MOLLUSCA. 
62 Moll. 
Shell-work of American tribes discussed and compared with that of 
other countries ; Buck land. 
Necklaces of shells of various species were found round skeletons in 
the caves of Baouss6, Rouss6, and Cro Magnon ; Cartailiiac. 
Cyrena shell used for severing the umbilical cord ; Man. 
Busycon perversum , Natica and Marginella found in graves to which 
they must have been conveyed overland 1,500 miles ; Bell. 
CEPHALOPODA. 
A catalogue of all recent species of Cephalopoda (388 species, G8 genera) 
is given by Hoyle (1 & 4) ; the following classification is adopted : — 
I. — DIBRANCHIATA. 
i. Octopoda. 
(a.) Lioglossa, fam. Pteroti. 
(5.) Trachyglossa, fams. Amphitretidce, n., Argonautidce, Philo- 
nexidce t A Uoposulce, Octopodidce. 
ii. Decapoda. 
(a.) Myopsida , fams. Sepiolini Sepiarii } Loliginei. 
(5.) (Egopsida, fams. Ommaslrephini (sub. ff. Ommastrephid(e } 
Mastigoteutlndce ), Onychii (sub. ff. Onychoteuthidcv , 
Gonatidce), Taonoteuthi , Cranchiceformes. 
III. — TETRABBANCHIATA. 
Fam. Nautilidce. 
Divided as regards their distribution into (1) Pelagic, (2) Littoral, (3) 
Abyssal, and lists of all recent species given arranged in 17 regions ; 
id. (1) pp. 211-224. . 
Natural history, taken mainly from Verrill ; Ingersoll, (1) pp. 687-693. 
OGTOPODA. 
PTEROTr. 
StauroteuthiSy Vll., almost certainly = Cirroteuthis, Hoyle (1), p. 60. 
AMPHiTRETiDiE (n. fam). 
For Amphitretus pelagicus, id. t. c. p. 67. 
Argonautid^j. 
Argonauta sp., on the Gulf weed ; Benedict. A. lulleri ) n. sp., New 
Zealand, Kirk. 
Ocythoe tuberculatd t Raf., is adopted (following Steenstrup) for the 
species known as Octopus ( Philonexis ) catenulatus , 0. carena and Parasira 
catenulata, id. t. c. p. 5. 
