84 CYCLOPHORUS $. 6 
conoidea, acutiuscula; sutura profunda; anfr. 5 parum con- 
vexi, ultimus recedens, basi striatulus, subplanus, circa umbi- 
lieum latiusculum Pn. apertura obliqua, circularis ; 
perist. simplex, continuum, breviter adnatum, rectum, obtusum. 
— Operc.? — Diam. maj. 12, min. 10?/, alt. 8 mill. (Mus. 
Cuming.) 
Cyclostoma. strigatum Gould in Proc. Bost. Soc. 1847. p. 204*) et 
Exped. shells p. 38. Ed. 1851. p. 102. f. 117. 
— — Chemn. ed. II. N. 303. t. 40. f, 15. 16. 
Cuclophorus strigatus. Pfr. Consp. N. 115. 
Habitat Upolu Insularum Pacificarum. 
145 53. €. tiarn Gould. 
q solida, turbinata, rudis, distorta, sordide alba, late um- 
bilicata ; spira anfr. 5 laxis, rotundatis, spiraliter liratis, super- 
nis undulatis, inter liros lineis incrementalibus conferte clathra- 
tis; apertura circularis, peritremate simplici. — Lat. 3/,, alt. 
1/2 (poll. s (.) 
Cyclostoma tiara. Gould in. Proc. Bost. Soc. 1847. p. 204 et Exped. 
shells p. 37. Ed. 1851. p. 101. f. 116. 
Cyclophorus tiara. Pfr. Consp. N. 116. 
Habitat Upolu Insularum Pacificarum. 
Obs. Species 2 praecedentibus peraffinis, 
146 51. €.? obligatus Gould. — 
T. parva, crassa, subglobosa, cinerea, arcte perforata, 
utrinque sulcis et costulis acutis subcrenulatis aequalibus cincta, 
et lineis incrementi subtilissimis striata; spira acuta, anfr. 5 
rotundatis; apertura parva, ovata, peristomate simplice, crasso. 
I5 Eat: 54.5. a1t:9/5 "poll? (6r) 
Cyclostoma obligatum Gould in Proc, Bost. Soc. 1847. p. 205 et Ex- 
ped. shells p. 38. Ed. 1851. p. 104. f. 119. 
Cyclophorus? obligatus Pfr. Consp. N. 117. 
Habitat in insula Matea. 
*) T. solida, orbiculato-coniea, pallide beryllina, supra costulis eingu- 
lata, infra subplanulata, umbilico amplo et carina acuta impendente limitato 
perforata: spira anfr. 5 convexis, sutura bene discretis, ultimo prope aper- 
turam despecto, fere disjuncto; apertura circularis; peristomate simplici, 
everso, acuto. — Long. ?/,, alt. 3/, poll. (Gould 1, c.) 
