46 
PTEROCYCLOS §. 3. 
79 8. Ft, liispidus Pearson. 
T. late umbilicata, discoidea, solida, lineis elevatis con- 
fertis, concentricis , striisque incrementi subtilissime decussata, 
sub epidermide hispidula , olivaceo-fusca , saturatius lineata, 
alba; spira plana; anfr. 5'/ 2 subdepressi, ultimus 7 — 8 mill, 
pone aperturam rostro triangulari, subaperto, recurvato, sutu- 
ram tangente munitus , antice descendens ; apertura coerules- 
centi-albida , obliqua, subcircularis; perist. duplex: internum 
expansiusculum, undique appressum, superne triangulatim ex- 
cisum, externum expansum, superne ad anfractum penultimum 
in cucullam planam dilatatum. — Operc. extus convexum, 
lamella angusta 3 — 4-spirata circumvolution , superne planum, 
intus concavum, castaneum, nitidum. — Diam. maj. 28, min. 
22 '/,, alt. 8 mill. Ap. diam. 8 mill. (Mus. Cuming, et v. d. 
Busch.) 
Spiraculurn hispidum Pears, in Journ. As. Soc. II. 1833 p. 391. t. 20. 
Cyclostoma spiraculurn Sow. Thes. N. 59. p 110. t. 31. f. 270 — 272 *) 
— — Petit in Journ. Conch. 1850. I. p. 43. 
Steganotoma Princepsi v. <1. Busch in Phil. Abbild. I. 5. p. 106. Cy- 
clost. t. 1. f. 6. 
Pterocyclos hispidus Bens . in Journ. As. Soc. Y. 1836. p. 355. 
— — Bens, in Ann. and Mag. 2d. ser. I. 1848. p. 346. 
— — Pfr. in Zeitschr. f. Malak. 1851. p. 6. Consp. 
N. 52. 
— — et Prinsepsi Gray Catal Cycloph. p. 12. N. 1 . 2. 
— Prinsepi Pfr. in Zeitschr. f. Malak. 1847. p. 111. 
— — Chemn. ed. II. Cyclost. p. 195. t. 24. f. 7-10. 
Habitat in regione Himalayana Indiae ; Khasya Hills (Benson). 
80 9. Pt. rupestris Benson. 
T. late umbilicata, depressa, suborbiculata, solidula, corneo- 
albida, striatula, medio fascia castanea ornata, superne flam- 
mulis castaneis (basi obsoletioribus) variegata ; spira subplana, 
medio prominula ; anfr. fere 6 convexi, ad suturam profundam 
rugulosi, ultimus teres, non descendens ; apertura obliqua, sub- 
*) T. suborbiculari, planorbula, crassiuscula , albicante, castaneo radia- 
tim irregulariter strigata, epidermide fuscescente induta; anfr. 5 rotundatis, 
nonnunquam laevibus, nonnunquam spiraliter striatis, striis subasperis ; aper- 
tura circulari, peritremate duplici, interno angusto, subreflexo, postice emar- 
ginato, externo crassiusculo, reflexo, postice in canalem desinente ; anfractu 
ultimo spiraculurn tubulosum, vcl fornicatum prope aperturam gerente; um- 
bilico maximo, expanso; operculo multispirali, intus concavo, extus convexo, 
lamina spirali conspicua munito. (Sow. 1. c. 
