Report on the zoological collections made in the Indo-Pacific Ocean ...

EXPLANATION OF THE PLATES. 667Fig. C.Leptojorrjia austral icnsis, var. perfava, type specimen (dry),reduced to ^ nat. size. C Portion of main axis of same,from about 4 inches above base, with origin of three pinnules,showing the relations of the grooves and verrucae,x2. c, larger, and c', smaller fusiform spicules, x 150.D. JunceUa fragilis. Portion of stem, x 2|. From dry specimenfrom Port Denison, 4 fms.E. Muricea tenera, nat, size. E'. Portion of second branchon the left, x 4. e. Cortical spicule, x 25. e' . Portionof same spicule, much magnified, to show character oftubercles. From specimen in spirit from Port Molle,14 fms.F. Plexaura prctilonga, var. tupica. Portion of one of thetwo main branches, an inch above the point of bifurcation,x4. From dry specimen from Port Curtis, 5-11 fms.Plate XXXVII.Fig. A. Spongodes studeri, two terminal lobes, x2; A', portionof lobule, X 4 : both from specimen in spirit from PortMolle, 14 fms. a. Id., var. lievior, long zooid-spicule,X 30, and portion of same, x 90, showiug axial cavityoccupied by soft material, a. Cortical spicule of same,X 20, and portion, x 90, showing canals radiating fromtubercles to centre, a". Lesser zooid-spicule of same,X 90.The spicules are from a specimen from Arafura Sea.B. Mopsella clavigera. Portion of small specimen, near middle,about halfway upwards from base, front view, X 2.dry specimen from Port Curtis, 14 fms.FromC. Melitodes albitincta, type (dry) specimen, seen from front, nat.size.C. Fifth bifurcation of main stem of same specimen,X 4. C" & C". Smaller and larger forms of verrucae ofsame, showing 8 lobes of verruca-wall and 8 tentacularlobes within, x 6.D. Psilacahar'ia graciUima. D and D'. Two dry fragments,probably from near base of specimen or specimens, x 2.