52 Moll. 
MOLLUSCA. 
Orodoris miamirana, sp. n., Bergh, in 'Semper’s Keis. Philippin. ii. 
pt. 21, pp. 429 & 430, Zamboanga, Philippines. 
JIexal>ranchus (Ehreub.) thus characterized : — “ Corpus molle, magnum, 
nonnihil depressum, dorso laevi, limbo palliali lato, margine tenui undulato, 
branchia e fasciculis fruticulosis discretiscompluribus(68), foveis totidem 
discretis contractilibus formata ; tentacula magna, foliacea, margine 
crispato ; rhinophoria collo roflexo j podariuin sat latum. Armatura 
labialis fortissima, utrinque lamella crassa e hamulis minutissimis formata. 
Lingua rhachide nuda, pleuris multidentatis, dentibus hamatis. Penis 
inermis, longissimus.” The known species enumerated. Id. JB. mal. 
Ges. iv. pp. 72 & 73. 
UembrancJius orbicularis, Mauritius, aneiteumensis (Bergh, MS.), New 
Hebrides, and inauritianus, Mauritius and Rodriguez Islands, spp. nn., 
Abraham, P. Z. S. 1877, pp. 260-262, the first pi. xxx. figs. 23 & 24. 
Crepidodoris, g. n. Gills 22, most of them arranged in the figure of a 
horse-shoe, a few at the end placed more inwards. C. plumbea, sp. n.. 
Red Sea. Pagenstecher, in Kossmann’s Zool. Ergobnisse, vol. i. pt. 2, 
p. 61, figs. 35-38. 
Acanthodoris mollicella, Lord Auckland Islands, and globosa, New 
Zealand, spp. nn., Abraham, P. Z. S. 1877, pp. 262 & 263, pi. xxx. 
figs. 1-4, 6-9. 
Thordisa, g. n. “Forma corporis et radula fere ut in Discodoridibus, 
dorso fere villoso. Armatura labialis nulla. Dentes radulae extimi den- 
ticulati. Penis inermis.” T. maculigera, sp. n., Philippines, externally 
and anatomically described. Doris villosa (Aid. & Hanc., 1864) belongs 
also to this genus. Bergh, in Semper’s Reis. Philippin. ii. pt. 22, 
pp. 540-642, pi. Ixi. figs. 19-24, and pi. Ixii. figs. 1 & 2. 
Trippa, g. n. “ Forma corporis depressa. Corpus sat molle, supra 
tuberculatum, tuberculis grosse villosis. Tentacula parva. Podarium 
sat latum, margine anteriore ope lobi capiti connato. Armatura labialis 
nulla. Lingua rhachide nuda, pleuris multidentatis ; dentes hamati. 
Penis inermis.” T. ornata, sp. n., Philippines, externally and anatomi- 
cally described. Id. 1. c. pp. 643-546, pi. Iviii. figs. 3-8. Doris ornata 
(Ehrenberg) also belongs to this genus ; id. JB. mal. Ges. iv. p. 63. 
POLYCEUID.®. 
Trevelyana (Kclaart). The 9 known species enumerated, and T. 
citrina (? = Doris limacina, Q. & G.), Pelew Islands, alba, Philippines, 
and pUbeia^ Aibukit, Pacific, spp. nn., anatomically described. Bergh, in 
Semper’s Reis. Philippin. ii. pt. 21, pp. 440-449, pi. Ivi. figs. 18-25, 
pi. Ivii. figs. 1-12, pi. liv. figs. 26-35. 
Casella atro-marginata (Cuv., as Doris), Philippines, Moluccas, New 
Guinea, Australia ; id. 1. c. pp. 462 & 463. 
Nembrotha, g. n. “ Corpus limaciforme, dorsum a lateribus non dis- 
cretum. Tentacula breviora, lobiformia ; rhinophoria retractilia. Bran- 
chia paucifoliata, non retractilia, fere in medio dorsi sita. Podarium 
angustius. Armatura labialis parva vel nulla ? Dentes radulae median! 
depress!, subquadra ti vel arcuati, laterales pro majore parte depress!. 
