N@2Z2 NODULARIA 
NoODULARIA EURYSSELLINA (“‘Letourneux” Pallary). 
y 
“This form, which belongs to the group of niloticus, is an 
unpublished species, which we found in the album of the 
Naiades of the Bourguignat collection drawn by M. Locard, 
The type came from the canal Mahmoudich in Lower Egypt. 
Our specimens have thin valves, of a beautiful clear rose-color, 
covered with a greenish epidermis. 
Length 25, height 23, diam. 15 mm.” (Pallary). 
Unio eurysellinus “LeTOURNEUX” PALLARY, Bull. Inst. Egypt, 
Ti 2002; "p04; ple 11 hee at: 
Nodularia (Celatura) eur'ssellina PAttARY, Mem. Inst. Egypt, 
VI, 1900, p. 78. 
NopvuLARIA Mystica (“Bourguignat” Pallary). 
“We do not find any difference between the specimens from 
the Upper Nile and those from a canal near Suez, named Unio 
mysticus in the collection Bourguignat. ‘This species, like a 
large number of the important series that Bourguignat pro- 
posed to publish in an “Histoire Malacologique de l’Egypt,” 
is yet unpublished. It is to the courtesy of M. Arnould Lo- 
card that we owe our knowledge of this series, which we pro- 
pose to publish in the near future. 
Length 40, height 23, diam. 14.5 mm.” (Pallary). 
Unio mysticus “BouRGUIGNAT”’ PALLARY, Bull. Inst. Egypt, 
A , 1902; :p945 play fiss3: 
Nodularia (Celatura) mystica PAtsAry, Mem. Inst. Egypt, 
Vil, TOOOs ps 7S: 
NODULARIA GERRARDI (von Martens). 
Shell elliptical, inflated, subsolid, inequilateral; beaks full 
and high, the umbonal region somewhat elongated, sculptured 
with V-shaped ridges; hinge line curved; anterior end round- 
ed, base lightly curved, a little fuller behind the middle; pos- 
terior ridge widely rounded, ending in a blunt point about on 
the median line; epidermis dark brown; pseudocardinals rath- 
er small, compressed; laterals curved; nacre rose-colored or 
bluish. 
Length 51, height 30.5, diam. 26.5 mm. 
Lake Tanganyika. 
