A history of British star-fishes, and other animals of the class Echinodermata . few scattered in the furrows between the tentacula were long and pedicled, trifid towards theirextremities, and pinnate, their colour being deep purple. Mr. Goodsir dissected the species, and found the dentalapparatus to be very large, strong, and of a deep teeth consisted of twenty triangular pieces, attachedback to back in pairs, with processes running forward tothe mouth. The retractile muscles of this machinery wereovate, and attached to the anterior part of the body. Tothe circular
A history of British star-fishes, and other animals of the class Echinodermata . few scattered in the furrows between the tentacula were long and pedicled, trifid towards theirextremities, and pinnate, their colour being deep purple. Mr. Goodsir dissected the species, and found the dentalapparatus to be very large, strong, and of a deep teeth consisted of twenty triangular pieces, attachedback to back in pairs, with processes running forward tothe mouth. The retractile muscles of this machinery wereovate, and attached to the anterior part of the body. Tothe circular canal surrounding the oesophagus there wereattached, by narrow necks, three elongated, ventricose,pointed, transparent vesicles, perfectly free in all direc-tions. The intestinal canal exactly resembled that figuredin Hunters drawing. The respiratory apparatus wasvery highly developed, more so than in the drawingalluded to, extending, when stretched out, four tree had no vesicles or cceca attached to its trunk. hyndmans sea-cucumber. 225 HOLOTHURIADJE. HYNDMANS Hyndmawihi. Thompson. Specific Character.—White, five-angled ; skin smooth ; a double close row oflarge (non-retractile ?) suckers on each angle; tentacula ten, sessile, white*plumose. HolotAuria Hyndmanni, Thompson, An. Nat. Hist. vol. V. p. 100. (April 1840.) This very pretty species, two inches in length, wasdredged in Belfast Bay, by Mr. Hyndman of Belfast,whose natural history researches well entitle him to thecompliment paid by Mr. Thompson in associating thisHolothurm with his name. Besides the characters men-tioned in the specific diagnosis, Mr. Groodsir found it topresent, when dissected, the following anatomical ap-pearances. The dental apparatus consists of ten plates, which arecomposed of twenty white chalky triangular pieces ar-ranged in pairs. The retractile muscles of this apparatusare short, ovate, and attached posteriorly a little behindthe mouth. The cana
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