If) 2 SK1MOTKI THIS. 



S. MAURITIANA, Quoy and Gaim. PI. 61, figs. 20S. -200 ; pi. 62, 



fig. 206 ; pi. 64, fig. 207, 210. 



Body cylindrical, acuminated; (ins narrow, widest jit two- 

 thirds the length of the body: sessile arms unequal, order of 

 length 3, 4, 2, 1 ; the cups oblique, the rings with a number of 

 acute, hooked, curved teeth ; tentacles slender; the cups rather 

 oblique, with acute, distant, hooked teeth. Length, 17 inches. 



Mauritius. 

 S. MADAGASCARIENSIS, Gray. 



Body oblong, rounded behind; fins broad, rounded; cups of 

 tentacular arms unequal, four-rowed ; labial membrane with a 

 single cup at the tip of each angle. Shell lanceolate, rather 

 broad, upper part rather broad, blackish. 



Not figured; the description is sullicientlv indefinite. 



Madagascar. 

 S. ARCTIPINNIS, Gould. PI. 62, fig. 21 1. 



Body elongate, ovate-lanceolate; fins with rounded outlines. 

 broadest behind the middle; head rather narrow; sessile arms 

 short, stout, order of length 2, 4, 3, 1 ; tentacles long as the 

 body. Color brownish-purple with red dots. 



Length of body, 6 inches; total length, 16 inches. 



Sandwich Islands. 



Very closely allied to S. Mauritiana, but differs in the formula 

 of the arms ; it is also very close to the next species, but besides 

 the formula, there is a difference in the shell, which has thickened 

 margins. 



f f Shell lanceolate, the margins of the wings not thickened. 



S. LESSONIANA, Fer. and Orb. PL 62, fig. 212 ; pi. 64, 2l:J. 



Body elongated, violet-spotted ; fins dilated posteriorly; head 

 broad, ear crests thick, broad ; sessile arms, order of length IJ, 



4, _'. 1, their cups oblique with distant, acute teeth; tentacles 

 bluntly clubbed, the cups la r^e. very oblique, and armed with 

 acute, distant., curved teeth. Length, nearly :> feet. 



New Guinea ; New Zealand ; Java ; Malabar. 



5. LoLKHNiroitMis, Leuckart, PL 62. iig. 214; pi. 64. lig. 21;"). 

 Distinguished by its tins lu-inu wider posteriorly. ,S. J/'-mjtri- 



chii, Ehrenburg, from the same locality (not figured), has a simi- 



