BRraAcHIopopDA. 805 
the slope of the cones, which are somewhat appressed laterally, is 
essentially that of the lateral slopes of the pedicle-valve. The 
character of the jugum has not been ascertained. The muscular 
impressions consist of four distinct adductor scars which are 
separated medially by a low, thin ridge. : 
Surface of both valves covered by a few coarse plications, con- 
tinuous from the umbones to the margins. Of these there are 
four or five on the lateral slopes. On the pedicle-valve the 
median pair is the strongest, and forms a sort of double fold 
with a low sinus between them. On the brachial valve there is a 
corresponding low median sinus, which contains a simple or 
double plication. The exterior is covered with fine elevated 
radiating lines which are usually interrupted to form radiating 
rows of elongate, lachrymiform pustules. 
Shell substance fibrous, impunctate. ce 
Type, Vitulina pustulosa, Hall. 
Distribution. Lower and Middle Devonian (New York, Brazil, 
Bolivia, South Africa). 
Anabaia, Clarke. 1893. 
Shell allied to Leprocata in the structure of its cardinal pro- 
cess and articulating apparatus, having, however, a highly convex 
brachial valve with a median septum extending one-half its 
Fia, 376. Fia. 377. Fia. 378. .Fia. 379. 
Figs. 376-379.— Anabaia Paraia, Clarke. 
Fig. 376.— Exterior, showing the brachial valve. 
Fig. 377.— Profile of a smewhat compressed specimen. 
Fig. 378.— Interior of the brachial valve; showing the cardinal process, crura, dental sockets 
and septum. 
Fig. 379.— Internal cast of portion of the pedicle-valve; showing the muscular scars. 
length, two short, abruptly ending plications on the low median 
fold, upturned anterior margins, and explanate cardinal extremities. 
Type, Anabaia Paraia, Clarke. 
Distribution. Upper Silurian (Amazonas). 
57 
