190 ALYCAEUS. 
208 
Cyclostoma gibbum Som. 'Thes. N. 135. p. 139, t. 30. f. 247. 248.*) 
— — . Chemn. ed. II. N. 102. p. 104. t. 17. f. 4—6. 
Cyclophorus gibbus Pfr. in Zeitschr. f. Mal. 1847. p. 108. 
Alycaeus gibbus Gray Catal. Cycloph p. 28. N 1. 
— — . Pfr. Consp. N. 175. 
Habitat ad 'Touranne Cochinchinae (Eydoux). 
2, A. stramgulatus Eitttozn. 
T. late umbilicata, depressa, subdiscoidea, tenuis, subti- 
lissime costulato-striata, corneo-hyalina; spira vix elevata, ob- 
tusiuscula; anfr. 4 convexi, ultimus latere inflatus, prope aper- 
turam strangulatus et canalem brevem, reversum, fornicatim 
tectum, suturae incumbentem emittens, antice angustatus ; aper- 
tura obliqua, circularis; perist. simplex, album, subincrassato- 
expansiuseulum, marginibus approximatis, callo junctis. — 
Operc. immersum, cereum, anfractibus subdistinctis. — Diam. 
maj. 4'/,, min. 4, alt. 2?*/, mill. Ap. 1'/, mill. diam. (Coll. 
INT. 1515) 
Cyclostoma strangulatum Hutton mss teste v. d. Busch. 
— Pfr. in Zeitschr. f. Mal. 1846. p. 86. 
-— — Chemn. ed. 1I. N. 108. p. 104. t. 17. f. 7 
i: 35 E S5. 
Cyclophorus strangulatus Pfr. in Zeitschr. f. Mal. 1847. p. 108. 
Alycaeus strangulatus Gray Catal. Cycloph. p. 28. N. 2 
-— — Pfr. Consp. N. 176. 
Habitat Landour Indiae. 
209 3. A. constrictus Henson. 1 
T. perforata, ovato-conica, glabra, costis angustis, obli- 
quis distantibus munita, translucens , albida vel rufula; spira 
elongato-conica, apice obtuso, sutura valde impressa; anfr. 4 
rotundati , superiores glabri, sequentes remote costulati, ulti- 
mus mox confertissime costulato-striatus, pone aperturam 
strangulatus anticeque late constrictus ; apertura circularis, ver- 
ticalis, 5/, longitudinis aequans; perist. undique reflexum. — 
*) T. suborbiculari, subpyramidali tenui, subdistorta, cinerascente, spira 
mediocri, obtusa, apice rufescente, anfr. 5 rotundatis, transversim striatis, 
ultimi dorso inflato, demum coarctato et quasi strangulato; apertura circu- 
lari; margine duplieato, umbilicum versus subsinuato, peritremate latiusculo, 
reflexo, acuto, umbilicum versus angustiori; umbilico mediocri. Operc. 
corneum. (Sow. l. e.) 
