184 



Resembles S. aberrata, which has a smaller aperture, ringent with 

 teeth and columellar folds. 



D^= Vol. vi. p. 374, (April, 1852.) 



Bulimus vesicalis [sufflatus]. T. tenuis, lactea, ovoidea, 

 striatula, vix perforata; spirit, brevi, anfract. 5^, ultimo elliptico | lon- 

 gitudinis testa? adequante : apertura dimidiam longitudinis adequans, 

 lunata; labro simplici; columella reflexa. Axis 1.3; diam. 0.7 poll. 

 Inhabits Lower California. Maj. Rich. 



Form and size of B. apodemetes D'Orb. [The name B. vesicalis is 

 preoccupied.] 



Bulimus vegetus. T. solidula, elongato-ovata, alba, striatula, 

 perforata ; spira elevata, anfr. 6, ultimo £ longitudinis testa; superante, 

 tumido, subgibboso : apertura subovata ; labio subcontinuo, reflexo, 

 faucibus stramineis. Axis 1.5; diam. 1 poll. Inhabits San Juan, 

 Gulf of California. Lieut. Green. 



It has the form of B. rhodolarynx. [Mr. Cuming thinks it may be 

 B. pallidior Sowb.] 



Bulimus excelsus. T. elongato-ovata, acuminata, solidiuscula, 

 laevis, fulvida, albido strigata ; spira elevata, peracuta, anfr. 7, ultimo 

 | longitudinis vix aequante : apertura trientem long, adequans, subo- 

 vata ; labro albo antice revoluto ; subcontinuo, ad columellas ex- 

 panso, fissuram latam obtegente. Axis \% ; diam. | poll. Inhabits 

 Lower California. Maj. Rich. 



Has much the appearance of B. Lobbii Rv., from Peru, with the 

 aperture more like B. pallidior Sowb. 



AcMjEA [Nacella] paleacea [is Patelloidea depicta Hinds]. 



Crepidula explanata. T. unguiformis, elongata, calcarea, 

 apice terminali ; antice angustata, truncata, denticulo mediano armata ; 

 marginibus ex lamellis disjunctis alveolatis; dorso concavo; intus por- 

 cellana, lateribus incurvatis ; septum dimidiam longitudinis metiens, 

 valde arcuatum, margine concavo. Long. 1£ ; lat. £ ; alt. £ poll. In- 

 habits Monterey, Lieut. Green; Lower California, Maj. Rich. 



A curious shell, which must have resided in tubes of some sort, 

 probably of those made by Pholas. The back is excavated as if done 

 by a gouge. [It may be C. perforans Valenc] 



Bulla (Akera) culcitella. T. subcylindracea, solidula, albida, 

 spiraliter concinne striata, epidermide straminea induta ; anfr. 5, ultimo 

 elongato subfusiformi, antice rotundato, supernis spiram conicam 

 efformantibus ; sutura profunde canaliculata : apertura linearis, an- 

 trorsum dilatata ; columella valde contorta, uniplicata ; labro postice 

 sensim recedente. Axis 1 ; diam. | inch. Santa Barbara. Col. Jewett. 



B. tenuis Adams is the only species approaching this. Some of its 

 characters bring it in close alliance with the genus Tornalina. 



