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Show 52 ZOOLOGICAL COLLECTIONS M A D E DURING [Jan. 4, SMITTIA LANDSBOROVI, Johnston. Lepralia landsborovii, Johnston, Brit. Zooph. (2) i. p. 310, pi. liv. fig. 9. Smittia landsborovi, Hincks, Hist. Brit. Mar. Polyz. p. 341, pi. xlviii. figs. 6-9. A small colony, or part of one, discovered among an immense number of Tubuliporce. Sessile. Cells thin, hyaline, punctured all over, oval or narrow-pentagonal; bounding lines faint or absent. Six strong spines on margin. Avicularium small, on lip of mouth, sometimes absent. Hab. Elizabeth Island, 6 fathoms, on Fucus. Lepralia reticulata, Macgillivray, Ann. & M a g . Nat. Hist. (l)ix. p. 467. SMITTIA RETICULATA, Macgillivray?, vav. Smittia reticulata, Hincks, Hist. Brit. Mar. Polyz. p. 346, pi. xlviii. figs. 1-5. Part a of colony. Margin of mouth generally complete below, subjacent denticle seldom seen. Cells outlined by distinct raised line. Oval median avicularium included in an area bounded by a line descending from the sides of the month, longitudinal in direction, sometimes absent. Cell equally punctured all over. Spines on border of mouth 4 or 5, the median ones less robust than the lateral ones. Lower lip prominent. Ocecium absent. Hab. Elizabeth Island, 6 fathoms, on Fucus. Obs. In the punctuation of the entire surface and in the larger number of spines this appears to differ materially from S. reticulata, but it is at any rate closely allied to it. SMITTIA AFFINIS, Hincks, var. nov. ACUMINATA. Lepralia affinis, Hincks, Ann. & Mag. N. H . (3) ix. p. 206, pi. xii. fig. 2. Smittia affinis, Hincks, Hist. Brit. Mar. Polyzoa, p. 348, pi. xlix. figs. 10, 11. Zocecia ovate or distinctly pentagonal (the upper angles rounded), separated by slender raised lines ; surface covered with moderately large punctures radiating obscurely from centre ; peristome thin and depressed below, thick above, where 4 to 5 strong spines spring from it; below and within inferior edge of peristome 3 denticles, the median one generally hammer-shaped, the others simply acute. A circular avicularium may be present immediately below the lower lip, on a slightly raised boss. Ocecia globose, somewhat more broad than long, with a semicircular crown of large punctures on the upper surface; the peristome is prolonged into a pointed lip on each side of the front of the cell (similar ones sometimes occur in the same position in the zocecium), and is often indented by a sinus which occurs in its lip. One of the zoaria forms a circular patch ; the other is imperfect. The specimens agree in all other points with Hincks's description {I. c). |