ODONTOGNATHA, AULACOGNATHA. 
149 
23 . 1 . 23 teeth in one row, centrals tricuspid, laterals bicuspid, marginals 
about 12, quadrate ; at the hinder end of the foot a greatly produced and 
horn -shaped process, overhanging a transverse mucous slit. II. glandulosa, 
sp. n., iid. ibid., Astoria, Oregon. 
Xanthonyx (Orosse & F., 1867) ; distinctive characters pointed out and 
anatomy given by Fischer & Orosse, Moll. terr. et fluv. Mex. pp. 192-199, 
pi. 9. figs. 14-17. Shell vitriniform ; jaw ribbed, as in Avion ; a long flagel- 
lum, and a two-branched bursa copulatrix ; foot narrow, elongate, without 
caudal pore ; lateral and marginal teeth of the radula bicuspid. X. salleanus 
(Pfr.), p. 199, pi. 10. fig. 2 ; cordovanus (Pfr.), p. 200, pi. 10. fig. 3 ; surni- 
chrasti (Brot), p. 201, and chiapensis (Pfr., as Simptdopsis)^ p. 203 j all from 
Mexico. 
[^Patula ?] Zonites uzielUij sp. n., Issel, Atti Soc. Ital. xv. 1 (p. 6), Pisa. 
Patida texiilis (Shuttl.), conoinna and putrescens (Lowe), mgonata and 
retexta (Shuttl.) : Mousson, Malacol. Can. pi. 1. figs. 42-44, 46-47, 48-60, 
pi. 2. figs. 1-4 & 6-8 ( = Pfeiffer, Novitat. Conch, iv. pp. 69-61, pis. 119 & 
120), Canaries. 
Patula iPyramidulo) placida (Shuttl.) ; Mousson, ibid. p. 26, pi. 2. figs. 9- 
12 (=Pfeiffer, 1. c. p. 62, pi. 120), Teneriffe and Hierro. 
Patida {Acanthimda) spimfera, sp. n., id. ibid. p. 25 (=Pfr. 1. c. p. 63, 
pi. 120. figs. 17-20), Palma, Canaries ; P. (A.) servilis (Shuttl.), id. ibid. 
pi. 2. figs. 13-16 (=Pfr. I c. p. 63, pi. 120), Teneriffe. 
Patida (Jamdns) pompylia (Shuttl.), ibid. p. 27, pi. 2. figs. 29-32 (=Pfr. 
1. c. p. 65, pi. 120), Palma. 
Lyra, subg. n. for the species of Patula with spiral lines, P. (X.) cir~ 
cmnsessa (Shuttl.) and torrcfacta (Lowe) ; id. ibid. pp. 26, 27, pi. 2. 
figs. 21-24 k 26-28 (=Pfr. 1. c. p. 64, pi. 120), Canaries. 
Patula strigosa (Oon\(\), coopo,ri(P\\m.), idahoenm (Nowc.), and 
(Say) ; jaw described by Bland & Binney, P. Ac. Philad. 1872, pp. 136 
&136. 
For the Mexican species of Patula, see Helix. 
Patula cronhheiti (Newcomb) from Alaska: Martens, Mai. Blatt. xix. 
p. 79. 
Helix ( CArtro/?a) new name for atkinsoni (Cox, 1871, ncc Theo- 
bald, 1859) : Brazier, P. Z. S. 1872, p. 806. 
II. (C.) milligani (Brazier, 1^71) ^ scrupidus (Cox, 1871): id. ibid. 
p. 807. 
Guesteria, g. n. Shell imperforate, corneous, thin, depressed, quite invo- 
lute, the last whorl only visible ; aperture like that of Nautilus, peristome 
thin, simple. Animal unknown. Type Helix powisiana (Pfr.), mountains 
of New Granada. Crosse, J. de Conch, xx. pp. 197-201, pi. 13. fig. 1. 
Pitys (B^Q\()=iEndodonta (Albers) [see Zool. Rec. viii. p. 162J, jacquinoti 
(Pfr.), bursatella (Gould), retunsa (Pearse), fratercula (Pease), and P. tumu- 
hides, sp. n., carry their young in the cavity of the umbilicus, and may be 
termed marsupial snails. Garrett, Am. J. Conch, vii. p. 226. 
Pitys tumuloides, cavernula, canalis, rudis, dccorticata, harveyensis, otarca*, 
youngi, tenuieostata, proxima, and multilamellata, spp. nn., id. ibid. pp. 225- 
230, pi. 19. fig. 15-25, Cook’s Isles, Rarotonga. 
