5)2 CAi.iFtmMA ACAnr.MY or s( ii.m i-s. 



MOLLUSCOIDEA. 

 Class HRYOZOA. 



8. Bryozoa sp. indet. 



Small pifCH's of Itraiicliiiii^ brvozoa are found quite al)uii(laiitl\- in llio San 

 IV'dro Heries; Itut as no diaj^noscs of West Coast species are available, llieir j^encric 

 ami specific relations cannot be given. Among some material sent to Dr. J)all, and 

 identilieil bv liim, were several specimens which he labeled "Cupulifera sp." These 

 little saucer-shaped bryozoa are from the upper San Pedro deposits, at the lumber- 

 yard, north end of the San Pedro bluff. 



Class BRACHIOPODA.' 



Order .ARTIIROFOMAT.A. 



Family IV. TEREBRATULIDiE. 



Genus Terebratalia Biecher. 



Shell smooth or radially plaited; dorsal valve longitudinally impressed; hinge-line straight 

 or not much curved: beak with a flattened area on each side ol the deltidium; foramen large; del- 

 tidium incomplete; loop attached to the septum. 



Terebratalia obsoleta Dall is a characteristic species. 



[S. B.J= Terebratalia hemphilli Dull. 



Plate XVII, Figs. 1, 2 and 3. 

 Terebratalia hemphilli Dall (mss.) 



Shell of medium size, subcircular in outline, rather thin ; brachial valve with mesial flexure 

 concave ; surface of this valve sculptured by numerous fine incremental lines, and very faintly near 

 the ape.x by several radiating lines ; pedicle valve mesially conve.x, the sculpture being as in the 

 brachial valve. 



Dimensions. — Long. 56 mm.; lat. 57 mm.; diam. 30 mm. 



This species may be distinguished from T. amilld by its broader outline, larger 

 foramen, and nearly smooth surface. T. hemjyliilli is a form which shows much 

 variation both as regards its outline, degree of convexity or concavity of its valves, 

 and its sculpture. The drawings of this species were made by Mr. J. Howard 

 Wil.son, who first discovered the species. Found in the Pliocene of Packard's Hill, 

 Santa Barbara. 



Pliocene. — Santa Barbara (Wilson; Arnold). 



1 The clanifleatlon and generic description of Ibis class are from Trjon's " Stniclural and Sj-slcinallc Concliology." 

 ' All species described In tlils paper, but not occurring lu Ibe San Pedro fauna, are designated by the Initials of the locality from 

 whence tbey are described. 



