THE TWO-GILLED GROUP 



3305 



to notice how, in obeying its burrowing propensity, the Sepiola adapts itself to its 

 circumstances and entirely deviates from its customary mode of procedure. To 

 make a sandpit for its hiding place, it will direct upon it strong jets of water 

 from its funnel, and thus blow out a cavity in which to seat itself, and allow the 



UPPER AND I.OWER VIEWS OF SEPIOI.A. 



disturbed particles to settle over and around it; but, as the peebles are too heavy to 

 be thus displaced by its blasting apparatus, it removes them, one at a time, by 

 means of its arms, which are large and strong in proportion to its little short 

 body." This same species, S. rondeletii, is common throughout the Mediterranean, 

 and is sold in the fish markets of Italy. 



Families ONTCHOTEUTHID^E and CHIROTBUTHID^E 



The squids belonging to the genus Onychoteuthis are very similar to Loligo, but 

 are distinguished by having the club of the tentacular arms furnished with strong 

 horny hooks. They are mostly of small size, only a few inches in length; but a 

 very large species (O. robusta) was observed off the coast of Northwest America, and 

 measured eight feet in length from the base of the arms to the posterior end of the 

 body. It has since been placed in the allied genus Andstroteuthis. One of the most 

 remarkable of the decapods is the genus Chiroteuthis > easily recognizable by the 

 enormous length of the tentacular arms, which are many times the length of the 



