ilELlX §. 156. 471 



3373. plagiogJossa Fa-. (Coll. 1448.) V. 420. — Polyyyru Crosse 



cj Fisch. MoU. terr. Mex. p. 270.*) t. 12. f. 9. — Triodopsis /V<<W 

 Cat. p. 93. — Polygijra plagioglossa Semp. Pliil. 111. p. 163. — 

 Oajaca rcipubl. mexicanae. 



3374. Yucatasnea Morclet. f 111. 263. IV. 314. V. 420. — 1'oly- 



gyra Crosse Sj' Fisch. Moli. terr. Mex. p. 277.**) t. 12. I'. 14. — 

 Trioclopsis Yucatanea Tryon in Amer. journ. concli. 111. p. 52. 

 t. 9. f. 17. — Yucatan. 



3375. vialtiaosa Gould. (Coil. 1449.) 111. 263. IV. 314. V. 420. — Trio- 



dopsis Bhin. Amer. landsli. p. 133. f. 225. — Triodopsis viil- 

 tuosa Tryon in Amer. journ. conch. III. p. 93. t. 9. f. 14. — 

 Arkansas, Texas. 



3376. isats-ofcrcns Sland. (Coll. 1450.) V. 420. — Triodopsis liinn. 



Anier. landsh. p. 132. f. 223. — Lewis in Amer. journ. conch. 

 VI. p. 189. — Triodopsis inlroferens Tryon in Anier. jourii. 

 conch. 111. p. 51. 1. 9. f. 5. — Carolina septentrionalis. 



3377. oppilata Morclet. (Coll. 1451?) III. 264. IV. 314(?). V. 420.— 



Polvgyra Binn. Amer. landsh. p. 101. f. 177. — Crosse Sf Fiscii. 

 Mofir^tcrr. ]\lc\. p. 2S5.***) t. 12. f. 11. — Yucatan , Florida? 



3378. implicaia (Daedalochila) Beck. V. 421. — Polygyra Crosic 



*) «Testa anguste ct pervie umbilicata, subconoideo-scmiglobosa, so- 

 lida, arcuafo-striatula, vix nitidula, fulvo-cornea; spira depresso-coiioidea, 

 apice obtuso, sutura impressa; anfractussy^ — 5^/2 planiusculi, embryonales 

 primi 1 y^ laevigati, cornei, ultimus antice descendcns, subtus valde con- 

 gtriclus, basi convexior; apertura diagonalis, rotundato-lunaris; parios aper- 

 turalis dente obliquo, linguiformi munilus; peristoma albidum, marginibus 

 distantibus sed paululum convergentibus, in adultis speciminibus callo 

 tenui junctis, columellari brevi, redexo, basali reflexo, dentibus 2 appio- 

 ximafis munito, allero parvulo, nodilormi, altero majore, sursum pro(lu(-!o, 

 marginem cxternum aflingenfe, supero expanso. — Diam. maj. 9, min. 7 '/2, 

 alf. 47, mill.» 



**) «Testa sat late et pervie umbilicata, orbiculato-depressa, subobli(|ue 

 costulalo-striata, lenuiuscula, pellucida, pallide corneo-fusca; spira depressa, 

 apice obfuso; sufura impressa; anfr. 5 vix convexiusculi, embryonales primi 

 1 Yo laevigati, ulfimus anfice descendens, planafus, paulo supra periplieriam 

 subangulalus, infra anguluni convexior, basi striatus, pone aperturam con- 

 sfricfus; apertura obliqua, diagonalis, denfibus 3 coarctata, primo parietali, 

 libero, sat valido, linguitormi , obliquo, subaculo, secundo basali, minulo, 

 tertio e margiiie externo oriundo, paulo majore; peristoma rellexum, infus 

 callosum, album, marginibus subdisfantibus, columellari recto, brevissimo, 

 umbilicum attingenfc, supero subhorizonlali, attenuato. — Diam. maj. 8^0, 

 min. 7, alf. 4 mill,» 



*'•) «Tesla uinbilicala , depressa, tenuiler striala, subpellucida, nitidiila, 

 pallide cornca; spira vix elcvala, apice planalo; sutura prolunde impressa ; 

 aiifr. 5 convexiusculi, lenle accresceiites, ultimus anfice subifo dellexus, 

 ponc aperfurain conslricfiis, basi inllafus; umbilicus angusfus, pervius, 

 1'xlus dilalatns; aperfura diagonalis, extus lunafo-circularis, intus ringons, 

 auriformis, albido-cornca; perisfoma breviter retlcxum, fere liberum, albi- 

 dum, inarginibus dente linguilormi , inaequaliter bicruri, intrantc junclis, 

 Ijasali unidenfafo, cxlerno versus medium altero denle munito, laliorc, 

 subbicruri, in lamellam (tesinenle, in loco inscrfionis profracto, libcro. — 

 Diain. maj. 7, miu. 6, a!t. 3 mill. — Var. (i. Minor, pallidior; diam. maj. fi, 

 inin. 5, ail. aVo mill.» 



