii. p. 491 (1871).'• Eurypodius tuberculatus, Eyd. & Soulevet, Voy. Bonite, Zool. Cr. p. 221, pi. i. figs. 7-9 (1841). Eurypodius audouinii, M.-Ed. & Lucas in d'Orbigny, Voy. Amer. merid. vi. Cr: p. 3, pi. i. figs. 1-6 (1843) ; Dana, Cr. I. c. p. 104 (1852) ; Nicolet, in Gay's Hist. Chile, Zool. iii. p. 123 (1849); Cunningham, Trans. Linn. Soc. xxvii. p. 491 (1871). Eurypodius septentrionalis, Dana, Amer. J. Sci. & Arts (ser. 2) xi. p. 270 (1851); U.S. Expl. Exp. Cr. i. p. 101, pi. ii. fig. 6 (1852); Cunningham, Trans. Linn. Soc. Zool. xxvii. p. 491 (1871). Eurypodius brevipes, Dana, Amer. J. Sci. & Arts, xi. p. 270 (1851) ; Cr. Expl. Exp. xiii. 1, p. 193, pi. ii. fig. 7 (1852); Cunningham, Trans. Linn. Soc. Zool. xxvii. p. 491 (1871). I have been obliged to include all the specimens in the Museum collection under the single heading of E. latreillei, because I find myself unable to distinguish them by the characters usually employed in descriptions, i. e. the comparative length of the penultimate and antepenultimate joints of the ambulatory legs, the density of the pubescence, the denticulations of the inner margins of the fingers, and the tuberculatum of the carapace. All of these characters appear to be subject to considerable variation. There may possibly be two or |