GASTEOPODA (nUDIBRANCHIA). 177 
figs. 1-4, and in Semper’s Keis. Arch. Phil. ii. pp. 411 & 412, pi. xxxiii. 
fig. 2. 
Casella philippinensis^ & sp. nn., figured only; id. 1. c. pi. xxxiii. 
fig. 1 (very near Doris atro-marginata^ Guv.). 
Orodoris, g. n, ; near Miamira^ but without frontal or caudal velum 
or lateral lobes ; back also keeled and transversely ribbed. Type, 0. 
miamirana^ sp. n. Id. J. Mus. Godeffr. viii. pp. 67-71, pi. viii. fig. 3, 
pi. X. figs. 9-20. 
Notodoris, g. n. “ Corpus limaciforme, dorso a lateribus non distincto. 
Rhinophoria Integra, cavitate valvula protecta, retractilia. Armatura 
labialis nulla. Dentes linguales median! nulli, laterales erecti, hami- 
formes.” Type, N. citrina, sp. n. Id. 1. c. pp. 64-67, pi. ix. figs. 32-45. 
Plocamophorus tilesii (Bergh) ; anatomical figures, without descrip- 
tions, id. in Semper’s Reis. Arch. Phil. ii. pi. lii. figs. 17-27, pi. liii. 
figs. 1-4. 
Ceratosoma (A. Ad. & Rv.). Upper tentacles retractile ; back with 
three lobes, two short rounded lateral, and a tongue-shaped posterior ; 
lips clothed with very minute hooks; radula with numerous lateral 
hooks, no median one. C. cornigerwm (A. Ad.), Zebu, Philippines, 
gracillimum (Semper, MS.), sp. n., Bohol, Philippines, and trilohatum 
(Gray), Red Sea, externally and anatomically described. Id. 1. c. 
pp. 391-408, pi. xlviii. figs. 15-27, pi. xlix. figs. 1-10, and pi. xxv. fig. 8. 
TRITONIIDiE. 
Tritonia pleheia (Johnst.); a specimen with bifid hinder extremity. 
Macintosh, Mar. Invertebr. of St. Andrews, pi. ii. fig. 15. 
Tethys. Probably only one species, leporina (L.), is known, though it is 
somewhat variable ; its anatomy fully described. R. Bergh, in Semper’s 
Reis. Arch. Phil. ii. p. 345, pi. xlv. figs. 19-26, pi. xlvi. figs. 1-22, 
pi. xlvii. figs. 1-3. No distinct pharynx, no radula, but first ventricle 
armed with strong cuticular folds. 
Scyllcea (L.). The known species enumerated, S. pelagica (L.) and 
its varieties, marginata (Bergh, 1871) ? graycs (A. Ad., 1850) var., 
ghomfodensis (Forsk.), varr. nn. sinensis and orientalis^ and elegantula^ 
sp. n., Philippine Islands, fully described, with their anatomy; id. 1. c. 
pp. 315-343, pis. xl, & xlii.-xliv. 
Bornella (Gray). The known species enumerated, B. calcarata 
(Morch, 1863), St. Thomas, West Indies, and digitata (A. Ad. ?, Aid. & 
Hanc.), from Bohol, Philippines, fully described, with their anatomy ; 
id. 1. c. pp. 287-308, pis. xxxvi.-xxxviii. 
A list of the known species also by Crosse, J. de Conch, xxiii. 
pp. 323-325. 
Bornella caledonica, sp. n., Crosse, 1. c. p." 318, pi. xii. fig. 10, New 
Caledonia. 
Doto coronata (Gmel.) ; Macintosh, Mar. Invertebr. of St. Andrews, 
pi. ii. fig. 14. 
Melibe (Rang, 1829), = Chiorhoea (Gould, 1852). The known species 
enumerated, M. capucina^ Zebu, Philippines, and rangi, . Red Sea, 
1875. [vOL. XII.] 
N 
