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Show 518 DR. J. E. GRAY O N SPONGES. [May 9, these variations the forms of the spicules afford good specific characters, each species having a single form or a series of variations peculiar to itself. Fam. 1. HALICHONDRIAD,E. Sponge massive. Skeleton composed of cylindrical, fusiform, or pin-shaped spicules, often varying in form in the same sponge, variously fasciculated together, or rarely single, and united by a small quantity of horny matter. Sarcode fleshy or granular. * Spicules fusiform or needle-like. 1. RENIERA. Sponge massive, rugose. Skeleton reticulated, strengthened with spicules. Spicules of one shape, fusiform or needle-like (varying in size). Reniera, O. Schmidt, Sp. Adriat. p. 72. Hymeniacidon, Bowerb, Brit. Sp. RENIERA THOMASII. Hymeniacidon thomasii, Bowerb. B. Sp. p. 155. See also- II. coccinea, Bowerb. ib. p. 156. H. brettii, Bowerb. ib. p. 158. H. fragilis, Bowerb. ib. p. 159. H. reticulatus, Bowerb. ib. p. 159. H. fallaciosus, Bowerb. ib. p. 160. H. albescens, Bowerb. ib. p. 161. H. lactea, Bowerb. ib. p. 163. H. membrana, Bowerb. ib. p. 165. H. caruncula, Bowerb. ib. p. 166, t. 7. f. 372. //. sanguinea, Bowerb. ib. p. 168. Spongia sanguinea, Grant. II. mammeata, Bowerb. ib. p. 170. H. consimilis, Bowerb. ib. p. 172. H. fallax, Bowerb. ib. p. 177. H. viridans, Bowerb. ib. p. 178. H. per levis, Bowerb. ib. p. 179. Spongia perlevis, Mont, (spicules subpin-shaped). //. aurea, Bowerb. ib. p. 181. Spongia aurea, Mont. H. armatura, Bowerb. ib. p. 183. II. p achy derma, Bowerb. ib. p. 184. //. crustula, Bowerb. ib. p. 185 (spicules subpin-shaped). H. virgultosa, Bowerb. ib. p. ] 93. Reniera aqueeductus,0.Schmidt, Sp. Adriat. p. 73, t. 7. f. 6. B.M. R. cratera, O. Schmidt, ib. f. 7. '. ' "R M R. alba, O. Schmidt, ib. f. 8. R. nigrescens, O. Schmidt, ib. p. 74. jj jy| R palmata, O. Schmidt, ib. p. 74. ? Spongia palmata, Solander & Ellis. RM> |
