UNIO 549 
brown or black at the extremities and beaks; pseudocardinals 
thick, subtriangular; laterals strong, short and curved; nacre 
white, rose-colored in the cavities. 
Length 50, height 31, diam. 22 mm. 
Lakes Tiberias and Antioch. 
Unio zabulonicus Locarp, Arch. Mus. Lyon, II], 1883, p. 220, 
pl. xxu, figs. r1-18—Simrson, Syn., 1900, p. 689.—Kosexr, 
lcon;, new ed, X VIN, roT2, p..57, pl. pvirt, fig, 2675. 
Unio antiochianus Locarp, Arch. Mus. Lyon, III, 1883, p. 
240, pl. Xx, figs. 14-16. 
This seems to differ from allied species in being more rhom- 
hoidal, in its brilliant epidermis, and the peculiar color, yellow- 
ish in the middle of the shell and dark at the beaks and ex- 
tremities. I cannot see the slightest reason why Locard should 
separate the form from I,ake Antioch under another name— 
the only difference which seems to exist between them being 
that sabulonicus is a little larger. 
UNIO TERMINALIS Bourguignat. 
Shell beautifully and almost exactly long elliptical, subin- 
flated, subsolid, somewhat wedge-shaped when viewed from 
above ; beaks full and somewhat elevated above the hinge line, 
their sculpture apparently a few fine, uneven corrugations ; 
posterior ridge well developed but not elevated, rounded or 
feebly biangulate, placed near the dorsal line and ending be- 
hind near the median line; surface delicately concentrically 
striate ; the posterior slope plicately wrinkled: epidermis pale 
yellowish-green, sometimes with one or two darker rays on 
the dorsal slope; left valve with two compressed pseudocardi- 
nals, which are often united and two delicate laterals; right 
valve with one pseudocardinal and one lateral: nacre bluish- 
white, subshining. 
Length 50, height 28, diam. 19 mm. 
Length 52, height 29, diam. 22 mm. 
Length 54, height 27, diam. 22 mn. 
T.ake Tiberias. 
