O’Mrarna—Report on the Irish Diatomacee. 397 
Var. forficula, (O’Meara). Marine. 
Valve elliptical, median compartment as in the typical species ; 
compartments at either side very much narrower; marginal striate 
band wide, projecting towards the central nodule; inner margin bilu- 
nate; strie radiate, costate, with obscure moniliform striz interposed, 
the cost only penetrating the contiguous compartment; length 
"0023, breadth -0014. (Plate 33, fig. 16.) 
Schmidt, Atlas der Diat., T. viii., fig. 3.—DPinnularia forficula, 
@? Meara; ‘Qj. Jc: M.'8.,,1867,:p. 117,+Bl. ws, fig... 9: 
Arran Islands, Co. Galway. 
Var. parva, (Schmidt). Marine. 
Valve linear, elliptical; median compartment narrow, inflexed at 
the ends, shghtly constricted in the middle; compartment at either 
side very narrow, bilunate; marginal striate band broad, bilunate on 
the inner margin; strie fine, linear, nearly parallel throughout; 
length -0014, breadth -0008. 
Schmidt, Atlas der Diat., T. viii., figs. 1 and 2. 
Stomachs of Ascidians, Broadhaven Bay, Co. Galway. 
Navicula coffecformis, (Schmidt). Marine. 
Valve small, broadly elliptical; median compartment narrow, in- 
flexed at the ends, slightly constricted in the middle; compartments 
on either side narrow ; median striate band relatively wide; strie fine, 
linear, slightly radiate; length °0010, breadth -0005. (Plate 33, 
fig. 18.) 
Schmidt, Atlas der Diat., T. vii., fig. 7. 
Arran Islands, Co. Galway. 
1 1 Valve constricted to the middle. 
Yavicula eudoxia, (Schmidt). Marine. 
Valve elliptical, slightly constricted, ends broadly rounded ; median 
compartment narrow, inflexed at the ends, slightly constricted in the 
middle; compartments at either side narrow, striate; strie linear, 
nearly parallel and very faint; marginal striate band narrow; strix 
linear, slightly convergent in the middle, slightly radiate towards 
the ends; length -0016, breadth at the constriction :0007, greatest 
breadth -0008. (Plate 33, fig. 19.) 
Schmidt, Atlas der Diat., T. viii., fig. 19. 
Stomachs of Ascidians, Broadhaven Bay, Co. Galway. 
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