386 
PACIFIC SCIENCE, VoL XIII, October, 1959 
low water in Hawaii and is apparently more 
common at depths of several fathoms. 
Conus pennaceus Born 
Fig. 3 in Plate 1 
Conus pennaceus Born, 1780, Test. Mus. Caes. 
Vind., p. 167, pL 7, fig. 14. 
Conus aulicus var. a Gmelin, 1791, Syst. Nat., 
ed. 13, p. 3394. 
Conus aulicus var. d Gmelin, 1791, Syst. Nat., 
ed. 13, p. 3394. 
Conus atiUcus var. y Gmelin, 1791, Syst. Nat., 
ed. 13, p. 3394. 
Conus aulicus var. e Gmelin, 1791, Syst. Nat., 
ed. 13, p. 3394. 
(.^) Conus omaria Hwass in Bruguiere, 1792, 
Enc. Meth. Vers, 1: 743, pL 344, fig. 3. 
Conus ruhiginosus Hwass in Bruguiere, 1792, 
Enc. Meth. Vers, 1: 746, pi. 344, figs. 1, 2. 
(.^) Conus praelatus Hwass in Bruguiere, 1792, 
Enc. Meth. Vers, 1: 746, pi. 345, fig. 4. 
Conus episcopus Hwass in Bruguiere, 1792, 
Enc. Meth. Vers, 1: 748, pi. 345, figs. 2, 6. 
(In part.) 
{}) Conus crocatus Lamarck, 1810, Ann. Mus. 
Hist. Nat. Paris, 15: 424. 
Q) Conus colubrinus 1810, Ann. Mus. 
Hist. Nat. Paris, 15: 433. 
Conus pennaceus Bruguiere. Lamarck, 1810, 
Ann. Mus. Hist. Nat. Paris, 15: 434. 
Conus omaria Hwass var. d* Reeve, 1843, 
Conch. Icon., 1: pi. 32, sp. 177, figs. 177a, 
177b. 
Conus pennaceus Lamarck. Reeve, 1843, 
Conch. Icon., 1: pi. 32, sp. 177. 
(?) Conus elisae¥iiQnQr, 1845, Spec. Gen. Icon. 
Coq, Viv., 2: pi. 64, figs. 1, la, p. 341. 
(.^) Conus stellatus Kiener, 1845, Spec. Gen. 
Icon. Coq. Viv., 2: pi. 99, fig. 3, p. 225. 
Conus madagascariensis Sowerby, 1858, Thes. 
Conchyl., 3: 43, pi. 24, fig. 582. 
Conus racemosus Sowerby, 1873, Proc. Zool. 
Soc. Lond., 1873: 721, pi. 59, fig. H. 
Conus auratus Hwass. Ostergaard, 1928, 
Bull. Bishop Mus., 51: 4, 29. (error). 
Darioconus racemosus (Sowerby). Cotton, 
1945, Rec. South Austral. Mus., 8: 257. 
Darioconus pennaceus (Bom) . Cotton, 1945, 
Rec. South Austral. Mus., 8: 257. 
Conus auratus Hwass. Morris, 1952, Field 
Guide to Shells Pac. Coast & Hawaii, p, 
202, col. pi. 7, fig. 3. (error). 
Cylinder pennaceus (Born). Kaicher, 1956, 
Indo-Pacific Sea Shells, Sect. 5, pi. 7, fig. 13. 
DESCRIPTION: Shell ventricose, robust, 
broad at the shoulder; maximum diameter 
equal to or greater than one half the shell 
length. Body whorl obsoletely striate, the 
striae more pronounced basally. Aperture 
rather broad, flaring slightly basally. Shoulder 
smooth, usually somewhat rounded, but vari- 
able. Spire variable, depressed to moderately 
elevated, concave to slightly convex, obso- 
letely striate; protoconch nipplelike, rose 
colored. Ground color reddish brown (yellow 
specimens are occasionally found), with nar- 
row transverse closely spaced lines, finely 
dotted with white. These areas are interrupted 
by large white subtrigonal blotches, grouped 
together like scales, usually forming a central 
band and sometimes additional bands at the 
shoulder and base. Color pattern of the body 
whorl usually continued on the spire. Interior 
of aperture white or bluish white. In life, foot 
pale brown mottled with darker brown; tip of 
siphon Vermillion, followed proximally by 
white and black bands. 
LENGTH: Usually to 65 mm. A specimen in 
the U. S. National Museum, collected at 
Hilo, Hawaii, measures 82 mm. in length. 
TYPE locality: China. 
REMARKS: Most Specimens found in Hawaii 
agree fairly well with the original description 
and figure, although there is considerable 
morphological variation. 
C. pennaceus is extremely similar to C 
omaria Hwass in Bruguiere. Tryon (1884) and 
some other authors have synonymized the 
two. Kiener (1849-1850: 340) listed character- 
istics by which the two species may be dis- 
tinguished, stating under C. pennaceus, '‘C’est 
avec le Conus omaria que cette espece a le plus 
d ’analogic; le systeme de coloration de ces 
deux coquilles est a peu pres semblable; 
