28 CUTTLE FISHES. 



Of these genera, Loligo has two species 



1. vulgaris having the head long. 



2. media having the head short. 



and Ommastrephes has also two species 



i todarus mouth with small suckers on the lip, shell blade smooth, 



loom with a mid-rib and two others. 

 2. sagittatus no suckers near the mouth, shell blade striated 



longitudinally, loom with a mid-rib and more than two others. 



The Sepiolidae are represented by two genera : 



1. Rossia having the dorsal mantle free all round and supported 



by a ridge. 



2. Seplola having the dorsal mantle united to the head by a band. 



Of Rossia there are two species 



1. macrosoma having the head short and the eyes prominent. 



2. papilliftra having the head large and the eyes not prominent. 



Sepiola is represented by one species, rondektl, and the Sepiidae 

 are represented by one genus, Sepia, of which there are three 

 species 



1. officinaiis body broadly striped, fringe of shell broad at base. 



2. elegans body faintly striped, fringe of shell narrow at base. 



3. biserialis body lightly spotted, fringe of shell hooded at base. 

 Arranging our list systematically, we have : 



CEPHALOPODA. 



DIBRANCHIATA. 



OCTOPODA . 

 OCTOPODIDJE. 



I. Octopus vulgaris. 

 II. Eledone cirrosa. 



DEC A POD A . 

 LOLIGINIDvE. 



III. Loligo vulgaris. 



IV. Loligo media. 



V. Ommastrephes todarus. 

 VI. Ommastrephes sagittatus. 

 SEPIOLIDJE. 



VII. Rossia macrosoma. 

 VIII. Rossia papillifera. 

 IX. Sepiola rondeleti. 



8EPIIDJE. 



X. Sepia officinaiis. 

 XI. Sepia elegans. 

 XII. Sepia biserialis. 



