212 rAT.IFORNIA ACADKMV OV SCIENCl'a. 



185. Mangilia angulata ('nrj>enler. 



Platk. VII, ric. !l. 



Mangilia angulata Cpr., Brit. Assn. Rept., 1863, p. 658; Ann. & M.ij;. Nat. Hist., 3rd vSti. , Xdl. 

 XV, 1S65, p. 395. Keep, West Coast Shells, \>. 55, 1892. Coopku, Bull. No. 4, ( al. 

 St. Mill. Bureau, 1894, Part 3, p. 27. 



Shell small, lurreted, elongate-fusiform; ape.x acute; whorls si.K, broad and angular, angle 

 being slightly posterior to middle; sculpture consists of ten prominent, rather shaqi, transverse 

 ridges which reach ma.xiniuni jjrominence on angle of whorl; suture deiply impressed, distinct, 

 aperture oblique, narrow, elliptical, drawn out anteriorly into a short, narrow canal; outer lip thin; 

 simple, arcuate; inner lip smooth. 



Dimensions. — Long. 8 mm.: lat. 3.2 mm.; body- whorl 5 mm.; aperture 4 mm.; defl. 

 33 degrees. 



Some of tlie shells show a very faint spiral sculpture. Distinguishable by 

 broad form and simple transverse sculpture. Specimens identified by J)r. Dall. 



Many specimens of this species in the State museum collection of fossils at 

 Berkelry are labeled "J/, variecjata." 



Kather common in the lower San Pedro series of Deadinan Island and San 

 Pedro; rare in the upper San Pedro series at Crawfish George's and Los Cerritos. 

 Found also in the Pleistocene at bath-house, Santa Barbara; Barlow's ranch, Ven- 

 tura, and at Spanish Bight and Pacific Beach, San Diego. The specimen figured 

 is from the lower San Pedro series at Deadman Island, and is now in the collection 

 of Delos Arnold. 



Living. — Puget Sound to Santa Barbara (Carpenter). 



Pleistocene. — San Pedro (Arnold): San Joaquin Bay, Orange County 

 (Bowers): Santa Barbara; Ventura; San Diego (Arnold). 



186. Mangilia hooveri, sp. nov. 



Plate IX, Fn;. 5. 



Shell small, elongate-fusiform, solid; spire elevated; apex mammilliform; whorls si.x, only 

 slightly convex, with about ten low, rounded, slightly oblique, transverse ridges; the first whorl is 

 smooth, while the next three are more convex than the lower ones, and have traces of spiral sculp- 

 ture; body-whorl with sculpture nearly obsolete; aperture elliptical, tapering to a very short canal 

 anteriorly; outer lip arcuate, thin; pillar quite long and straight. 



Dimensions. — Long. 10.9 mm.; lat. 3 mm.; body-whorl 6 mm.; aperture 4 mm.; defl. 

 20 degrees. 



Distinguishable by the slender form, nearly flat whorls, and the broad, low, 

 transverse ridges. The body-whorl resembles that of a small, elongate-pillared Dri/lia. 

 Pronounced new by Dr. Dall. Named in honor of Mr. T. J. Hoover of Stanford 

 University, California. 



Type from ui)per San Pedro series of San Pedro; rare. The specimen figured 

 is the type, and is now in the United States National Museum. 



Pleistocene. — San Pedro (Arnold). 



