372 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [1G2] 



edge of mantle with a well-develbped median dorsal lobe, and well- 

 marked lateral angles. Fins broad transversely, short, less than half 

 the length of the mantle; outer edges well rounded; posterior end very 

 obtuse. Arms all short, the two upper pairs much shorter than the two 

 lower, the dorsal pair very short, considerably shorter than the upper 

 lateral ones; ventral and lower lateral arms nearly equal in length. 

 The dorsal arms are strongly compressed, with a well-marked, thin, 

 dorsal keel; those of the second pair squarish at base, without a keel; 

 those of the third pair are strongly compressed, bent outward at the 

 base, and furnished with a high median keel, starting from the base, but 

 highest in the middle; ventral arms triangular at base, with a wide 

 membrane on the upper angle, which expands at the base and connects 

 them with the third pair; a narrower membrane runs along the ventral 

 margins. Tentacular arms rather stout at base, compressed farther out, 

 in extension about as long as the body; club well developed, about 

 twice as broad as the rest of the arm; its dorsal keel thin, elevated, 

 oblique, commencing at about the middle of the club and extending to 

 the tip. The larger tentacular suckers are very regularly arranged in 

 four rows of 8 to 10 each, the lateral ones being not very much smaller 

 than the median ones. The distal part of the club is covered with four 

 regular rows of small suckers, and there is a terminal group of smaller, 

 smooth-rimmed ones. The largest median suckers (Plate XXXI, figs 4b, 

 4c) are broad, cup-shaped, rather larger than the largest suckers of the 

 lateral arms; their horny rims are armed with regular, sharp, incurved 

 teeth, smaller on the inner side of the sucker, but there are few or no 

 small teeth, alternating with the larger ones. The lateral suckers are 

 relatively large, deep cup-shaped, oblique, with very sharp incurved 

 teeth on the outer margin. The membranous borders of the large 

 suckers are covered with minute, sharp, chitinous scales. 



The suckers of the short arms are very deep and oblique, cup-shaped; 

 their rims are much the highest on the outer or distal side, where the 

 edge is divided into several broad, bluntly rounded denticles, separated 

 by narrow intervals. 



The pen (Plate XXXI, fig. 4a) is short with a broad lanceolate blade ; 

 the narrow part of the shaft is short ; a thin border, widening backward 

 to the blade, commences about half way between the tip and the proper 

 blade; the latter is broad and thin, marked with divergent hues ; pos- 

 terior end obtuse. 



In the female theie is no tubercle on the buccal membrane for the 

 attachment of spermatophores. I have not seen the male, nor has any 

 writer described it distinctively. * 



* Professor Steenstrup, in a recent paper, (Sepiadariuin og Idiosepius, < Vid. Selsk. 

 Skr., 6 R., 1, 3, p. 242, note, 1881) has proposed to make this species the type of a 

 new genus, Lolliguncula, because the female receives the spermatophores on the inner 

 surface of the mantle, —a character that seems to he scarcely of generic value, unless 

 it be reinforced by anutomical differences now unknown. Such characters may possi- 

 bly exist in the unknown males. 



