70 MANUAL OF THE MOLLUSCA. 





Distr., a single species (G. amana, Holier sp.) is found on the coast o 

 Greenland. 



SEPIOTEUTHIS, Blainville. 



Type, S. sepio'idea, Bl. Animal like loligo ; fins lateral, as long as th( 

 body. Length from 4 inches to 3 feet. 



Distr. > 13 sp., West Indies, Cape, Ked Sea, Java, Australia. 



BELOTEUTHIS, Minister. 



Efym.., belos, a dart and teuthis. 



Type, B. subcostata, Miinst. PL IT., fig. 8., L T . Lias, Wurtemberg. 



Pen, horny, lanceolate ; with a very broad shaft, pointed at each end 

 and small lateral wings. 



Distr., 6 sp. described by Miinster, considered varieties (differing in ag( 

 and sex), by M. D'Orbigny. 



GEOTEUTHIS, Miinster. 



Etym., ge, the earth (i. e. fossil) and teuthis. 



Syn., belemnosepia (Agassiz.) belopeltis (Yoltz) loligosepia (Quenstedt.)* 



Pen broad, pointed behind ; shaft broad, truncated in front ; lateral wing.' 

 shorter than the shaft. 



Fossil, 9 sp. U. Lias, Wurtemberg ; Calvados ; Lyme Regis. Severa 

 undescribed sp. in the Oxf. clay, Chippenharn. 



Besides the pens of this calamary the ink-bag, the muscular mantle, anc 

 the bases of the arms, are preserved in the Oxford clay. Some of the ink- 

 bags found in the Lias are nearly a foot in length, and are invested with f. 

 brilliant nacreous layer ; the ink forms excellent sepia. It is difficult to un- 

 derstand how these were preserved, as the recent calamaries " spill their ink" 

 on the slightest alarm. (Buckland}. 



LEPTOTEIJTHIS, Meyer. 



Etym., Leptos thin, and teuthis. 



Type, L. gigas Meyer, Oxford clay, Solenhofen. 



Pen very broad and rounded in front, pointed behind; with obscure diverg- 

 ing ribs. 



CRANCHIA, Leach, 1817. 



Named in honour of Mr. J. Cranch, naturalist to the Congo expedition. 



Type, C. scabra, Leach. 



Body large, ventricose ; fins small, terminal ; mantle supported in fronl 

 by a branchial septum. Length 2 inches. Head very small. Eyes fixed 

 Buccal membrane large, 8-lobed. Arms short, suckers in two rows. Tenta- 

 cular clubs finned behind, cups in 4 rows. Funnel valved. 



Pen long and narrow. 



* These names must be set aside, being incorrect in themselves, and founded or 

 a total misapprehension of the nature of the fossils. 



