LOLIGOPSIS. 509 



Oenus LOLIGOPSIS, Lamarck. 1812. 



Arms short, cups in two rows ; tentacular arms slender ; funnel 

 without a valve. Pen slender, with a minute conical appendix. 



Loligopsis pavo. 



Plate XXVI. Figs. 341 -344. 



Ldigo pavo, Lesueur, Journ. Ac. Nat. Sc. Phila. ii. 96, plate (1821). -De Kay, N. Y. 



Moll. 4, pi. 38, fig. 353 (1843). 

 Loligopsis pavo, Ferussac and D'Oruigny, Hist. Nat. ties Ceph. 3-21, pi. 4, figs. 1-8 



(1S3.'3- 1848). —Gray, Brit. Mus. Ccph. 40 ( 1849). — Stimpson, Check Lists, 6 



(I860). 



Sac much elongated, rounded ; eyes very large ; arms very short, 

 depressed ; fin cordate, terminated in a point ; bone very narrow 

 anteriorly, somewhat dilated posteriorly, and sub-gelatinous. (Le- 

 siieiir.} 



This species has been catalogued from New England ( Stimpson) ; 

 New York (De Kai/). 



The figure referred to docs not agree entirely with Lesueur's de- 

 scri[)tion and figure, especially in the shape of the fins. It is prin- 

 cipally from the peculiar " ocellations " of the surface that I believe 

 my figure may represent L. pavo. It is from a drawing by Mr. 

 Burkhardt of a specimen taken by Professor Agassiz at Province- 

 town. 



Lesueur's description here follows : — 



Tliis species is remarkable by its elongated, pointed, and very 

 soft sac ; by its bone, which is sub-equal in its greater length ante- 

 riorly, and enlarged toward the base, where it is terminated in an 

 obtuse point. The fins are united and oblong-cordate, entire at the 

 base, and spreading from the sac, which is narrow, smooth, and, as 

 well as the head and arms, covered on every part with very large 

 ocellations, which are connected together by smaller intermediate 

 ones. General color, deep carmine brown ; head small, eyes large, 

 prominent, and directed more forward than laterally ; neck narrow, 

 short ; arms very short, furnished with two series of suckers, sup- 

 ported by narrow pedicles, which are fixed upon the margin at the 

 base of the membrane and toward the narrowest side of the sucker, 

 which is truncated very obliquely, the larger side being exterior, 

 and the narrower interior ; they are also distant from each other ; 



