BRaAcHIOPoDA. 875 
broad plications most conspicuous at the margins. Loop proba- 
bly short, with slightly recurved ascending lamelle; jugal pro- 
cesses not united above. 
(It has been shown by Dovvittt that the term Tururaruna, 
though introduced by Lruwyp in 1699, can 
only derive a definite significance from the 
determinations by Krein in 1753. Kuxty’s 
first species is 7. simplex, which is the same 
as the Concha anomia of Cotonna (1676) 
and the last author’s figure which is repro- 
duced by Kuety, and also inserted here, 
represents one of the extensive group of the 
Terebratule biplicate. From Linnk’s de- 
scription of his Anomia terebratula (1758), 
which is also based upon this shell, it is ria. 529 Terebratula eim- 
inferred that the species thereby represented Pe". (Couonna, Kuen, 
is a fossil from the Mesozoic or Tertiary Ee. 
formations, though its geological horizon is not more precisely 
known.) 
Liothyrina, (Ehlert. 1887. 
Synonym ; Liothyris, Douvillé, 1880. 
Shells biconvex, unplicated. Loop short, transverse lamella 
bent upward in the middle; oral process discrete; cardinal 
Fies. 530, 581. Liothyrina vitrea, Born (sp.). (Davipson.) 
- 
process small, hinge-plate divided. Muscular scars restricted to 
the posterior portion of both valves. 
Animal with long, free brachia united at the base by a mem- 
branous expansion. 
: 127 
