MOLLUSCA. 
465 
Colloma maculosa (Pease, 18G6, as jEuchelus)^ picta, sp. n.^ and ffratiul^sa, 
sp. n., Pease, Am. Journ. Conch, iv. pp. 91, 92, pi. 11. figs. 1, 2, 3 & 4; the 
two first from the Paumotu Islands, the last from Ponape. 
Imperator imperialis (Gm.). Lingual dentition by Hogg, Transact. Roy. 
Microscop. Soc. xvi. pi. 11. fig. 46. 
Cyclostrcma nevilli and C. {Daronia) subdisjnnctay spp. nn., II. Adams, 
Proc. Zool. Soc. 1868, p. 293, pi. 28. figs. 17 & 18, Ceylon. 
Adeorbis costatus (Danilo and Sandri as Delphinula^ Briisina as Cyclo- 
stroma), WeinkaufF, Conch, d. Mittelm. ii. p. 264. 
Trochus crassus (Da Costa) and fragarioides (Lam.). Lingual dentition by 
Hogg, Transact. Roy. Microscop. Soc. xvi. pi. 11. figs. 48 & 49. 
Trochus. The Mediterranean species are enumerated by WeinkaufF, 1. c. 
ii. pp. 353-384, as follows : — 
I. Monodonta, Lam. part: turhinatus (Jioxn)=tesscllatus (Born)=/m- 
garioides (Lam.); articulatus (ho.m.)= dr a 2 mrnaudii (Payr.). 
II. ZizYPHiNus : conulus (L.) [this is the only species having the colour 
of the fruit of Zkyphus, trochus colore zizyphino (Gualtieri), and therefore 
ought to hear the name of zizyijhinus'] ; zizyphinus (\j,) — contdoides (Lam.), 
witli varr. Iccris, carinata, and cingulata ; cingulatus (Brocchi) ; gualtierii 
\V\\W.\ — Icsvigattis (Phil.); laugieri (Id^yr.) — violaceus (Risso) ; uniden- 
tatus (Phil.) ; striatus (\j.)=-depictus (Desh.), with var. elongata—gravesi 
(Forbes) ; exiguus (Vn\t.)=ct'€mdatus (Brocchi), with pyramidata) mon- 
tacuti {y^ ooA) \ ruscurianus (WeinkaufF), only in Algeria and perhaps Tunis ; 
strigosus (Gmel.), Marocco; miliaris (Brocchi), rare; granulatus, Born = 
papdlosus (Da Costa) ; millcgranus (Phil.) ; pumilio (Phil.). 
III. Gibbula : IcucophcBus (Phil.) ; tumidus (JSloni.)—raketti (Payr.) ; 
adansoni (Payr.), with var. adriatictis (Phil.) and y. helicoides (Phil.) ; vil- 
Ucus (Phil.); nehulosus (Phil.), rather doubtful; zonatus ) duminyi 
(Requien), its place in this genus has been ascertained by examining the 
operculum; varius (L.)=;Wssyi (Payr.) = fr<‘65. gibhosula and purpurata 
(Brusina) ; richardi (yxcyx.)— Thor cus mar garitaceus (Risso); umbiMcaris (L.); 
fermoni (y&.YX.)=canaliculatus (Phil, non Lam.), perhaps=rt7-t/e«5 (Salis) ; 
saulcii (Orb.), Algeria; albidus {GvclqI.) — biasoletli (Phil.) ; magus (L.) ', fanu- 
lum (Gmel.) ; guttadauri (Phil.) ; divaricatus (L.), with var. rarilineatus 
(Mich.) ; pygmccus (Phil.). 
Troclms verruca (Qov\A)=s Leptonyx imhricinctus (Migh.) ; Trochus tantilhis 
{GovlXA) — Margarita angulata (A. Ad.)=7’r. diminutivus (Reeve), belongs 
probably to Littorinidce ; Tr. atropurpurcus (Gould) = Clancidits nodiliraius 
(A. Ad.); Tr. metallicus (lieQvd)=intextus (Kien.) = saw^f?a^’c/^ew5^s (Soul.). 
Pease, Am. .Tourn. Conch, iv. p. 131. 
Clanctdus cruciatus (h.) = Monodonta vieilloti (Payr.)=ilfon. araonis (Bas- 
terot, fossil), Weinkauff, 1. c. pp. 350, 351. — Cl.jussieid (Payr.), a variety with 
more conspicuous spiral girdles, not concealed by the epidermis, is Mon. 
glomus (Phil.); there are even specimens intemiediate between these two 
and cruciatus, ibid. p. 352. 
Margarita grcenlandica (Beck). Lingual dentition by Hogg, Transact. 
Roy. Microscop. Soc. xvi. pi. 12. fig. GO. 
Stomatclla imbricata (Lam.). Lingual dentition by Hoirg, 1. c. pi. 13. 
fig. 83. 
