]54 
MOLLUSCA. 
and Helix fulvida, Pfr., is only a small variety of it. The sexual apparatus 
and the dentition of both species described and figured pi. 4. figs, 7 & 15; 
pi. 7. fig. 14; the animal of the second pi. 1, fig. 2.—R. (jlobosa, sp. n., known 
only from the shell, pi. 2. fig. 3, IMindanao. — It. semujranosa, Sowerby, is 
identical 'w ii\\ panayensis, Pfr,, and Pfeiffer’s semiyranosa is another species, 
called R. moussoni by 0. Semper. 
c. Shell hairy. R. gummata, Sow., sexual apparatus as in the preceding, 
the six outermost lateral teeth of the radula tricuspidate (pi. 6. fig. 32) ; R. 
setigera, Pfr., sexual apparatus not known, lateral teeth imicuspidate (pi. 6. 
fig. 33): both from Luzon. — R. striatida, sp. n., known only from the shell, 
pi. 2. fig. 4, province Ylocos, Luzon. 
Sixteen other Philippine species, known only from the shell, are enume- 
rated, and for the most of them new and exact localities given. Semper, 1. c. 
pp. G8-77. 
Rhysota cJiambertinii, Tryou, 18G9, = Helix haughtoni, Bens. 18G3. Stoliezka, 
P. As. Soc. Beng. 1870, p. 87. 
Helix {Hemiplecta) fordii, sp. n.. Brazier, P. Z, S. 1870, p. 662, Tasmania. 
MacrocJdamySf Bens, This name is limited by 0, Semper, as proposed by 
Adams and by the Recorder, to the species of Nanina the shell of which is 
smooth and shining both on its upper and under surface. Two long tongue- 
shaped shell-lobes; the left cervical lobe divided into two. Anatomical 
particulars as in Rupkela, described and figured from M. splcndens, Hutton, 
(kilcutta, pi. 6. fig. 10, and honesta, Gould, Andaman Islands, pi. 5. fig. 20. 
To this genus are referred : — M. ? crebrodriutus, sp. n., pi. 2. fig. G, Basilan and 
Zamboanga; M.? henrici, O. Semper, MS., sp. n., pi. 2. fig, 6, Northern 
part of Luzon : both known only from the shell. Semper, 1. c. pp. 17-19. 
Nanina {Macrochlamys) geojfreyi, II. Adams. The living animal described 
by G. Nevill. J. A. S. B. 'xxxix. p. 406. 
Macrocldamysi mdteri^ sp. n., II. Adams, P. Z. S. 1870, p. 794, Sarawak. 
Oi'obia audamanensis, Tryon, 1 809, = Helix' exid, Theobald, 1 861, and perhaps 
also = //. stepJius, Bens. Stoliezka, 1. c. 1870, p. 87. 
Ei(2)lecta, gen. nov. Cervical lobes of the mantle developed, tlie left sub- 
divided into two; shell-lobes rudimentary. Shell external, striated or ribbed 
above. A cylindrical appendicular gland in the female sexual apparatus, 
with a rudimentary analogue of the sagitta. This genus is founded on Helix 
subopaca, ITr., and H. layardi, Pfr., the anatomical particulars of which are 
described and figured, pi. 3. figs. 3 4, pi. 6. figs. 19 & 20. The following- 
species, known only from the shells, are placed here with doubt : — Hdix 
bohulensis, Vi\'.,Jilocinda, Pfr., orthodoma, Pfr., biangidata, Pfr., annida, Pfr. ; 
E. rotundata and bicarinata, spp. nn. ; the last only figured, pi. 2. tig. 8. Sem- 
per, 1. c. pp. 14-10. 
Eurypus *, n. g., type Helix casca, Gould, Fiji Islands. Foot with the back 
broad, not carinated ; genital apparatus as in Helicariori] E. similis, sp. n. 
pi. 2. fig. 14, Fiji Islands. The animals observed from specimens in spirits ; 
the genital apparatus, jaw, and radula of both described and tigured, pi. 1. figs. 
12 18, pi. 3. fig. 10, pi. 6. figs 10 & 12. Semper, 1. c. pp. 36, 37. 
Nanina fragillima, sp. n., Fiji Lslands. Allied to casca. Mousson, .1. do 
Conch, xviii. p. 112, pi. 7. fig. 3. 
Martensia^ gen. nov., type Helix mossambicensis, Pfr. The shell-lobe of 
* Preoccupied in Coleoptera. 
