52 U.S. NATIONAL MUSEUM BULLETIN 234 



other species of Euprymna known to me has such prominent keehng 

 of I, II, and III. 



Remarks. — A note within the jar, evidently in Dr. Bartsch's 

 handwriting, states "Sepiola?, 2 kinds, 1 smooth, 1 papillose." No 

 differences, however, could be found among the six specimens in the 

 jar, and evidently the character was transient and lost in preservation. 



Euprymna stenodactyla (Grant, 1833) 



Figure 8,a,b 



Sepiola stenodactyla Grant, 1833, p. 42. 



Euprymna stenodactyla, Steenstrup, 1887, p. 66. — Hoyle, 1904, p. 24. 



Material.— 13 cf cf, ML 18.5-11.2 mm., 3 99, ML 18.0-9.2 mm., 

 Tumindao Island Anchorage, Feb. 25, 1908; electric light; USNM 

 575335. 1 9, ML 12.0 mm., Panabutan Bay, Sulu Sea, Mindanao, 

 Feb. 5, 1908; electric light; USNM 575337. 1 d", ML 11.0 mm., 

 from Ulugan Bay, Palawan I., near mouth of Baheli River, seine, 

 Dec. 28, 1908; USNM 575336. 



Description. — The mantle is saccular, a little narrower than long 

 and united with the head in the nuchal region by a broad commissure. 

 The anterior margin projects forward, almost covering the pupil of 

 the eye on the sides. The ventral margin is strongly advanced, nearly 

 covering the long funnel, sinuous, slightly scalloped beneath the 

 funnel. Posteriorly the mantle is blunt and broadly rounded. 



The fins are semicircular in outline, meeting the mantle smoothly 

 behind. Anteriorly they are strongly auriculate, the inner margin of 

 the lobe lying adjacent to the mantle. They are attached at about 

 the middle of the mantle. 



The funnel is long, tapered, tubular, with narrow aperture. It is 

 free for most of its length. The funnel organ is composed of a broad, 

 compact, inverted V-shaped dorsal member and two oval ventral 

 pads which are pointed anteriorly. There is a very small, sharply 

 triangular valve. 



The head is compact, broad, with small eyes with small, nearly 

 round eyelids. A distinct raised olfactory pore lies well posterior to 

 the eye and slightly ventral. The head is decidedly flattened with 

 a shallow excavation for the funnel. All the arms are united by 

 a web except IV. The web is deep in sectors A and B, deepest in D, 

 shallow in C, and missing in E. 



The arms are comparatively long, and are about subequal, with 

 II the longest and IV the shortest, although they vary considerable. 

 All the arms are keeled, sometimes prominently, for the basal three- 

 fourths of the length. In a few specimens there was little or no 

 trace of the keel, but in others I and III were strongly keeled, II 



