326 CALIFORNIA At'ADKMY OV SCIENCES. 



375. Chlorostoma gallina Ftirbes. 



Trochiis ( A/onodoiita) galliua l-'its., I'mc. Zuol. Soc, 1.S50, p. 271, 1*1. XI, tig. «. 



Trochits gallina Fbs., Fischer. Coq. V'iv., p. 258, I'l. CXI, f\^. i. 



Chlorostoma v^allina FoRfiKS. Ci'R., Biii Assn. Rcpt., 1863, p. 652. Tkyiin, Man. Concli., \'<>1. XI, 

 p. 169, PI. XX. fig. 15: PI. XXVIII, figs. 52 and 53, 1889. Kef.p, West Coast .Siulls, 

 p. 84, fig. 70, 1892. Williamson, Proc. U. S. Nat. Miis.. V<>I. XV, 1892, p. 200. 



Shell conoiclal. thick; whorls five, flat, slightly shouldered jiosleriorly near suture in some 

 specimens; ornamentation consists of numerous obsolete spiral ridges, and irregular, oblique, trans- 

 verse ridges of varying prominence; suture distinct; umbilicus nearly obsolete; base flat, same orna- 

 mentation as whorls; outer lip elTuse, with prominent tubercle near umbilicus. 



Dimi-iisioiis. — Long. 20 mm.; lat. 21 mm.; defl. 80 degrees. 



Most specimen.s .^liow oljliciiie, iilteriiiitini; dark and li^lit, inc<rular lines, 

 which oliaractcrize tlie liviiit; shells. 



Rare in upper San Pedro series of San Pedro, Crawfish George's, and Dead- 

 man hiand. I'^onnd in the Plei-tocene at Pacific Peach, San Diego. 



Livimj. — Santa Barhara Islands to Lower California (Carpenter). 



Pleistocene. — San Pedro; San Diego (Aniolil). 



376. Chlorostoma montereyi Kiener. 



P1.ATK X, Fi.i. l!l. 



Trochus montereyi Kikner, Species Trochiis, PI. XXXIII, figs, i and \a. Fischer, Coq. Viv., 



p. 104, PI. XXXIil, fig. I. Tryon, Man. Conch., Vol. XI, p. 171, PI. XXVII, 



figs. 27, 28, 29, 1889. 

 Omphalius pfeifferi Phil., Cpr., Proc. Zool. Soc, 1856, p. 200. 

 Chlorostoma pfeifferi Phil., Cpr., Brit. Assn. Rept., 1863, p. 652. CiAnn, Pal. Cal., Vol. II, p. 84, 



1869. Cooper, 7ih Ann. Rept. Cal. St. Min., i8S8, p. 234. Keep, West Coast 



Shells, p. 83, 1892. 

 Chlorostoma montereyensis Kien., Williamson, Proc. U. S. Nat. Mas., Vol. XV, 1892, p. 200. 



Shell conical; whorls seven, flat (on some specimens the whorls have a shoulder on the 

 posterior part); suture distinct but not impressed; surface of upper five or si.\ whorls ornamented 

 with five flat, spiral ridges, the .space between the ridges being crossed by minute incremental lines, 

 which slope anteriorly at quite an angle; ornamentation on the rest of the whorls indistinct; base 

 flat, indistinctly ornamented as on the upper whorls; uniijiiicus open, smooth and slightly keeled 

 aperture elliptical. 



Dimensions. — Alt. 35 mm.; lat. 33 mm.; defl. 65 degrees. 



The specimen described was i(lcnti(i(Ml l)y Dr. Dall. 



Found in the Pliocene of Deadiuan Island; in the lower San Pedro series 

 of Deadinaii Island; and in the upper San Pedro series of Deadman Island, Crawfish 

 George's, and San Pedro. Found in the Pleistocene at Pacific lieach, San Diego. 

 The specimen figured is from the upper San Pedro series at Crawfish George's, and 

 is now in the collection of Delos Arnold. 



Living. — Baulinas Bay to San Diego (Cooper). 



