CYCLOPHORUS §. 8 . 
55 
64. jTffexicanus iflenke. (Coll. 71. — Cyrtotoma 
mexicanum Morck Yold. p. 40. n. 807. — Cyclo- 
tus Mexicanus Pfr Mon. Pneum. n. 32. — Gray 
Phan. p. 19. — Cyrtotoma Ad. Gen. p. 276. — 
Operc. tenue, corneum , subseptemspiratum ! - — /3. 
Testa majore, fulva; diam. maj. 27 1 / 2 , min. 2 1 y 2 , 
alt. 12 mill. Cordova, Vera Cruz legit Salle.) . . Mon. p. 34. 
65. C. Parma ISenson. f- 
„Testa latissime umbilicata, planato-depressa , discoidea, 
tenuiuscula, confertim et arcuatim sericato-striata, saturate cas- 
tanea, flammulis nonnullis pallidis versus spiram ornata , sub- 
tus interdum pallidiori; spira planata, apice nullo modo pro- 
minente, sutura profunda ; anfractibus 5 convexis , ultimo an- 
ti ce descendente; apertura valde obliqua, ampla, ovato-rotun- 
data, superne angulata, intus livide caerulea; peristomate 
duplici , interiori continuo , albido , ad dextram expansiusoulo, 
exteriori breviter interrupto, expansiusculo , fusco-corneo ; 
margine columellari subtus recedente, dextro prorsum arcuato ; 
umbilico latissimo, minime profundo. Operculo tenui, corneo, 
^Va-spirato, suturis intus extusque pulchre carinatis. — Diam. 
major 26, minor 23, alt. 6 mill." (B.) 
Cyclophorus Parma Bens, in Ann. and Mag. 2d. ser. XVIII. p. 94. 
Habitat in regione montana insulae Ceylon (E. L. Layard). 
Obs. „Forma et umbilico similis Plerocyclo hispido Pears. Anfractus 
operculi laete cornei minus arete convoluti quam in C. Cratera.e 
66. CJ. Cratera Benion, *b 
„Testa late umbilicata, planulato-depressa , subdiscoidea, 
tenuiuscula, radiatim et confertim ruguloso-striata, vix nitidula, 
fulvo-cornea, raro castaneo-strigata ; spira planulata, apice vix 
prominente , sutura profundiuscula ; anfractibus 5 convexius- 
culis, ultimo longe lenteque descendente; apertura obliqua 
mediocri, subrotundata, superne angulata, intus albida; peristo- 
mate ^ duplici, interiori continuo, acuto, breviter porrecto, 
exteriori expansiusculo , breviter adnato , albido ; umbilico 
aperto profundiusculo. Operculo tenui, corneo, 7-spirato; 
anfractibus valde angustis, suturis intus et extus pulchre cari- 
natis. — Diam. major 22-24, minor 18—20, alt. 6—8 
mill. 44 (B.) 
Cyclophorus Cratera Bens, in Ann. and Mag. 2d. ser. XVIII. p. 94 . 
p. Minor; diam. maj. 13, min. 11, alt. 4 mill. 
