158 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Sek. 



Santa Margarita-San Pablo. This fauna is found through- 

 out the inner Coast Ranges of middle California, from Mt. 

 Diablo southward to the Coalinga region. Since the classic 

 works of Conrad and Gabb, it has been described by 

 R. Arnold,^" from the Salinas Valley and the Coalinga region 

 of the San Joaquin Valley; and by numerous writers upon 

 the region of Mt. Diablo, especially B. L. Clark,'^ who has 

 published a monograph on the entire San Pablo fauna. 



The most important species in the Santa Margarita-San 

 Pablo fauna are: Asterias remondi Gabb, Astrodapsis antiselli 

 Con., Astrodapsis tumidus Remond, Astrodapsis ivhit- 

 neyi Remond, Clyp easier brezverianiis Gabb, Dendr as- 

 ter gibbsi Gabb, Dendraster gabbi Remond, Discin- 

 isca oregoncnsis Dall, Tamiosoma gregaria Con., Amian- 

 tis dalli Clark, Area microdonta Con., Area trilineata Con., 

 Cardium ealiforniense Desh., Cardium meekannm Gabb, Car- 

 diuni quadrigenarium Con., Chione diabloensis Clark, Chione 

 pabloensis Clark, Chione securis Shum., Dosinia arnoldi Clark, 

 Dosinia merriami Clark, Dosinia ponderosa Gray, Glyeimeris 

 coalingensis Arn., Macoma andersoni Clark, Macoma pabloen- 

 sis Clark, Marcia oregonensis Con., Modiolus gabbi Clark, 

 Mulinia densata Con., My tikis coalingensis Arn., Ostrea att- 

 woodi Gabb, Ostrea titan Con., Panopea estrellana Con., Paphia 

 tenerrima Carp., Pecten crassicardo Con., Pecten estrellanus 

 Con., Pecten hohvayi Clark, Pecten pabloensis Con., Pecten 

 raymondi Clark, Pecten sancti-ludovici And., Pecten weaveri 

 Clark, Phacoides annulatiis Rv., Pinna alamedensis Yates, 

 Pitaria stalderi Clark, Spistda albaria Con., Spisula lenticularis 

 Gabb, Tellina diabloensis Clark, Tivela gabbi Clark, Agasoma 

 sinuatum Gabb, Astralium raymondi Clark, Cancellaria pab- 

 loensis Clark, CalyptrcEa iilosa Gabb, Calyptrcea inornata Gabb, 

 Chrysodomus diabloensis Clark, Chrysodomus imperialis Dall, 

 Gyrineum trampasense Clark, Ficus nodiferus Gabb, Hemifusus 

 dalli Clark, Neverita recluziana Petit, Siphonalia kellettii Fbs., 

 Trophon carisaenses And., Trophon ponder osus Gabb, Turri- 

 tella vanvlecki Arn. 



••The Tertiary and Quaternary Pectens of California. Prof. Paper No. 47, U. S. 

 Geol. Survey, (1906); and Paleontology of the Coalinga District, etc. Bull. 396, U. S. 

 Geol. Survey, (1909). 



»> Fauna of the San Pablo group of middle California. Univ. of Calif. Pub. Bull.. 

 Dept. Geol., vol. 8. No. 22, (1915), pp. 385-570. 



