CEPHALOPODA OF THE HAWAIIAN ISLANDS. 
305 
Scaeuigus patagiatus Berry 1913. (PI. xlvii, fig. 2, 3; pi. xi,vin, fig. i.) 
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 stmken above the periphery in preserved 
material giving an angular appearance. Mantle opening wide, reaehing a little more than halfway 
between the funnel and eye. Surface (except on the funnel and ventral aspect of the head and 
arms) everywhere thiekly covered with small distinct rounded papillae 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 marmoratus. These ridges also recall those of P. marmoratus 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 ridge or fold bounds the periphery of the 
body from a point on either side opposite the base of the funnel nearly to the 
posterior; in tire 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 
large and prominent. Funnel large, conical; broadly adherent above to the 
head for over half its length, the free extremity reaching about haEway to the 
umbrella margin. Funnel organ well developed as a broad W-shaped band cen- 
tering 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 and 
head taken together; subequal, the second pair usually a very little the longest. Umbrella well devel- 
oped, especially between the dorsal arms, where it reaches for nearly one-foiuth of their total length; 
it is continued along the outer margin of eaeh 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. Suekers numerous and fairly large ; the first two to four in a sii^le 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 heetocotylus; ligula copu- 
latoria spoon shaped, its inner stuface deeply excavated, nearly smooth, and protected by the heavily 
incurved margin, which may almost completely inclose the cavity. (PI. XLvn, fig. 3; pi. Xivin, fig. i.) 
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 aecompanying 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.” 
Fig. 19. — Sacurgus patagiatus 
[20s), outline drawing of 
funnel laid open medio- 
ventrally to ex pose the fun- 
nel organ, female, X 2. 
