388 
ALYCAEUS §. 4. 5. 
22. humilis Blanf. — Conch. Ind. t. 93. f. 8. 9. 
23. politus Blanf. — Conch. Ind. t. 94. f. 1 — 3. 
24. Theobaldi Blanf. — Austen 1871. t. 4. f. 4. — Conch. Ind. t. 97. 
f. 2. 3. 
24 a A. pusillus Austen, t 
„ Testa depresse turbinata, modice umbilicata, tenuis, trans- 
lucens, vitracea, pallide cornea, glabra, vestigiis costulationis 
subtilissimis et distantibus rarius instructa, sed in parte tumida 
anfractus ultimi nec non in umbilico dense et regulariter cos- 
tata. Spira depresse conoidea, apice obtuso, sutura modice 
impressa; anfr. 3 l / 4? ultimus parum inflatus; constrictio levis- 
sima, laevigata; tubulus suturalis brevis et crassus. Apertura 
obliqua, rotunda; perist. duplex, limbis ambobus expansis, in- 
terno continuo. Operculum tenue, corneum, transparens, mul- 
tispirale, leviter concavum, tubere centrali postice nullo. —m 
Diam. maj. 0,09, min. 0,075, alt. 0,055; diam. apert. 0,035; 
tubulus suturalis 0,012 poll.“ (A. angl.) 
Alycaeus pusillus Godwin Austen in Journ. As. Soc. Beng. XL. 1871. p. 
89. t. 3. f. 3. 
— — Hanl. 8f Theob. Conch. Ind. t. 103. f. 7. 10. 
Habitat frequens in ripis fluvii Kopili Indiae. 
§■ 5. 
27. succineus Blanf. — Conch. Ind. t. 96. f. 7. 10. 
27 a. A. diagonius Austen, f 
„ Testa arete umbilicata, turbinata, tenuis, translucens, 
pallide succinea aut rubescens, in anfractibus 2 ultimis sub- 
tiliter sed distanter, in parte inflata ultimi dense costulata. 
Spira conoidea, apice obtuso, sutura bene impressa; anfr. 4, 
rotundati, ultimus immediate juxta basin tubuli suturalis con- 
strictus , turn versus aperturam late turgens , initio tumoris 
superne cristam diagonalem vel recurvatam formante. Con- 
strictio glabra; tubulus suturalis 0,053 poll. Apertura diago- 
nalis, circularis; peristoma sinuatum, duplex, limbus internus 
continuus, externus expansus, ad umbilicum leviter reflexus, 
eum partim occultans. Operculum antice concavum, postice 
convexum, tubere s. nucleo parvo centrali instructum. — Diam. 
maj. 0,145, min. 0,120, alt. 0,10; diam. apert. 0,75 poll." 
(A. angl.) 
Alycaeus diagonius Godwin Austen in Journ. As. Soc. Beng. XL. 1871. p. 
87. t. 3. f. 2. 
