686 MR. ET. HIGGINS ON NEW SHELLS FROM ECUADOR. [Julie 4, 



Long. 93, lat. 36 mill. ; apert. 37 mill, longa, 17 lata. 

 Hab. San Lucas. 



Clausilia (Nenia) buckleyi, sp. nov. (Plate LYI. fig. 4.) 



C. testa non rimata, elnngatofusiformi, tenui, subdiaphuna, lineis 

 elcvatis confertis oblique sculpta, pallide fulva ; spira regulariter 

 altenuata, apice acutiusculo, sutura impressa ; anfr. 1 1 primis 

 convexis, cateribus planiusculis, ultimo paulum angustiore, antice 

 soluto, basi rotundato; apertura verticali, ampla, oblique pyr if ormi- 

 ovata, fauce purpurea; lamella supera valida, in/era mediocri, 

 lunella nulla ; plica palalali et subcolumellari inconspicuis, perist. 

 tenui, continuo, libero, undique late expanso. 



Long. 43, diam. 6 mill. ; apert. 9 mill, long., 6 lata. 



Hab. Macas. 



Labyrixthus manueli, sp. nov. (Plate LVI. figs. 5, 5«r.) 



L. testa mediocriter umbilicata, depresso-conoidea, solidiuscula, acute 

 carinata, striata et subtilissime granulata, saturate castanea ; spira 

 conoidea, obtusa, sutura leviter impressa ; anfr. bk, subplanis, 

 ultimo antice subito deflexo, pone aperturam profunde scrobiculato, 

 basi convexo ; apertura valde obliqua, auriformi, ringente ; perist. 

 continuo, albo, expanso, subrefexo, ad anfr. penultimum sinuoso, 

 medio laminam erectam latum emittente, margine basali medio sub- 

 sinuato, parte sinistra dentem obtusum, parte dextra dentem com- 

 pression acutum munita. 



Diam. maj. 28, min. 25. alt. 13 mill. 



Hab. Macas. 



Named after Manuel Villagomez, the servant of Mr. Buckley 

 during his two journeys in Ecuador. 



Helix (Aglaia) macasi, sp. nov. (Plate LVI. figs. 6, 6 a.) 



H. testa aperta, umbilicata, depressa, solidiuscula, oblique leviter 

 plicato-striata, (sub lente) concentrice minutissime striolata, et supra 

 liris nonnullis sculpta, albida.fasciis tribus castaneis omata; spira 

 paulum elevata, apice subplanato, sutura valde impressa ; anfr. 5, 

 convexiusculis, ultimo antice deflexo ; basi convexo, apertura valde 

 obliqua, ovato-lunari ; perist. reflexo, marginibus conniventibus, 

 callo tenui junclis. 



Diam. maj. 35 mill., min. 29, alt. 15. 



Hab. Macas. 



Aperostoma montezumi, Hidalgo. (Plate LVI. figs. 7, 7a.) 

 This peculiar species of Aperostoma differs so completely from 

 every other known, that I have considered myself justified in making 

 it the type of a subgenus, which may be characterized as follows : — 



Genus Aperostoma. 

 Subgenus Buckleyia. 

 Testa discoidea, tenuiter utrinque excavata, omnes anfracius exhibens, 



