42 CATAIiOGUE OF CEPHALOPODA. 



LoHgo parvula Peron^ MS. (fide de Blainville). 

 Loligo Peronii Blainv. Journ. de Phys. 1823, p. 124., Diet, des 

 Sc. Nat xxvii. 136. 



Hab. South Seas. 



7. LOLIGOPSIS ? ? CHRYSOPHTALMOS. 



Body elongate, narrow ; a large oval eyed spot on thia middle of 

 the ventral surface. 



Loligopsis chrysophtalmos D'Orh. Moll. Viv. et Fos. \. 373. n. 4. 

 Sepia chrysophtalmos Tilesius Krusenstern, Voy. Atlas, t. 88. f. 



32. 33. 

 Loligopsis Tilesii Feruss. Calmars, t. 1. f. 2, 3, 4. 1825. 

 L. chromorpha D'Orh. 1. c. 373. 1845. 



Hah. Japan. 



8. Loligopsis dubia. 



Perothis dubia Rathke, Mem. Acad. Imp. Peter sb. par divers savans, 

 ii. 148. t. 1. f. 16, 17. 1835. 



Hab. ? 



38. Mantle free ; furnished with two internal cartilaginous Ridges on 

 the ventral Side, and a central one in the middle of the dorsal Side. 



a. Eyes naked. 



Fam. IIL CHIROTEUTHIDtE. 



Animal semipellucid. 



Body elongate, tapering behind. Mantle supported by two oblong 

 cartilages placed on the inside of the mantle, with grooves on 

 the base of the siphuncle, and a ridge or groove on the middle 

 of the back. Fins on the sides of the hinder part of the back. 



Head moderate. Ears without any crest. Eyes lateral, sessile, 

 naked, without any lacrymal sinus. Buccal membrane short. 

 Buccal aquiferous opening distinct. 



Arms very long. Tentacular arms not retractile, external to the 

 web. 



Siphuncle without any superior central band or internal valve. 



Shell internal, horny, elongate, slender, without any chambers. 



Loligopsidae (pars) B'Orh. Moll. Viv. et Fos. i. 377. 

 Cranchia sp. Ferussac, Mag. Zool. 1834. 

 Loligopsis sp. Ferussac, Mag. Zool. 1834. 



