152 



profunde excavato, calloso; apertura subverticali, angulato-ovali ; 

 columella subverticali, retrorsum in dentem acutum desinente ; 

 perist. incrassato, albo, undique late expanso, refexiusculo. — 

 Operc. profunde immersum, rvfo-corneum, paucispirale. 

 Diam. maj. \7\, min. 13, alt. 11 mill. 

 Hub. in -valle Yaraqui, reipublicse iEquatoris. 

 This shell is very like a Helicina, but the spiral operculum ex- 

 cludes it from that genus, and a subgeneric section of Cyclostoma 

 must be formed for it. 



3. Clatjsilia Bourcieri, Pfr. C. testa vix rimata, fusiformi, 

 solida, sublcEvigata, opaca, corneo-fusca ; spira subturrita, apice 

 obtusa ; anfract. 9, planis, ultimo basi rotundato ; apertura pyri- 



formi-ovali, intus carnea ; lamellls approximatis, supera valida, 

 marginali, infera arcuatim ascendente ; lunella nulla (yel imper- 

 fectal); plica palatali 1, elongata, subcolumellari inconspicua ; 

 perist. libera, soluto, continuo, cameo, expanso, superne sinuoso. 



Long. 17i, diam. 4^ mill. 



Hab. Tunguragua, reipublicse jEquatoris. 



4. Helix selenostoma, Pfr. H. testa umbilicata, depressa, 

 tenuissima, undique breviter pilosa, diaphana, fuscula, fasciis 

 pluribus rufis, maculutim interruptis cincta; spira plana, medio 

 subimmersa ; anfract. 4\, convexis, ultimo rotundato, antice vix 

 descendente, circa umbilicum angustum, pervium subcompresso ; 

 apertura subverticali, rotundato-lunari, intus nitida ; perist. tenui, 

 sinuoso, marginibus convergentibus, supero late expanso, basali 

 reflexo, columellari oblique ascendente, superne dilatato. 



Diam. maj. 26, min. 21, alt. 11 mill. 



Hab. prope Gualea, reipulicse .^quatoris. 



Another new species from Mr. Cuming's collection, nearly allied 

 to this, from the Audes of New Granada, may be described by the 

 following phrasis : 



Helix catenifera, Pfr. H. testa umbilicata, depressa, tenui, 

 confertim granulata, diaphana, pallide fuscescente, fasciis variis 

 catenatim interruptis, rufis ornata; spira subplana ; anfract. 5, 

 convexiusculis, ultimo ventricoso, antice vix descendente, basi con- 

 vexo ; umbilico infundibuliformi ; apertura subverticali, lunato- 

 rotundata; perist. tenui, marginibus convergentibus, supero et 

 basali vix expansis, columellari parum dilatato. 



Diam. maj. 2b\, min. 21, alt. 12 mill. 



5. Helix Guayaquilensis, Pfr. H. testa umbilicata, depressa, 

 discoidea, tenuiuscula, striatula, pallide lutescente, diaphana ; spira 

 plana ; anfract. 5, planiusculis, lente accrescentibus , ultimo ro- 

 tundato, antice non descendente, basi fasciis nonnullis opacis, 

 albidis signato ; umbilico lato; apertura obliqua, lunato-rotundata ; 

 perist. simplice, acuta, recto, marginibus canniventibus, supero 

 subrepando. 



Diam. maj. 10, min. 9, alt. 3| mill. 

 Hab. ad Babahoya, Guayaquil. 



