27 



California Art & Nature 



^8 



WEST AMfiRICA.*r MOLLUSCA. 



BINNEYA NOTABILIS J. G. Cooper. 



Tryon, Monog T M 32, t 3 f 4. 



Depressed, smooth and shining, epider- 

 mis expending beyond margin of apeit- 

 uro, translucent when young, but opa- 

 quely thickened when old. Nuclear whorl 

 with about 30 delicate transverse ribs. 

 Pale brown. Diameter 12, height 3 mm. 



Santa Barbara Island, California; 

 Guadalupe Island, Baja California (G. 

 "W. Dunn). 



On the mainland near San Quintin, 

 Baja California (Orcutt). 



BORNIA PULCHRA Philippi. 



Dr!?, U S Na Mu pr 21: 880, 889. 



Kellia pulchra Philippi, Zeitschr fur 

 Mol 5: 149 (1848). "Probably a Pythina, 

 but unflgured."— Dall. "West America." 



BORNIA RETIFEiRA Dall. 



"Shell thin, white, moderately convex, 

 rounded, trigonal, nearly equilateral; 

 beaks distinct, not high; surface polished, 

 with faint incremental lines and minute 

 close punotations whose interspaces give 

 the effect of a fine netting; hinge normal, 

 delicate; adductor scars rounded, high 

 up; posterior basal margin very slightly 

 crenulate. Lon. 12, alt. 9, diam. 4 mm. 

 One left valve dredged by the U. S. Fish 

 Commission at station 2900, in 13 fath- 

 oms, off Santa Rosa Island, California." 

 — DrII. U S Na Mu pr 21: 889, 880, t 87 f 2 

 (1899). 



ANOMIA SUBCOSTATA Conrad. 



Obtusely ovate, rather thick; umbo of 

 larger valve ventricose; hinge thickened, 

 surface of the valve obtusely undulated 

 concentrically, and marked with waved, 

 wrinkled, interrupted ribs, much raised, 

 except towards the base, where they are 

 larger and somewhat tuberculiform; up- 

 per valve entire, or with obsolete radii 

 towards the base. 



Miocene: Carrizo creek, San Diego 

 county, Calif. 



MELAMPUS OLIVACEUS Cpr. 



Obconic; spire short, suture indistinct; 

 whorls 7-9, obtusely angulated on the 

 body below the suture; aperture long 

 and narrow, lip covered with sharp 

 lammae within, parietal wall with from 

 1 to ?, small revolving laminae; there is 

 also a stout fold on the columella Epi- 

 dermi.s olivaceous, below which the color 

 is white with patches or revolving lines 

 of red. Length 13, diameter 8 mm. 



Living: San Diego, California to Maz- 

 a;tla.n. 



Lagoon Head, Baja Ca'ifornia (Orcutt 

 1954); San Diego, Cal. (Orcutt 1929). 



PEDIPEg LIRATA, W. G. Binney. 



Shell globosely conical, solid, with reg- 

 ular spiral lines; spire short, with ob- 

 tuse apex; whorls 3, the upper ones 

 sma'l, the last equalling five-sixths of t^e 

 total length; aperture semicircular; 

 parietal wall with ptronsr *rr\'n'=- 

 verso lamina, columella with 2 acute ap- 



proximate teeth. White of yellowish. 

 Length 3.3, diameter 2.5 mm. 



Living: San Diego, California (Orcutt). 

 Cape San Lucas, Baja California. 



SELENITES CAELATA Mazyck. 



Shell small, depressed, brownish horn- 

 color, with very coarse, rough, crowded, 

 subseo.u. distant, irrtgular ribs, which are 

 obsolete at the apex; whorls 4, rounded, 

 somewhat inhated below, gradually in- 

 creasing*,, the last not descending at the 

 ai>' r ure; suti re mpres ed; umbilicus 

 wide, clearly exhibiting all the volutions; 

 aperture almost circular, slightly oblique; 

 pei\s Oiiie simple, its ends approaching 

 and joined by a very thin, transparent, 

 whitish callus, through which the ribs 

 are distinctly seen. Greater diameer 4, 

 heieht. 1.75 mm. Santa Barbara (Dr. L. 

 G. Yates); Hay ward's, Alameda county, 

 California (W. H. Dall). 



Mazyck, U S Na Mu pr 9:460-461, f 1886. 



SELENITES DURANTI. 



Mazyck, U S Na Mu pr 9:460-1 f (1S86). 



Helix durantl Newcomb, Ca ac pr 3:118 

 (1864). 



Patula durantl Tyron, Am J Conch 

 2:2i-'. t 4 f 53 (1866). Mong. T. M. 51, t 4 

 f E-'. 



Hyalina durantl Binney and Bland L-F 

 S 1:37, f 49 (1869). 



Macrocyclis durantl W G Binn T M 

 5:9';-, 18S. Man Am L S 85 f 49 (1885). 



'Shell depressed, discoidal, pale cor- 

 neous, under the lens minutely striated, 

 opaque, broadly and perspectively um- 

 bilicated; whorls 4, the last shelving but 

 not discending (at the apeture); suture 

 linear; aperture rounded, lunate, l.p 

 simple, the external and internal ap- 

 proaching. Santa Barbara Island."— 

 Newcomb. 



Tryon says: "spire not at all elevated, 

 perfectly plane above." 



Binney says: "with very coarse rough 

 striae." 



Diameter 5, height 1.75 mm. 



Pilsbry, Phila ac pr 1889, p 196, treats 

 Selenites caelata Mazyck as a variety 

 of this. 



SELENITES SPORTELLA Gould. 

 Tyron, Mong T M 33, t 3 f 7. 

 Macrocyclis sportella Gould. ' 



Whorls 5, the superior part of the last 

 ono fattened upon approaching the apert- 

 ure, rounded below; very light apple 

 green, dull, very closely and sharply 

 striate, reticulated by slight, revolving 

 lines; suture moderate, umbilicus mod- 

 erate and deep. Diameter 18 mm. Puget 

 Sound to San Diego, California (Orcutt). 



SELENITES VOYANA N^ewc. 



Depressed; whorls 5, convex, the last 

 declining towards the aperture and some- 

 what flattened oi* concave above, striate; 

 aperture sinuate above, the lip slightly 

 oxnanfled, its extremities joined by a 

 callu<? on the body whorl; below broadly 

 umbilicate. Pale horn color. Diameter 

 12.5 mm. San Diego to Trinity county, 

 California. 



Macrocy I's' voyana Newcomb. 



Tryon, Mong T M 34, t 3 f 9. 



