GASTROPODA (NUDIBRAKCHIA). 
Moll 61 
Vadlina, g. n. Back granulated, gill formed by a few tripinnate leaves ; 
tentacles flattened, triangular ; lips armed by minute booklets ; radula 
with a median toothed plate, many-toothed lateral plates ; male organ 
armed by booklets. Doris repanda (Aid. & Hanc.), glabra (Friele & 
Hans.), planulata (Stimps.), and pacijica, sp. n,, N. Pacific ; Bergh, 1. c, 
pt. 13, p. xxxiv. ; Nudibr. N. Pacific, pi. vii. figs. 19 & 20, pi. viii. figs. 7-18; 
Arch. f. Nat. xlv. pp. 344 & 345; and P. Ac. Philad. 1879, pp. 114-125, 
pi. V. fig. 15, pi. vi. figs. 21 & 22, pi. vii. figs. 9-20, & pi. viii. figs. 3-18. 
Doris repanda (Aid. & Hanc.) ^planulata (Stimps.), also radula per- 
fectly identical ; Verrill, Am. J. Sci. (3) xvii* p. 312. 
Jovunna^ g. n. Back minutely granulated ; gill-leaves tripihnate ; 
tentacles finger-shaped ; radula without median plate ; lateral’plates many- 
toothed ; male organ armed with a sting. Only one species, Doris john- 
stoni (Aid. & Hanc.) ; Bergh, Nudibr. N. Pacific, pi. ix. figs. 1-11, and 
Arch. f. Nat. xlv. pp. 346 & 347 ; already indicated in Semper’s Reis. 
Philippin. ii. pt. 10, 1875-76, p. 414, footnote. 
Aldisa, g. n. Back almost shaggy, soft; gills compound of six tri- 
pinnate leaves ; tentacles wart-shaped. Radula without median plate, 
lateral plates many-toothed, teeth erect, staff-like, denticulate externally* 
Only one species, Doris zetlandica (Aid. & Hanc.) Bergh, Arch. f. Nat. 
xlv. pp. 348-353, pi. xix. figs. 1-9; preliminary note in Semper’s Reis. 
Philippin. ii. part 14, p. xxxviii. 
Jiostanga^ g. n. Back minutely granulate, gills compound of 16 bi- 
pinnate leaves ; tentacles finger-shaped ; radula without median plate, 
lateral plates many-toothed, teeth bifid at the tips. For Doris coccinea 
(Forbes). Bergh, Arch. f. Nat. xlv. p. 353. 
Acanthodoris (Oray, Aid. & Hanc.). Generic characters described ; A. 
pilosa (Miill., Cuv.), with varr. albescens and purpurea^ from the Pacific, 
A . subquadrata (Aid. & Hanc.), and ccerulescens, sp. n., N. Pacific : id. 1. c. 
pp. 368-360, pi. xix. figs. 10-14, & Nudibr. N. Pacific, pi. xiii. figs. 6 & 7. 
Acanthodoris inornata and citrina, spp. nn., Verrill, Am. J. Sci. (3) 
xvii. p. 309, East Coast of N. America. A, stellata (Gmelin, as Doris) 
= pilosa (Aid. & Hanc.) = bifida (Verrill), Maine ; id. 1. c. p. 313. 
Adalaria, g. n. Like Lamellidoris, hut radula with small flat (spurious) 
median plates and a large hook-shaped lateral tooth. For Doris proxima 
and loveni (Aid. & Hanc.), and A. pacifica, virescens, and albo-papillosa, 
spp. nn., N. Pacific. Bergh, Arch. f. Nat. xlv. pp. 360-362, & Nudibr. N. 
Pacific, pi. ix. figs. 12-16, pi. x. figs. 1-11. 
Lamellidoris (Aid. & Hanc.). Generic characters detailed ; 17 species 
enumerated, including bilamellata (L.) and muricata (Miill.) : id. 1. c. 
pp. 362-365. L. varians and Jiystricina^ spp. nn., id. Nudibr. N. Pacific, 
pi. xi. figs. 3-14, North Pacific. 
Akiodoris [Ado-], g. n. General form like Lamellidoris, but suctorial 
proventricle simple, and 12-13 lateral teeth on the radula; male organ 
armed with simple or forked hooks. A. lutescens, sp. n., N. Pacific. Id. 
Arch. f. Nat. xlv. pp. 354 & 355 ; Nudibr. N. Pacific, pi. iv. fig. 13, pi. v. 
figs. 11-14, pi. vi. figs. 1-20, pi. vii. figs. 1-8, pi. viii. figs. 1 & 2; and 
P. Ac. Philad. 1879 (no text), pis. vi. figs. 1-20, vii. figs. 1-8, & viii. figs. 1 
& 2, anatomical figures. 
