306 THE DOLABELLINAE. 



8. Dolabella elongata Sowerby, 1868. 



Dolabella elongata Sowerby, Conch, icon., 1870, 16, pi. 1, f. 2a, b; Pilsbry, Tryon's Manual conch., 

 1896, 16, p. 1.56, pi. 27, f. 31, 32; Cles.sin, Martini and Chemnitz's Syst. conchylien-cabinet, 

 1899, 1, 8, p. 25, taf. 10, f . 3, 4. 



Habitat : — Indian Ocean, Seychelles Islands. 



9. Dolabella califomica Stearns, 1878. 



Dolabella californica Stearn.s, Proc. Acad. nat. sci. Phila., 1879, p. 395, pi. 7, f. 1, 2; Proc. U. S. N. M., 

 1893, 16, p. 341; 1894, 17, p. 158; Pilsbry, Nautilus, 1895, 9, p. 73; Tryon's Manual conch., 

 1896, 16, p. 159, pi. 66, f. 14-16. 



Habitat. — Mulege Bay, Gulf of California, West Coast of Mexico. 



10. Dolabella neira Sowerby, 1899. 



Dolabella neira Sowerby, Clessin, Martini and Chemnitz's Syst. conchylien-cabinet, 1899, 1, 8, p. 27, 

 taf. 10, f. 1. 



Habitat: — Banda Neira Island, Moluccas. 



A comparison of the Easter Island specimen with the descriptions of the 

 other known Dolabellinae renders it clear that it represents a new and unde- 

 scribed species. I take great pleasure in naming it in memory of our great 

 zoologist and oceanographer, Alexander Agassiz. 



Dolabella agassizi, n. .sp. 



Length 160 mm. or more, the maximum diameter 80 mm., greatest circum- 

 ference 210 mm., at epipodia, tapering forward to 105 mm., at the anterior end 

 of the bluntly conical body. Parapodia low, thick and fleshy, the dorsal sUt 

 between them one third the body-length. Posterior disc large, bounded by a 

 smooth ridge. General surface of the body smooth, slightly tuberculate in the 

 head-region, but destitute of cirrhi or processes. Anterior tentacles and rhino- 

 phores cyUndro-conic, close together, separated by about 1/10 the body-length, 

 bases of the rhinophores moderately wide apart. 



Color light copper-green, the inner edges of the parapodia and (at least) 

 the anterior floor of the palUal chamber vinous purple. 



Shell moderately large and strong, hatchet shaped, covered mth light amber 

 cuticle. Spire loosely coiled, heavily calloused and rough. Margin broadly 

 reflexed dorsally behind, lessening and disappearing in front. Posterior sinus 

 deep with a narrow reflexed dorsal margin. Length 54 mm., breadth 31 imii., 

 altitude 6.0 mm. 



Habitat: — Easter Island, South Pacific Ocean. 



