LUCINID. 2t1 
Lorirxs, Poli, 1791. 
Etym.—Lorum, a strap; pes, a foot. 
Syn.—Lucinidea, d’Orb. Glissocolus, Gabb, 1869. 
Distr.—25 sp. Atlantic, Mediterranean, West Indies. Fossil. 
Kocene—; France. OCret.; California. 2. edentula, Linn. 
(exix, 47). 
Animal with the margin of the mantle notched; incurrent 
tube long. 
Shell almost equilateral, cancellated, or sculptured by flexuous 
striz ; lunule short; cartilage quite internal ; teeth, one cardinal 
in the right, and two in the left valve; laterals remote, and some- 
times indistinct. 
AUSTRIELLA, Tenison-Woods, 1881. A rounded-oval shell, with 
concentric lamelle, covered by a brown epidermis which extends 
over the interior side around the margin, forming a broad band; 
hinge thick, with an inconspicuous arcuate smooth tooth; inte- 
rior surface white with radiating obsolete ribs, not nacreous, 
without pallial sinus. 
A. sordida, Tenison-Woods. Port Denison, Australia, in fresh- 
or brackish-water swamps. This shell was supposed by the 
describer to belong to the family Unionide, and to be closely 
allied to Spatha, but it is evident he is not acquainted with the 
latter genus. Judging from the description and figure it appears 
to me to be a Lucinoid shell, closely allied to if not identical 
with Loripes. 
Crypropon, Turton, 1822. 
Syn.—Axinus, J. Sowerby, 1823. Thysaira, etc., Leach. Be- 
quania, Leach. Ptychina, Philippi, 1836. Thiatyra, G. Sowb. 
Distr.—16 sp. Europe, etc. Fossil, 3 sp. Eocene; United 
States, Europe. C. flexruosus, Montf. (exix, 48). 
Animal with the mantle-margin thickened, open, not prolonged 
into tubes; foot long, subeylindrical, and very slender. 
Shell globular, posterior side furrowed or angulated, umbones 
much recurved ; lunule short or indistinct; ligament usually and 
to a certain extent external, placed in a groove on the hinge-line, 
and outside the hinge-plate ; teeth altogether wanting. 
In C. flexuosus, the hinge-plate is indented in the right valve 
immediately below the beaks, and slightly reflected in the left, 
which gives that valve the appearance of having an indistinct 
or obscure cardinal tooth. 
Puitis, Fischer, 1864. 
Distr.—P. Cumingii, Fischer (exix, 49, 50). Moluccas. 
Shell ovate, higher than long, inflated, thin, finely concentrically 
striated and with a posterior duplicature extending from the 
beaks ; hinge edentulous, lunula small and very deep, forming a 
