CEPHALOPODA OF THE HAWAIIAN ISLANDS. 305 



Scasurgus patagiatus Berry 1913. (PI. xlvii, fig. 2, 3; pi. xlviii, fig. 1.) 



Scaeurgus, sp. Berry 1909, p. 418 (locality record only). 

 Scaeurgus patagiatus Berry 1913, p. 564. 



Body short, rounded, firm, compact, nearly or quite as broad as long; widest anteriorly or near 

 the middle, evenly rounded behind; much flattened ventrally, with a conspicuous median longitudi- 

 nal groove; dorsum arched; sides rounded, often flattened or sunken above the periphery in preserved 

 material giving an angular appearance. Mantle opening wide, reaching a little more than halfway 

 between the funnel and eye. Surface (except on the funnel and ventral aspect of the head and 

 arms) everywhere thickly covered with small distinct rounded papilla or tubercles; on the ventral 

 surface of the mantle they are in the main separate and irregularly but evenly distributed; on the 

 dorsal surface they have a tendency to run together and arrange themselves in more or less irregular 

 longitudinal series, occasionally forming short low ridges similar to those which have been remarked 

 in Polypus marmoraius . These ridges also recall those of P. marmoraius in their position and frequent 

 bilateral symmetry; four of them form the usual quadrilateral on the dorsum, besides various others 

 more laterally situated. A conspicuous series of similar but less obscure ridges begins a short distance 

 from the base of the arms (affecting all of them except the ventral pair), and extends along their outer 

 surfaces, reaching its maximum on the third pair, where it results in a nearly 

 continuous fold. A narrow keel-like ridgeor fold bounds the periphery of the 

 body from a point on either side opposite the base of the funnel nearly to the 

 posterior; in the gap where the resulting lateral folds are discontinuous on the 

 extreme posterior point of the body is a large soft vertical papilla of elongate- 

 conical shape. A large warted or branched papilla is situated obliquely above 

 and behind each eye, with a smaller one just in front and directly over the 

 eye opening. 



Head broad, but considerably narrower than the body, from which it is 

 separated by a decided but variable constriction; short, rather small. Eyes ^ —Sacurms Patagiatus 

 large and prominent. Funnel large, conical; broadly adherent above to the Uos), outline drawing of 

 head for over half its length, the free extremity reaching about halfway to the funnel laid open medio- 

 umbrella margin . Funnel organ well developed as a broad W-shaped band cen- ventrally to expose the fun- 

 ., , 1 „,.;.,. .. . . . .. . ,, . nel organ, female, X 2. 



tenng on the dorsal wall of the interior cavity anterior to its center (fig. 19). 



Arms robust, squarish, rapidly tapering; of moderate length, but over twice that of the body add 

 head taken together; subequal, the se.cond pair usually a very little the longest. Umbrella well devel- 

 oped, especially between the dorsal arms, where it reaches for nearly one-fourth of their total length; 

 it is continued along the outer margin of each arm to the extremity as a narrow contractile webbing; 

 this membrane appears on both dorsal and ventral angles of the arm, but is invariably widest and most 

 persistent ventrally. Suckers numerous and fairly large; the first two to four in a single row, the re- 

 mainder quite closely ranked in a double series. In the male one of the suckers on each third arm 

 opposite the margin of the umbrella is obviously larger than the rest. 



Third left arm in male a little shorter than its mate of the opposite side and prominently hecto- 

 cotylized; the conspicuous and ample sperm canal in the margin of the ventral membrane terminates 

 in a long slender acutely conical calamus, over one-half as long as the entire hectocotylus; ligula copu- 

 latoria spoon shaped, its inner surface deeply excavated, nearly smooth, and protected by the heavily 

 incurved margin, which may almost completely inclose the cavity. (PI. XLVn, fig. 3; pi. xlviii, fig. 1.) 



Color of alcoholic specimens, in general a pale brownish buff, clouded or lightly marbled above with 

 a light chocolate of somewhat varying intensity. Chromatophores small and very numerous, indistin- 

 guishable ventrally. Specimens preserved in formalin lose every vestige of pigmentation. 



The following notes in regard to the color of this beautiful species during life appear on the reverse 

 of the station label accompanying the type specimen, in the handwriting of Dr. W. K. Fisher: " Ventral 

 surface of body opalescent blue and pink. Light emerald green about eyes. Reddish brown chroma- 

 tophores on dorsum and sepia ones over eyes. General color of animal when chromatophores are con- 

 tracted is very pale green." 



