Hawaiian Conus — KoHN 
377 
TYPE LOCALITY: None. 
REMARKS: This species is closely related to 
Conus ehraeus and is regarded as a variety of 
that species by some recent workers (e.g. 
Dodge, 1953 ) » It differs from C. ebraeus in 
being generally smaller, having a tuberculate 
surface, and having the black flammules con- 
fluent so as to cover most of the shell The 
two species are sympatric over a wide range. 
Hawaiian specimens are easily distinguish- 
able. In other areas, the two species tend to 
approach each other more closely morpho- 
logically but do not intergrade. Lamarck’s 
(1810) statement that the two species are 
constantly distinct is correct. 
C chaldaeus occurs most commonly near 
the outer edge of marine benches. Pleistocene 
fossils are known from Oahu (Ostergaard, 
1928 ). 
Conus circumactis Iredale 
Figs. 34 and 35 in Plate 2; Fig. 3 
Conus cinctus Swainson, 1822, Zook Ulus., ser. 
1, 2: pL 110. (non cinctus Bose, 1801.) 
Conus pulchellus Swainson, 1822, Zook Ulus., 
ser. 1, 2: pk 114. (non pulchellus Kbdmg, 
1798.) 
Rhizoconus pulchellus (Swainson). Adams 
and Adams, 1853, Gen. Rec. Moll., 1: 252. 
(.^) Conus connectens A. Adams, 1854, Proc, 
Zook Soc. Lond., 1854: 136. 
Conus circumactis 1929, Mem. Queensk 
Mus., 9: 281. 
Conus hammatus Bartsch and Rehder, 1943, 
Proc. Biol. Soc. Wash., 56: 86. 
Dauciconus circumactis (Iredale). Cotton, 
1945 , Rec. South Austral. Mus., 8: 246. 
Conus hammatus Dali, Bartsch and Rehder. 
Greene, 1953, Ann. Rept. Amer. Malacok 
Union, Bulk 20: 28. 
Leptoconus circumactis (Iredale). Kuroda, 
1956 , Venus: Jap. Jour. Mak, 19: 73. 
DESCRIPTION: Shell rather thin; body whorl 
slightly concave near the base on the left side, 
spirally striate with the striae obsolete and 
impressed toward the shoulder but stronger 
and with widely spaced low knobs basally. 
Aperture narrow, widening slightly basally; 
outer lip thin. Shoulder angular, smooth or 
Fig. 3. Conus circumactis Iredale. Specimens dredged by C. A. Allen off southern shore of Oahu, 8-60 fathoms 
Left, 21 X 12 mm.; center, 25 X 13 mm.; right, 34 X 18 mm. Photographs by M. Miyamoto. 
