70 



California Art & Nature. 



71 



MYSELLA ALEUTICA Ball. 



"Shell small, solid, ovate, white, 

 smooth, covered with a polished straw- 

 colored epidermis with usually 3 or 4 

 concentric darker colored zones; beaks 

 distinct, often eroded, ends and base 

 rounded, valves moderately convex, 

 teeth strong in the right valve, anterior 

 adductor scar narrow and rather ir- 

 regular, elongated, posterior rounded, 

 pallial scar linear. Lon. 4.3, alt. 3.3, 

 diam. 2 mm. Bering sea, the Aleutians, 

 and east to Sitka bay, Alaska,"— Dall, U 

 S Na Mu pr 21: 892-3, 881, t 87 f 6 (1899). 



MYSELLA TUMIDA Cpr. 



Dall, U S Na Mu pr 21: 881, 892, t 87 f 7 

 (1899). 



Tellimya tumida Cpr, Suppl R Brit 

 Assoc 1863: 88, 97, 129 (1864). Phila ac pr 

 1865: 58. 



Alaska peninsula, south to San Diego, 

 California. 



ERYCINA COMPRESSA Dall. 



"Shell large, subquadrate, thin, mod- 

 erately compressed, white, covered with 

 a conspicuous, thin, wrinkled, partly 

 glossy periostracum; nearly equilateral, 

 the posterior end slightly broader, both 

 ends rounded, the basal margin nearly 

 straight; beaks inconspicuous, surface 

 with strong, irregular incremental l.nes, 

 but no radial sculpture; pallial scar 

 rather wide and irregular, merging into 

 the subequal, rather narrow adductor 

 scars; resilium large, wide, and long, 

 more or less calcareous ventrally, left 

 valve with one obscure cardinal tooth, 

 right valve with the tooth better devel- 

 oped; the right dorsal valve margins 

 overlap those of the left valve a little, 

 but there are no distinct lamellae. Lon. 

 IJ, alt. 13, diam. 6 mm. Dredged on 

 muddy bottom in from, 4 to 28 fathoms in 

 the eastern part of Bering sea, south 

 of Nunivak Island, the eastern Aleutians, 

 and southward to Sitka, Alaska, by W. 

 H. Dall."— Dall, U S Na Mu pr 21: 888, 

 88J, t 87. f 1, 8 (1890), 



ERYCINA RUGIFERA Cpr. 



Dall U S Na Mu pr 21: 887, 880, t 87 f 4 

 (1S99). 



Pythina rugifera Cpr Supple R Brit 

 >ssoc 1863; 602, 643 (1864). Phila ac pr 1865; 

 57. 



Lepton rude (Dall ms) Whiteaves R 

 Progr Geol Surv Canada 1878-79: 198 B, 

 f 2 (1880). 



Lives attached to the abdomen of Geb a 

 pugetensis Dane, a burrowing crustacean. 

 Puget Sound. 



MYSELLA PEDROANA Dall. 



"Shell large, thin, rounded, rather com- 

 pressed, white, with a concentrically 

 rugoso pale-brownish epidermis (to 

 which, in the type, adheres a good deal 

 of blackish oxide of iron); beaks incon- 

 spicuous; surface with coarse, concentric, 

 incremental lines; inequilateral; the pos- 

 terior side short, dorsal margins merging 

 roundly into the! distal and they into the 

 basal margin, which last is nearly 

 straight; hinge feeble, the right anterior 

 lamella elongated and very slender, the 



posterior one shorter and stouter, the 

 resilium subumbonal and very small; 

 adductor scars small, the pallial scar 

 linear. Lon. 9, alt. 7.3, diam. 3 mm. A 

 single shell found on the beach at San 

 Pedro, California."— Dall U S Na Mu pr 

 21: 893, 881, t 88 f 4 (1899). 



MYSELLA PLANATA Dall. 



Dall, U S Na Mu pr 881, 892 t 88 f 12 

 (1899). 



Tellimya planata Dall, in Krause; 

 Beitr Moll fauna des Beringsmeers, Arch 

 f Naturg 51 pt 1: 34, t 3 f 6 a-d (18&5). 



Bering Strait, south to the Aleutians 

 and east to the Shumagin Islands, 

 Alaska. 



SCHIZOTHAERUS NUTTALLII Conrad 



Tresufi maxim'-a Midd. 



Lutraria capax Gould. 



Puget Sound to San D:eg», California. 

 Closely appioachiijg the best oysters in 

 tenderness and deiicacy. 



CACTUS NOTES. 



CKREUS CAESPITOSUS Engelm. The 

 Lace Cactus, a beautiful little species, found in 

 'lexas and Mexico, with large magenta col- 

 ored flowers, blooming when only 2 !nche.s 

 high, the flowers 2 inches across, and lasting 

 i days. The plant is enveloped with fine 

 white spines, and can be "handled without 

 jiloves." 



OPUNTIA OCCIDENTALIS Engelm. A 

 Prickly Pear of luxuriant growth, with stout 

 woody stems and innumerable branches : joints 

 9 to 12 inches long and 6 to 8 inches across; 

 flower yellowish and orange; fruit 2 inches 

 long, very sour and juicy. 



OPUNTIA LEPT0CAULI3 D C. This is the 

 widely adver.ised O. frutescens, Enge'm., of 

 Texas and Mexico; 2 to 4 feet high, wi h slen- 

 der terete joints a fourth of an inch thick; 

 very small yellow flowers; berries scarlet. 

 Quite ornamental and a favorite with cactus 

 fanciers. 



OPUNTIA PROLIFERA Engelmann. This 

 densely-branching shrub bears a small flower 

 of a pomegranate purple, and once grew in 

 great abundance where the city of San Diego 

 now exists. 



CERBU3 MAC DONALDIAE Hook. A hand- 

 STHiF slender-stem-ied spec es. of Tonduras, 

 Central America, and one of the finest of the 

 night-flowering ca-ti. Fo.veis 12 10 14 inches 

 across, with creamy white lanceolate petals, 

 with an outer fringe of narrow yello-w sepas; 

 with a fragrance like vanilla. 



CEREUS TRIANGULARIS Miller. The 

 Strawberry Pear bears most beautiful flowers 

 scarcely less handsome than C. grandiflorus, 

 measuring 12 to 14 inches across; the bright 

 scarlet fruit, the size of a goose's egg, has 

 a flavor compared to strawberries; the plant 

 Is easily distinguished by its triangular stems, 

 and makes a most luxuriant growth, climbing 

 readily to the top of its support. 



OPUNTIA SERPENTINA Engelm. Procum- 

 bent, with yellow flowers, comparatively rare 

 in cactus collections. 



OPUNTIA SUBULATA Engelm. A beautiful 

 tropical species of rapid and rank growth, 

 with persistent vivid green leaves, and long, 

 straight spines. 



