'CYCLOTUS &. 2. 33 
30. €.? diatretus Gould. 56 
T. planorboidea, albido- cornea, supra costis distantibus, 
ad intervallos cincinne clathratis, angulata, late umbilieata; 
spira planulata, anfr. 4 cylindraceis, rapide crescentibus, prope 
suturam decliventibus; apertura circularis; perist. simplex. — 
Tuat!//75 alt 17 poll. (G:) 
Cyclostoma diatretum Gould in Proc. Bost. Soc. 1847. p. 205 et Ex- 
ped. shells p. 38. Ed. 1851. p. 105. f. 124. 
Cyclolus? diatretus Pfr. Consp. N. 29. 
Habitat Sandalwood-Bay, Feejee Islands. 
* * 
* 
*- 
31. €. econoideus Pfr. 
[3 
T. umbilieata, globoso-turbinata, tenuis, pallide fusco et 
rufo marmorata et fasciata, lineis elevatis spiralibus et inter- 
dum carina 1l vel 2 distinctioribus cincta; spira conica, acu- 
tiuscula; sutura profunda, subcrenata, velrufo-articulata; anfr. 
4'/, convexi, ultimus circa umbilicum mediocrem, subinfundi- 
buliformem distinctius sulcatus; apertura subcircularis, intus 
concolor, nitida; perist. acutum, tenue, expansiusculum, mar- 
ginibus subeontiguis, callo brevi angulatim junctis. — Operc. 
testaceum, immersum, extus concaviusculum, anfr. 5, linea 
subelevata discretis. — Diam. maj. 10'/,, min. 9, alt. 8 mill. 
Ap. 5 mill. longa. (Coll. Nr. 17.) 
Cyclostoma spurcum Som. in Proc. Zool. Soc. 1843. p. 60. *) Nec Gratel 
E — Som. 'Thes. N. 26. p. 99. t. 24. f. 75. 76. 
— conoideum Pfr. in Zeitschr. f. Malak. 1846. p. 44. 
— -— Chemn. ed. Yl. Cycl. N. 99. p. 101. t. 13. 
f. 19— 91. 
-— varium DBarcl. mss.? 
Tropidophora conoidea Pfr. in Zeitschr. f. Malak. 1847. p. 107. 
Cyclotus conoideus Gray Catal. Cycloph. p. 10. N. 25. 
— — Pfr. Consp. N. 30. 
Habitat in insulis Seychellis (Sowerby); in America meridio- 
nali (Fitzroy, Gray), Isle de France (D. Barclay: C. varium 
in Mus. Cuming.). 
* * 
* 
*) T. suborbiculari, rufescenti-fusca, spira prominula; anfr. 4 rotun- 
datis, albicante-subvariegatis, spiraliter striatis et subcarinatis, sutura distincta, 
suberenulata; apertura circulari, peritremate albo, tenui, subreflexo; umbilico 
parvo; operculo crassiusculo, anfractibus quinis. (Sow. l. c.) 
à 
-€P 
