OCR Text |
Show 114 ZOOLOGICAL COLLECTIONS MADE DURING [Jan. 4, External Characters. Skeleton. rtQ&Wtwii (Erect, branched; sur- Stoutest fibre super- Size ;0887 b y 00211 Cladochalina armigera, | face covered with ficially cored by millim. Schmidt (Florida •{ spines; vents scat- spicules; its maxi-and Antilles). I tered, 3 millims. in mum diameter about ^ diameter. "884 millim. fSuberect, unbranched; Stoutest fibre some- Size "076 by -00126 surface smooth, only times cored, axially, millim. C. armigera, vox. per- ^ rendered uneven by by spicules; max-gammfacea (Allan- i the twQ gerieg of i m u m diameter "14 tic, off East Brazil). | ventgj 2 to 3 minims, millim. (^ in diameter. Order ECHINONEMATA, Carter. PHAKELLIA EGREGIA, sp. 11. (Plate X. fig. 6.) Form erect, stipitate, ramose ; bases of branches flattened, ends rounded. Surface hirsute, owing to freedom of echinating columns from the axial skeleton for from "7 to 1'25 millim. of their length. Colour (in spirit) yellowish white. Skeleton-axis typically Axinellid, diameter about the same.as the length of an echinating column; longitudinal lines from' ;i8 to "25 millim. apart, multispicular, compact. Echinating cohiihns very distinct, connected with each other for about one third of their length by horizontal bars of single spicules, and strongly echinated from their bases upwards. Parenchyma very pale yellow, slightly granular. Skeleton-spicules of four kinds, viz.:-(1) Setaceous acuate, smooth, slightly curved, tapering to sharp point, very frequently swollen near its base, size 1-207 by "01268 millim., springing from axis and lying between echinating columns. (2) Stouter, smooth, slightly curved acuate, tapering to less sharp point, size either '8875 by "019 millim. from within echinating columns, or "38 by "07416 when echinating the columns. (3) Smooth acuate, sharply bent at about one fourth of its length from the base, tapering to sharp point, size "2534 by '0095 millim., forming the bulk of the echinating and axial meshwork spicules. (4) Smooth acerate, sharply bent, tapering to sharp points, size "304 by '01267 millim., forming part of the horizontal or cross series of spicules, which lie between the echinating columns and between the axial columns, not abundant. No flesh-spicules. Examined. In spirit and by mounting in balsam. External Characters. It is about 65 millims. high, and has a short pedicel rising from a slight basal expansion. The branches lie approximately in one plane. It is firm in texture, owing to its well-developed axis. The sarcode invests all but from *5 to '8 millim. of the ends of the echinating columns. No oscula or pores were made out. Skeleton very regular. The echinating spicules project in great numbers from the columns at the usual acute angle. Spicules. The thick long acuates apparently form the backbone of the echinating columns, though they are not always to be made out: the shorter ones, of nearly the same breadth, occur in small numbers among the smaller echinating spicules. The small number of acerates present mav be due to the Youth of the specimen ; thev are to be made |