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

482 COLLECTION a from MELANESIA.be mentioned appear to have occurred in the Australian collectionsof the ' Challenger,' the Eeport on which unfortunately only appearedwhile this <strong>Report</strong> was passing through the press.108. Leucetta primigenia, Ildclel, var. microrrhaphis, id.KalkscMciimme, ii. p. 118, pi, xxi.A small bean-shaped specimen, of the Lipostomella form.Hah. Alert Island, Torres Straits, 7 fms.Bistrihution (the species). Mediterranean, Atlantic, Cape of GoodHope, Eed Sea, Indian Ocean, South Australia, Fiji Islands, Chili{H'dckel) ; Kerguelen and Heard Islands {PoJejaeff).109. Leucaltis bathybia, Hddel, var. australiensis, nov.(Plate XLIII. fig. m.)Leucaltis bathybia, Hdckel, Kalksclncdmme, ii. p. 156, pi. xxviii.fig. 2.A small, low, massive specimen, with a small lateral unarmed ventand very reduced cloacal cavity. The quadriradiates are sagittal,those of the outer surface very large ; diameter of rays about•04 millim., the facial angle nearly 1S0°, the apical ray in the sameplane as the laterals; the deep quadriradiates have a somewhatsmaller facial angle and more slender rays, and the apical ray oitenprojects well forward ; rays almost straight. The triradiates forma thin layer on the inner wall, where their rays measure onlyabout "01 millim. in diameter ;they have a facial angle of about160° ; in the deep parts they are subregular, sparsely scatteredamongst the quadriradiates, and the rays measure about -02 (sometimes-025) millim. in diameter; rays approximately straight.Colour (in spirit) white.This form differs from vars. perimina and arahica of Hackel (Z. c.)in the massive shape of the sponge, and in the larger size, as comparedwith the quadriradiates, of the deep triradiates. In the comparativestraightness of the rays it agrees with var. arahica andvar. mascarenka, mihi (see this Eeport, "Western Indian Oceandistrict) ; but differs from the latter in the smaller diameter of therays of the large cpiadriradiates, in the apparent smoothness of thecloacal surface, and the massive form.Hah. Port Jackson.Bistrihution of species.Red Sea (HdcJcel).110. Leuconia saccharata, Hddel.Leucandra saccbarata, Ilachel, Kalkschuiimme, ii. p. 228, pi. xxxiii.fig. 3, pi. xxxviii. figs. 7-14.A fine specimen, GO millim. across, of the Amplioriscus type, andfragments. One cloacal fistula measures upwards of 30 millim. inlength.Hah. Port Jackson, 0-5 fms.Bistrihution. Bass Straits (Hdckel).