88 
BULLETIN 125, UNITED STATES NATIONAL MUSEUM. 
This species lives mainly in the temperate and frigid regions and does not 
approach the Tropics. Its presence in the Miocene at Cove Point, Maryland, where 
it was described as Lepralia marylandica by Ulrich and Bassler, is very remarkable 
and would indicate the existence of a very cold boreal current. 
Occurt'ence. —Miocene (St. Mary’s formation): Cove Point, Maryland (rare). 
Geological distribution. —Pliocene and Quaternary of Austria-Hungary (Busk, 
Bell) and of Italy (Seguenza). 
Habitat. —Arctic Ocean: Jean Mayen (140-180 meters), Franz Joseph Land 
(210 meters); Sea of Kara; North Sea; Norway; Germany; Denmark (9-25 meters). 
Eastern Atlantic off England in the English Channel, in the Gulf of Gascony. 
Mediterranean (57-77 meters) and Adriatic. Madeira Islands. Western Atlantic 
from the St. Laurence to the Woods Hole Region. 
Plesiotype. —Cat. No. 68519, U.S.N.M. (Holotype of Lepralia marylandica 
Ulrich and Bassler.) 
CRIBRILINA LIGULATA, new species. 
Plate 15, fig. 14. 
Description. —The zoarium is encrusting a Pecten. The zooecia are distinct, 
separated by a deep furrow, elongated, regularly elliptical; the frontal is convex 
and bears 15 narrow, little salient costules; the lacunae are rectangular and larger 
on the margin than on the median zooecial axis. The apertura is large, tranverse, 
semilunar but with a concave proximal border; the peristome is wide, smooth, little 
salient; it bears four spines which can be transformed into two or three tongues 
by coalescence. The ancestrula is membraniporoid. 
nr . . [7ia = 0.10mm. 
Measurements. —Apertura ^ 
Zooecia 
Lz = 0.50 mm. 
mm. I Iz — 0.30-0.32 mm. 
Affinities. —In its exterior aspect this species much resembles Lepralia man- 
zonii Reuss, 1874, from the Tortonian of Austria-Hungary, but it differs in the pres¬ 
ence of its liguliform spines. Normally there are only four large spines, but they 
become thickened easily and joined together to form two or three very salient 
tonguelike plates. 
Occurrence. —Miocene (Calvert formation): 1 mile south of Parkers Creek, 
Calvert County, Maryland (very rare). 
Holotype.— Cat. No. 68520, U.S.N.M. 
CRIBRILINA CUSPIDATA, new species. 
Plate 15, fig. 15. 
Description. —The zoarium incrusts shells. The zooecia are distinct, separated 
by a deep furrow, large, elongate; the frontal is very convex; it is surrounded by 
a line of small lacunae and ornamented with 5 or 6 large lacunae in the form of a 
crescent. The lumen is not visible. The apertura is semilunar; the anter is very 
large and the poster is concave. The ovicell is hyperstomial. Between the zoo¬ 
ecia are large triangular avicularia in the form of the bead of a lance; the beak is 
rounded and turned toward the top. 
Measurements. —Apertura 
ba = 0.17 mm. 
la = 0.20 mm. 
Zooecia 
Lz = 0.85 mm. 
Iz = 0.35 — 0.50 mm. 
