MOLLUSCA. 56D 
Jouni. Concli. iii. p. 32C) has his suspicions strengtliened that mahy of the 
so-called Californian species are really untenable. 
[^Helix] Aglaja sequoicola, sp. n., Cooper, Proc. Calif. Acad. Nat. Sc. 1866, 
p. 259, or in Am. Joiirn. Conch, iii. p. 160, and figured pi. 7. fig. 27. Fi- 
gures of Agl. ayresiana, hridgesii, rowelli, and facta (Newcomb) on the same 
plate. 
Helix stearnsiana and lohriiy spp. nn., Gabb, Am. Journ. Conch, iii. pp. 235, 
236, pi. 16. figs. 1 & 2, Lower California. — Of H. remondi (Tryon) the living 
animal has been found, and is described by Gabb, 1. c. p. 236. 
Helix veatchii found alive six years after it was collected. Stearns, Proc. 
Calif. Acad. Nat. Sc. iii. [Similar cases have been also observed by others in 
Helix descrtorumj Ampidlaria, &c.] 
Helix hridgcsi (Tryon) [see * Zool. Record,’ iii. p. 196] is changed into JL 
parheri by the author, the former name being preoccupied. Am. Journ. 
Conch, iii. p. 105. 
G. Species from Eastem North America : — 
Vallonia minufa (Say). Its identity with the European pulchclla (Miill.) 
is contradicted by Tryon, Am. Journ. Conch, iii. p. 30, pi. 7. fig. 2 (minuta)^ 
fig. 1 (jmlchella). The American mimda figured also by Morse, Am. Natu- 
ralist, i. p. 544. 
Two species of the so-called genus Ulostoma, 19 of Mesodon, 5 of Xolotrcma^ 
8 of Triodopsis, 2 of Isognomostoma^ 10 of Stenotrana, 25 of Dcedalochila, 7 
of Polygyra, being all the North- American .species hnown at present, are de- 
scribed and figured by Tryon, Am. Journ. Conch, iii. pp. 37-G8, 155-100, 
pis. 2-5 and 7. — H, alholahris, iridentata, srfyi, dentifem, qwlliata^ monodmij 
and hirsuta, figured by Morse, Am. Naturalist, i. pp. 98, 99, and 150, 151. 
Of the first, the living animal, tlie radula, jaw, and .some other anatomical 
details are figured. 
Helix collarisj sp. n., Pfeifier, Mai. BUitt. xiv. p. 197, locality not hnown 
aspect quite peculiar. 
Cochlostyla mirahilis and metaformis (Fer.). Its variations in form and 
colour are treated of by Martens, Preuss. Exped. Zool. ii. pp. 89-92 ,* the living 
animal of the former species, 1. c. pi. 19. fig. 2, teeth and jaw pp. 173 and 174. 
— C. zamhoangec (Ilombr. & Jacq.), Zamboanga on Mindanao, redescribed, 1. c. 
p. 89 ; C. Icytensis (Pfr.), full-grown specimens have a reflected peristome, 
1. c. p. 94 ; C. zonifera (Sow.) and diihiosa (Pfr.), their vaiieties passing into 
spcciosa (Pfr.), 1. c. p. 94; C. rufogastra (Less.), with varieties, 1. c. p. 92; 
Bidimns, group Ampliidromus. An historical and geographical account of 
the species is given by Martens, 1. c. Some individuals appear to have a re- 
flected peristome whilst they retain the aspect and size of a young shell. 
The species may be brought to two subdivisions : — 
a. Larger, rather bulky, generally presenting about equal numbers of 
dextral and sinistral specimens. They are spread over the Transgangetic 
peninsula, the larger islands of the Indian archipelago, and the Philip- 
pines, but are absent in Flores, Timor, nnd the IMoluccas. JB. inversus 
(Midi.), including,/fff/flrnMs (Lea), (Reeve), and clongatus (Ilombr. 
& Jacq.), Siam, Malayan peninsula, and Sumatra; (Pfr.), pi. 22. 
fig. 2, Java; mclanomma (Pfr.), including Reeve's fig. 187 c, very vari- 
able, Singapore and adjacent islands; sultanas (Jmr\.) = 7naka$sariensis 
