40 
CATALOGUE OF CEPHALOPODA. 
* Smooth . — Loligopsis. 
1. Loligopsis pavo. 
Body smooth, very much elongated, conical, spotted with red. 
Fins terminal, short, soft, narrow, outline together heart-shaped, 
not notched in front. Sessile arms short, slender, three upper 
pair rounded. Cups much depressed, broad, oblique ; rings 
smooth exteriorly, inner edge divided into square teeth. Ten- 
tacular arms slender. Shell elongate, very thin, nearly gelati- 
nous, attenuated anteriorly, lanceolate posteriorly. 
Loligo pavo LeSueur , Journ. Acad. Nat. Sc. Philad. ii. 96. n. 5. t. 
ad p. 97. 18*21 ; Blainv. Journal de Phys. 1823, 33., Diet, des 
Sc. Nat. xxvii. 145. ; Feruss . Did. Class, iii. 67. n. 16. 
Loligopsis pavo D' Orb. 8f Feruss. Ceph. Acet. Calmars , t. 6. f. 1. 
4., Loligopsis , t. 4. f. 1. 8. 1839 ; D'Orh. Moll. Viv . et Fos. i. 
369. t. 23. f. 5—10. 
Hah. Atlantic Ocean, Arctic Seas, Madeira. 
2. Loligopsis ellipsoptera. 
Body funnel-shaped, semipellucid ; hinder part of the body elon- 
gate, tapering. Fins depressed, semicircular, rounded, outline 
together oblong. Siphuncle very large. Arms very unequal ; 
comparative length, 2, 3, 1,4; the second pair longest ; dorsal 
and ventral pairs small. Shell slender, penniform, horny. 
Loligopsis ellipsoptera Adams , Zool. Voy. Samar ang, Mollusca , t. 2. 
t. 1. f. 1. 
Hah. North Atlantic. 
Mr. Adams only describes eight arms, probably the peduncled 
arms were destroyed. Scarcely appears to differ from L. cyclura . 
3. Loligopsis Zyg^na. 
Fins half-oblong, together nearly square, narrower in front, 
broader and sinuous behind. Sessile arms, order of length, 1, 2, 
4, 3 ; two upper pair longest, two lower short ; the dorsal pair 
webbed at the base, rest free. Tentacular arms with small cups 
scattered on the elongated peduncles. 
Loligopsis Zygaena Verany , Cephal. ex Sicily , t. 1. f. 2. 
Hah. Sicily. 
4. Loligopsis vermicolaris. 
Neck very thin and long. Fins together subcordate. Sessile 
arms with very small distant cups in alternate series ; ten- 
