GEORISSA. 
291 
Species : 
1. Pyxis (Hydrocena) Bens. (Coll. 1.) II. 161 (Hydrocena). III. 251. 
— Blanf. 1 . c. 1864. p. 463. — Patel Cat. p. 126. — Hydrocena 
pyxis Haul. Sf Theob. Conch. Ind. VI. t. 117. f. 3. — Birmania. 
2. G. fraterna Theobald & Stoliczka. f 
„G. testa cylindraceo-conoidea, solidula, pallida, imperfo- 
rata, regione umbilicali paulo impressa; anfractibus S 1 /^, con- 
vexis, supra modice subtruncatis, sutura perprofunda junctis, 
spiraliter crasse liratis, liris in anfractu penultimo 5, supera 
a sutura remotiuscula; apice valde mammillato; ultimo anfractu 
spira breviore, basi convexiusculo, spiraliter striato; apertura 
fere semicirculari , labro simplici, antice modice recedente, 
margine subobtuso instructo, labio recto, incrassato; operculo 
testaceo, tenui, subdiaphano, paucispirato. — Alt. testae 1,4, 
diam. max. 0,95 mill.“ (Th. & St.) 
Georissa fraterna Theob. Stol. in Journ. As. Soc. Beng. XLI. 1872. P. 
2. p. 332. t. 11. f. 5. 6. 
Habitat in valle fluminis Ataran prope Moulmain. 
Obs. „Affinis G. Pyxidi distantia lirae supiemae a sutura, sed differt 
liris ipsis fortioribus, anfractuum numero minore, apice distincte mammillato 
et tota forma graciliore, magis cylindrical 
3. Frustrillum (Hydrocena) Bens. (Coll. 2.) III. 251. — Georissa 
frustillum Blanf. 1. c. 1864. p. 463. — Hydrocena frustillum Hanl. 
Theob. Conch. Ind. t. 117. f. 5. — Ava. 
4. Illex (Hydrocena) Bens, f II. 161 (Hydrocena). III. 252. — Blanf. 
1. c. 1864. p. 463. — Hydrocena illex Hanl. Sj' Theob. Conch. Ind. 
t. 117. f. 4. — Thyet Myo, Tenasserim. 
5. Rawesiana (Hydrocena) Bens, f III. 252. — Blanf. 1. c. 1864. 
p. 464. — Theob. Sf Stol. in Journ. As. Soc. XLI. 1872. p. 332. 
— Hydrocena Rawesiana Hanl. Theob. Conch. Ind. t. 117. f. 6. 
— Moulmein, vallis Ataran. 
e. G. liratula Stoliczka. f 
„G. testa globoso - conica , solida, imperforata, carneo- 
luteola; anfractibus 3 — 3 1- / 2 , convexis, sutura profunda simplici 
junctis, primo apicem subobtusum formante mammillato, laevi- 
gato, luteolo vel rubescente, caeteris supra (infra suturam) 
paululum depressiusculis, spiraliter liratis, liris acutis, simpli- 
cibus, fere aequidistantibus, in anfr. penultimo 6 — 7, in ultimo 
9 — 10, basi convexa, centraliter minute multistriata; apertura 
semilunari, altitudine fere spiram aequante, haud dilatata; labro 
19 * 
