THE GENERA. AND SPECIES OF ROSSELLI DAE. 



45 



O. Schmidt (Spong.— Fauna Atl. Geb, p. 13, T. II, 1, 3).— W. S. Kent 

 (Mouthl. Micr. Journ. 1870, p. 247, pl. LXV, 1—7) :— Schulze (Ghali. Rep. 

 Hex., p. 130, pi. LIII 3— 5).— (Rev. Asc. u. Ross., p. 548). 



Loc. : Atlantic; off Little Ki Island ; Saganii Sea 



Lophocalyx, F. E. Sch. 



9. L philippinensis (Gray). 



Eossella philippinensis, J. E Gray (Ann. & Mag. Nat. Hist., 1872, Ser. IV, 

 Vol. X., p. 137). &c. — Psdalia globulosa, Gray (ibid., 1873, Vol. XL, p. l'A !). 

 &c. — LopliQcahjx phüijipinensis, Schulze (Ghali. Rep. Hex., p. 133, pi, LIII. 

 1—2, pl. LIX). (Rev. Asc. u. Ross., p. 546). 



Loc. : Philippine Islands ; Little Ki Island. 



M E LO NYMPH A, F. E. Sell. 



10. M. velata (W. Thorns.) 



Rossella vdala, W. Thomson (Depth of the Sea, p. 418, tig. 65). Schulze 

 (('hall. Rep. Hex., p. 143).— Melonympha velata, Schulze (Rev. Asc. u. Ross., p. 

 547). 



Loc. : Strait of Gibraltar. 



Autodermalia variable. Pentactinic hypodermalia generally present, some- 

 times wanting. Gastralia, hexaetins, sometimes pentactins Parenchymal 

 macroscleres, chiefly diactins, may however enclose medium-sized or small hexae- 

 tins. As intermedia, oxyhexasters absent or more generally present in one or 

 two kinds. 



Artificial Key to Genera. 



a'. Hypodermal penlactin wanting. 



b'. Sack-like or vase like forms without distinct stalk Aulosaccus. 



h". Body with gastral surface evertfd so ?s to form a large 



part of the outer surface ; with long, tubular stalk Aulocltone. 



a". Hypodermal petitactin present- 



b'. Intermedia, only oxyhexaster... Baihydorus. 



b". Intermedia include discohexaster besides oxyhexaster. 

 c'. Discohexaster in one kind. 



