OCTOPID^ : OCTOPUS. 7 



Octopus unicirrhus Delle Chiaje, D'Orh. et Feruss. Mem. des Ceph. 

 AceL 73. 



Hob. Atlantic Ocean, Mediterranean, Indian Ocean, Red Sea. 



a. Yarmouth. Adult. In spirits. 



"ff Body smooth^ not bearded. 



2. Octopus -S^gina. 



Body oblong, elongated, smooth, marbled, not bearded. Nape, 

 eyes, and back of head smooth. Eyes very prominent. Arms 

 rather elongate; proportionate length, 4, 3, 2, 1. AYeb short, 

 rather wider below, smooth above. Cups rather large and 

 rather far apart, equal ; the five or six lower ones far apart, and 

 in a single series. 



Hab. . 



a. ? In spirits . 



3. Octopus aranea. 



Body oblong, short, smooth. Head short, narrow, very smooth; ocu- 

 lar beards one, posterior. Arms much elongated, smooth, slender 

 very unequal; order of their length, 4, 3, 2, 1. Cups small, close, 

 numerous; about 180 on the longest arms; the four nearest the 

 mouth in a single line. Web short. ^ In spirit blackish, colouring 

 dots very small. 



Octopus aranea i)'OrZ>. Poidpes, t. 5. 1825; D'Orb. et Feruss. Mem. 



des Ceph. Acet. 57., Poulpes, t. 5. ; UOrb. Moll. Viv. et Fos. i. 



184. p. 23. 

 Octopus filamentosus Blainv, Diet, des So. Nat. xliii. 188. 1826. 



Hab. Isle of France. 



ff t Back slightly granular. 



4. Octopus Gertonea. 



Body (in spirits) marbled, smooth. Head and base of the arms very 

 minutely granular. Eyes with one fleshy tubercle, and one 

 behind the eye ; upper eyelid rugose. Arms moderate, very 

 thick at the base ; proportionate length, 3, 4, 2, 1, Web broad, 

 upper surface finely granulated. Cups large, subequal ; the three 

 or four lowest rather distant, and one-rowed. 



Hab. Coast of Brazils. 



a. Bahia. In spirits. 



B 4 



