346 



A, M Vey'Hll — North American Cephalopods. 



smaller. The suckers of the sessile arms are deep, very oblique, with 

 a high rim, which has on the outer margin a number of regular, 

 long, slender teeth, rather close together. 



The whole surface is rather regularly and closely spotted with 

 purple chromatophores. 



The eggs are large, 5'""' to 8""" in diameter, and comparatively few 

 in number. In one female (No. 379) taken in July, the oviduct was 

 distended with the eggs, which have a reticulated surface before 

 reaching the glandular portion. This female had spermatophores 

 attached to and around an elevated area on the inner ventral surface 

 of the inner buccal membrane. 



The oviduct is large and its external orifice has a wide ear-shaped 

 border, more complicated than in Loligo. The nidamental glands 

 correspond nearly with those of Loligo, but are relatively larger. 

 In some of the males, taken in July, the spermatophore-sac and a 

 saccular dilation near the orifice of the efierent duct, were filled with 

 spermatophores, much like those of Loligo. 



The male has the left ventral arm hectocotylized much as in Loligo. 

 The stems of the suckers, for a considerable distance, toward the tip 

 of the arm, become long, stout, conical, and many of them, in both 

 rows, lack the rudimentary suckers. 



This species is widely distributed along the tropical coasts of 

 America, and throughoiit the West Indies. Martinique (Blainville) ; 

 Honduras (Gray). 



Specimens examined. 



The genus Sepioteiithis is closely related to Loligo in all external 

 characters, but its fins extend along nearly the whole length of the 

 mantle, and the body is stouter, more ovate, and less pointed behind 

 than in Loligo, so that the form is somewhat like that of Sepia. 

 The pen is thin and lanceolate, nearly as in Loligo, but in many 

 species the blade is thickened toward the margins. The internal 

 anatomy is, however, very different from Loligo, in several respects. 

 The ovary is short and thick, and confined more to the posterior por- 

 tion of the body. The eggs are comparatively few and very large, 

 being 5""" to 8""" in diameter, in our species. 



