170 MANUAL OF THE MOLLUSCa, 
Distribution, 7 species. Coasts of Norway, Britain, Mediter- 
ranean, Mauritius, Japan, Australia. 
Sub-genus. Rossia, Owen (R. palpebrosa). Synonym, Hetero- 
teuthis (Gray). Mantle, supported by a cervical ridge and 
groove. Suckers in two rows on the tentacles. First left arm 
hectocotylized throughout its length, and the corresponding 
right one in the middle. Length three to five inches. 
Distribution, 6 species. Regent Inlet, Britain, Mediterranean, 
Manilla. 
Sub-family B. Oigopside, D’Orbigny. 
Hyes naked. Fins always terminal, and united, forming a 
rhomb. 
LoxLicopsis, Lam. 1812. 
Etymology, loligo, and opsis, like. 
Synonyms, Leachia, Les., 1821; Perotis, Eschscholtz, 1827; 
Taonius, Steenstrup, 1861. 
Type, Li. pavo (Lesueur). 
Body elongated, mantle supported in front by a branchial 
septum. Arms short. Cups in two rows. Tentacles slender, 
often mutilated. Funnel valveless. 
Pen slender, with a minute conical appendix. Length from 
six to twelve inches. 
Distribution, pelagic, 8 species. North Sea, Atlantic, Medi- 
terranean, India, Japan, South Sea. 
CHEIROTEUTHIS, D’Orbigny. 
Etymology, cheir, the hand, and teuthis. 
Type, O. veranu, Fer. 
Mantle supported in front by aileos, Funnel valyeless. Ven- 
tral arms very long. Tentacles extremely elongated, slender, 
with distant sessile cups on the peduncles, and four rows of 
pedunculated claws on their expanded ends. 
Pen slender, slightly winged at each end. Length of the body 
two inches; to the tips of the arms eight inches; to the ends of 
the tentacles three feet. 
Distribution, 2 species. Atlantic, Mediterranean; on gulf- 
weed in the open sea. 
HISTIOTEUTHIS, D’Orbigny. 
Etymology, histion, a veil, and teuthis. 
Type, H. bonelliana, Fér.’ Length 16 inches. 
Body short. ins terminal, rounded, Mantle supported io 
