58 Moll. 
VII. MOLLUSCA. 
TE TRA BRA NCHIA TA . 
t Germanonautilus, n. gen., type Nautilus bidorsatus , Trias, Austria ; 
Mojsisovics, Abh. geol. Reichsanst. vi, Abth. 1, p. 235. 
\Gonionautilus , n. gen., type Nautilus securis , Trias, Austria; Mojsisovics, 
t. c. p. 207. 
t Gryphonautilus, n. subgen. of Gryphoceras for Nautilus galeatus and 
others, Trias, Austria ; Mojsisovics, t. c. p. 227. 
f Holconautilus, n. subgen. of PI euronautilus for Nautilus ramsaueri and 
others, Trias, Austria ; Mojsisovics, t. c. p. 238. 
t Indonautilus, n. gen., type 1. kraffti , Trias, Austria ; Mojsisovics, t. c. 
p. 205. 
■\Juvavionautilus , n. gen. for Nautilus heterophyllus and others, Trias, 
Austria ; Mojsisovics, t. c. p. 222. 
Nautilus , anatomy and life-history ; Willey, Zool. Results vi, pp. 691-826, 
figg. : Section of the shell ; Benard (38) : N. pompilius , anatomy ; 
Griffin (208). 
t Oxynautilus, n. subgen. of Juvavionautilus , type Nautilus acutus, Trias, 
Austria; Mojsisovics, Abh. geol. Reichsanst. vi, Abth. 1, p. 223. 
t Paranautihis, n. gen., type Nautilus simony i, Trias, Austria ; Mojsisovics, 
t. c. p. 205. 
t Proclydonautilus, n. subgen. of Clydonautilus , type Nautilus noricus , 
Trias, Austria; Mojsisovics, t. c. p. 207. 
kStyrionautilus , n. gen., type Nautilus syriacus, Trias, Austria; Mojsiso¬ 
vics, t. c. p. 206. 
t Springonautilus, n. gen., type Nautilus bullatus, Trias, Austria; Mojsiso¬ 
vics, t. c. p. 220. 
t Tainionautilus, n. gen. for Nautilus transitorius and others, Trias, Austria; 
Mojsisovics, t. c. p. 232. 
\Thurinqionautilus, n. gen., type Nautilus juqatonodosus, Trias, Austria; 
Mojsisovics, t. c. p. 236. 
t Tirolonautilus, n. gen. for T. seledinus and others, Trias, Austria; 
Mojsisovics, t. c. p. 233. 
t Trachynautilus, n. subgen. of Pleuronautilus for Nautilus subgemmatns 
and others, Trias, Austria; Mojsisovics, t. c. p. 239. 
II. GASTROPODA. 
Sections of the Gastropod shell; Benard (38). 
On the protoconch in the Gastropods; Grabau (200). 
Gastropoda, account continued by Simroth in Bronn (58). 
General notes; Simroth (485). 
PULMONATA. 
Pulmonata, anatomy of many forms; Pelseneer (395). 
STYLOMMATOPHORA. 
Testacellida: arid Selenitiibe. 
Circinaria ponsonbyi , Colombia; Pilsbry & Clapp, Nautilus xv, p. 134, 
hg.: n. sp. 
Ennea afectata, Zanzibar; Fulton, P. Malac. Soc. London v, p. 32, fig.: 
E. premnodes , South Africa; Sturany, Ann. Hofmus. Wien xvi, 
