120 
ALYCAEUS. 
Cyclostoma gibbum Sow. Thes. N. 135. p. 139, t. 30. f. 247. 248.*) 
— — Chemn. ed. II. N. 102. p. 104. t. 17. f. 4 — 6. 
Cyclophorus gxbbus Pfr . in Zeitschr. f. Mai. 1847. p. 108. 
Alycaeus gibbus Gray Catal. Cycloph. p. 28. N. 1. 
— — Pfr. Consp. N. 175, 
Habitat ad Touranne Cochinchinae (Eycloux). 
208 2. A. strangiilatus Hutton. 
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- 
expansiusculum , marginibus approximatis, callo junctis. — 
Operc. immersum, cereum, anfractibus subdistinctis. — Diam. 
maj. 4'/ 2 , min. 4, alt. 2 2 / s mill. Ap. l'/ 3 mill. diam. (Coll. 
Nr. 81.) 
Cyclostoma strangulatum Hutton mss. teste v. d. Busch. 
— — Pfr. in Zeitschr. f. Mai. 1846. p. 86. 
— — Chemn. ed. II. N. 103. p. 104. t. 17. f. 7. 8. 
t. 38. f. 35. 
Cyclophorus strangulatus Pfr. in Zeitschr. f. Mai. 1847. p. 108. 
Alycaeus siranqulatus Gray Catal. Cycloph. p. 28. N. 2. 
— - Pfr. Consp. N. 176. 
Habitat Landour Indiae. 
209 3. A. eonstrictus Henson* f 
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 antieeque late constrictus ; apertura circularis, ver- 
ticals, 3 /g 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 duplicato, umbilicum versus subsinuato, peritremate latiusculo, 
reflexo, acuto, umbilicum versus angustiori; umbilico mediocri. Operc. 
comeum. (Sow. 1. e.) 
