168 U.S. NATIONAL MUSEUM BULLETIN 23 4 



carinal knobs are deep brown, and each angle of the keel may be 

 brownish with white between. The general color of the shells is 

 whitish. 



Type. — Not traced. 



Type locality. — Not known. 



DiSTKiBUTioN. — Cosmopolitan in warm and temperate seas. 

 (Recorded from the Philippines by Hidalgo and Robson.) 



Argonauta nodosa Solander, 1786 



Argonauta nodosa Solander, 1786, p. 96. — de Elera, 1896, p. 3. — Hidalgo, 1905, 

 p. 9 (as tuber culata) . 



No material of this species has been available for comparison. 

 The records from the Philippines are by de Elera (from Boac) and 

 Hidalgo (from Mindanao). The species is listed here for complete- 

 ness; for a description the reader is referred to Robson (1932b, p. 198). 



Type. — Not traced. 



Distribution. — Tasmania, New Zealand, northern Australia (all 

 Robson) ; Mozambique, Cape of Good Hope (d'Orbigny) ; Moluccas 

 (Rumphius) ; South Australia (Verco and Cotton) ; Chile (Gray) ; 

 (?)Brazil (Robson); Philippines (Hidalgo, de Elera). 



Argonauta bottgeri Maltzan, 1881 



Argonauta bottgeri Maltzan, 1881, p. 163. — Hidalgo, 1905, p. 9. — Robson, 1932b, 

 p. 195. 



No specimens of this species were found in the collections. Hidalgo's 

 record from Masbate, quoted from Cuming, is doubtful. Robson 

 had three specimens from Masbate, however, apparently from the 

 same source. Inasmuch as no specimens of this species have been 

 seen and Robson (1932ab, p. 195) considers the possibihty that 

 bottgeri is a form of hians, I do not feel that a description based upon 

 the literature is warranted. 



Type. — Not traced. 



Type locality. — Not traced. 



Distribution. — Austraha; Albay, Luzon, and Masbate, PhiHp- 

 pines; Mauritius; China Seas; Chagos Id.; between Honolulu and 

 Laysan Id., on surface (Berry); New Zealand (Massy); Japan 

 (Denker, Sasaki, Ikeda); Andaman Id. (Massy). 



