526 The American Naturalist. [June, 
23. Black-faced Wood Brocket, Cariacus tema (Rafinesque), Amer. 
Mon. Mag. I, 1817, 44. Mr. Alston, Biol. Cent. Amer., 1879, p. 118, 
declares this animal to be the Cariacus rufinus Boure. & Puch., Rev. et 
Mag. Zool., 1851, p. 561. Reference to the descriptions of Hernandez 
and Rafinesque confirms this view and seems to justify the retention of 
Rafinesque’s specific name as above. 
24. Mountain Sheep, Ovis cervina Desmarest, Nouv. Dict. Hist. 
Nat., 1818, p. 551. Ovis montana Cuvier is preoccupied by Ovis mon 
tana (Goat) Ord. “Ovis montana Geoff.” is a myth. Ovis canadensis 
Shaw, Nat. Misc. XV, pl. 610, is undated. 
25. American Bison, Bison bison (Linnæus), Syst. Nat., 1758, p. 72. 
26. South American Tapir, Tapirus terrestris (Linneus), Syst. Nat., 
1758, p. 74. 
—SamueEL N. RHOADS. 
è 
Zoological News.—Worms.—J. P. Moore describes’ four new 
species of Branchiobdella parasitic upon American erayfishes. These 
differ from all European species in the character of the vasa deferentia. 
Louis Joubin has just published a monograph of the Nemertines 
of France, making an octavo volume of 235 pages, illustrated by four 
pilates. 
Rotifers.—H. S. Jennings points out‘ that the genus Plaosoma of 
Herrick (1885) has, as synonymes, the names Gomphogaster, Gastr 0- 
pus, Gastroschiza, Bipalpus and Dictyoderma. The species which 
Herrick described as P. lenticulare may be the same as Euchlams lyn- 
ceus Ehrenberg ; if not, it is a distinct form. Jennings also states that 
P. hudsoni, of Europe, inhabits Lake St. Clair, as does Hudsonella 
picta. 
_ Mollusca.—P. H. Mason, among other interesting facts states‘ that 
cases of mimicry and of hybridization are unknown among the shells of 
molluses, and that these cannot be invoked as playing any part in the 
evolution of new forms. He would rather believe that the variations 
are to explained as depending upon the relations of the animal to 
shell and of the whole to its surroundings. : 
*Proc. Acad. Nat. Sci., Philadelphia, 1893, 419. 
“Zool. Anzeiger, xvii, p. 55, 1894 
* Jour. Conch., vii, 328. 
