CLASS GASTROPODA 
177 
periphery with narrower interspaces. It is rather less elevated than the 
average of the typical brunnea and has a more depressed suture. (Dali.) 
Type in United States National Museum, No. 60055. Type locality, 
Monterey, California. 
Range. Purisima to San Nicolas Island, California. 
Tegula montereyi Kiener, 1850 
Species General des Coquilles Vivantes, Trochus, 104; PI. 33, fig. 1. Tryon and Pilsbry, 
Manual of Conchology, 11:171; PI. 27, figs. 27, 28, 29. 
Testa umbilicata, tenuis, conica, sublaevigata, spiraliter et obsolete 
striata, pallide cenerea, epidermide cornea induta; anfractus 8 planulati, 
sutura vix impressa discreti; anfractus ultimus carinatus, infra planulatus 
et concentrice striatus; apertura ampla; margina dextro valde obliquo; area 
umbilicari alba, lata, funiculo spirali munita; columella dedio denticulata, 
et infra dentem emarginata. Operculum typicum, anfractus 12-13 gerens. 
(Kiener.) 
Shell umbilicate, strictly conical, rather thin, light olivaceous or pale 
corneous; spire conical, with nearly straight outlines; apex acute; sutures 
linear; whorls seven, flattened, encircled by numerous fine lirae, which be¬ 
come obsolete on the lower whorl, which shows usually very ill-defined 
obliquely descending small folds, at right angles to the incremental striae; 
body-whorl acutely angular at the periphery; base flat, spirally, subobso- 
letely lirate; aperture subhorizontal; outer lip thin, margined with brown or 
corneous; columella subhorizontal, curved, toothed below the middle, re¬ 
ceding above, not spreading around the umbilicus as in the other species; 
umbilicus funnel-shaped, rapidly becoming very narrow, white within, its 
edge defined by an angle. Alt., 28-29; diam., 34—42 mm. (Tryon and 
Pilsbry, Manual of Conchology .) 
Type in Museum, Paris. Type locality, California coast. 
Range. Bolinas Bay to Santa Barbara Islands, California. Fossil : 
Pleistocene, Santa Barbara to San Diego, California; Pliocene, San Pedro. 
Described as Trochus montereyi Kiener. 
Tegula rugosa A. Adams, 1851 
Proceedings, Zoological Society of London, 182. Tryon and Pilsbry, Manual of Con¬ 
chology, 11:173; PI. 26, fig. 26. 
C. testa turbinato-conoidali, profunde umbilicata, luteo-fusca, nigro 
variegata, longitudinaliter nodoso-plicata, transversim sulcata; anfractu 
ultimo rotundato, infra suturam angustato; columella incurvata, antice 
