ECHINODERMaTA.

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longitudinal grooves. The warts on its surface also containanchor-shaped corpuscles. Rathke would have been inclinedto refer this Holothuria to Minyas, Cuv., if the latter genuspossessed anchor-shaped corpuscles. According to Costa’sobservations (Annales d. Sc. Nat. t. xix, 1843, p. 394),Sy nap tee occur in the Bay of Naples , which differ fromSynapta duverruea. Peach (Report of British Association,1844, Notices, p. 65) has found on the coast of Cornwall atrue Holothuria furnished with twenty tentacula, a formwhich has hitherto been wanting in the British Fauna. Itscucumber-shaped body is furnished with spine-like processesand four rows of suckers. On the other hand, Holothuriasquamata, Muller, has been taken by M'Andrew (AnnalsNat. Hist, xiv, 1844, p. 413) in the Hebrides .

Forbes (ib. xiii, 1844, p. 517) observed nine differentEchinidas at various depths in the Egean Sea, viz.: Spatanguspurpureus; the fragments of a Sea-urchin belonging to thegenus Brissus, Kl.; Amphidetus mediterraneus, nov. sp.,“ dorso convexiusculo, depressione subpiano, impressionescutiformi, extremitate anali truncata impressa, cauda promi-nenti acuminata, ventre piano, area postorali lanceolata.” Inthe family of the Clypeastridae [Clvpeasterise] Forbesobserved [in abundance] in that sea, Echinocyamus pusillus ;in the family of the Cidaridse, Echinus lividus was most abun-dant, and Cidaris hystrix frequent, whilst Echinus esculentuswas rarely met with. Another Echinus, indistinguishablefrom the fossil Echinus monilis, was found very abundantlyat from twenty to one hundred fathoms. It is the Echinusmiliaris of Grube, but very distinct from the true E. miliaris.The same naturalist (ib. vol. ii, 1843, p. 280), describesGoniaster abbensis as a new British Starfish, with the followingdiagnosis : corpore planiusculo, orbiculari, angulis in brachiisproductis, infra et supra tuberculis, granulis stomatibusquevestito. He also (ib. xi, 1843, p. 463, and xii, p. 211; also.Transact. Linn. Society, vol. xix, P. 2, 1843, p. 143), insti-tutes a new genus of the Ophiuridse, Pectinura, with the fol-lowing characters: corpus orbiculare, squamosum, gra-