AKlSfOLD — THE PALEONTOLOGY AND STllATIGKAPHY OF SAN PEDRO. 225 



form found in this locality. There is no doubt about the close relationship of the 

 three species, barbarensis, robustus and rugosus, as the large series of each which the 

 writer has had during the preparation of this paper shows forms nearly, if not quite, 

 filling the gaps between the three types. JF'. barbarensis is probably the precursor 

 of the other two forms, and although it occurs in the later horizons in which the 

 other two sjiecies are the denominating types, still, judging by numbers, this form 

 reached its maximum development in the upper San Pedro series. 



Specimens identified by Dr. Dall. 



Common in the Pliocene, rare in the lower San Pedro series of Deadman 

 Island; one or two specimens found at each of Deadman Island, San Pedro, and 

 Crawfish George's in the upper San Pedro series. The specimen figured is from the 

 Pliocene at Deadman Island, and is now in the collection of Delos Arnold. This 

 and several other species have been reported from the "Miocene of Deadman 

 Island." Although the lowest horizon at Deadman Island is Miocene, still all of the 

 fossils reported as occurring in the Miocene at that place come out of a Pliocene 

 stratum which rests unconformably upon the Miocene. 



Living — San Pedro (Oldroyd; Raymond). 



Pleistocene. — Santa Barbara (Trask; Cooper): San Pedro (Arnold). 



Pliocene — San Pedro (Arnold). 



208. Fusus luteopictus Ball. 



Fiisi/s /ufeoprdus Dall, " ' Proc. Cal. Acad. Sci.,' 1877, p. 4." (Author's unauthorized reprint, 



issued March ig, 1877.) 

 Fiisics ambustus Gld., Cpr., Brit. Assn. Rapt., 1863, p. 664 (pars.); (not of Gould) {fide Dall.) 

 Fusus genicnlus CoNR., Gabb, Pal. Cal., Vol. II, p. 71, 1S69 (pars. syn. exel.) (7?^,? Dall). 

 Fusus avibustus (^LV).,(ZoovEK, Cal. Monterey Shells, Am. Jour. Conch., Vol. VI, p. 70; Geog. 



Cat., No. 787 (most Californian writers) {fide Dall). 

 Fusus lulcopichis Dall, Williamson, Proc. U. S. Nat. Mus., Vol. XV, 1S92, p. 217, PI. XX, fig. i. 



Shell small, fusiform; whorls five, convex, crossed by nine rounded ridges which reach their 

 maximum development on the middle of whorl; surface ornamented with three or four prominent 

 spiral lines, with finer ones sometimes intercalated; suture appressed; aperture subovate; outer lip 

 not thickened, with internal spiral lines; inner lip incrusted; columella short; canal very short, narrow. 



Dimeyisions. — Long. 19 mm.; lat. 10 mm.; body-whorl 13.5 mm.; aperture, including canal, 

 10 mm.; canal 3 mm.; defl. 38 degrees. 



Distinguishable by small size and very short canal. 



Rare in the lower San Pedro series at Deadman Island; common in the upper 

 San Pedro series at Crawfish George's, but rare in the same horizon at San Pedro, 

 Deadman Island and Los Cerritos. Most of the specimens obtained came from 

 Crawfish George's. 



Living. — Farallon Islands to San Diego (Dall). 



Pleistocene. — San Pedro (Arnold). 



(29) March 19, 1903. 



