CHIROTEUTHIS. 165 



ridge, and row of eleven acute, four-pointed tubercles, and many 

 smaller ones on either ventral side of the body ; fins semicircular, 

 broad, together subrhomboidal ; sessile arms large, conical, very 

 contractile, unequal, proportionate lengths 3, 2, 4, 1; cups nearly 

 spherical, rings oblique. Shell elongate, thin, very narrow ante- 

 riorly, lanceolate, rather dilated behind ; tip very sharp, attenu- 

 ated, solid. Total length, 6 inches. 



Indian Ocean. 



As already stated, D'Orbigiiy and dray have confounded L. 

 cyclura, Lesueur, a smooth form, with this very remarkable and 

 distinct armored species : which is the type of Perotis, Esch. 



L. RETNIIARDTII, Steenstrup. 



Body with a toothed, cartilaginous band down the median line 

 of the back ; also two other toothed cartilaginous bands or ribs 

 on each side of the body, which meet at an acute angle exactly 

 at the points where the mantle is united with the funnel on each 

 side ; the proportions of the arms are 3, 2, 4, 1, and they on!}' 

 bear two series of suckers; the tentacles have four rows of 

 suckers on the outer third, which arc continued in a scattered 

 arrangement over the middle third ; the fins are terminally 



small and roundish. 



Azores; Tropical Atlantic. 



This is another remarkable species, and seems to differ from 

 L. guttata in having two rows of tubercles instead of one on 

 each side of the body. It has not been figured. 



Family VII. CHIROTEUTHID^E. 



Genus CHIROTEUTHIS, Orb. 



The great cephalic development of the animals of this very 

 restricted genus, the immense length of the tentacles and the 

 peculiar armament of their clubs, and the gladius expanded at 

 each end, form excellent distinctive characters from the Loli- 

 gopsidse. 



C. YERANYI, Per. PI. 70, figs. 2(55-271. 



Bod} T smooth ; fins semicircular, together heart-shaped ; head 

 large ; sessile arms very large, rounded, acuminate, order of 

 length 4, 3, 2, 1 ; rings of the suckers on the three upper pairs 



