CALLTANAX. 87 



coloring of this species ; its chocolate-colored interior is its most 

 characteristic feature, whilst the form is also tolerably constant. 

 Banded varieties may be recognized by the band being on the 

 upper part of the whorl, but not attaining the suture. There are 

 several synonyms, as follows : 0. flaveola, Duel. (fig. 40), 0. 

 variabilis, Gray, 0. Candida, Lam. (fig. 41), tigridella, Duclos 

 (figs. 42, 29, 28), 0. egira, Duel. (fig. 43). 



0. SIDELIA, Duel. PL 33, figs. 27, 44-50. 



Yellowish or orange-color, sometimes without markings, but 

 usually with more or less regular narrow zigzags of chestnut, 

 and occasionally with clouds of the same color; interior of 

 aperture bluish white to violet-red. Length, *7-'9 inch. 



China, Philippines, New Guinea, Viti Is., Madagascar. 



I unite here, under the oldest name, a number of species here- 

 tofore considered distinct ; the dark unspotted variety being the 

 0. volvaroides, Duel. (fig. 45), and immature specimens (one of 

 which is partly covered with chestnut), the 0. sidelia, Duel. 

 (figs. 44, 27). The mature painted shells are : 0. athenia, Duel, 

 (fig. 46) = 0. mucronata, Marr. (fig. 47), 0. lepida, Duel. (fig. 

 48), 0. todosina, Duel. (fig. 49), and O.faba, Marr. (fig 50). 



0. TESSELLATA, Lam. PL 33, fig. 51. 



Creamy white to yellowish brown, with irregular distant ash- 

 and chestnut-shaded spots covering the surface ; interior, and 

 columella deep violet. Length, 1 inch. 



Maldives, Java, Philippines, Australia, New Caledonia. 



0. CARNEOLA, Gmelin. PL 33, fig. 52. 



White, banded with rich orange-color, the bands usualty a 

 broad one above and below and a narrow one in the middle, 

 color sometimes shading into red, violet or olive ; fasciole and 

 aperture white, Length, -7-'9 inch. 



Java, Philippines, New Caledonia, Central Polynesia. 



Suhgenus Callianax, H. an 1 A. Adam?. 



0. BIPLICATA, Sowb. PL 34, fig. 58. 



Bluish gray, sometimes light brownish or olivaceous, fasciole 

 and interior of aperture violaceous ; columella biplicate at the 



base. Length, *75-l'25 inches. 



California. 



