328 FRESHWATER ALG^ OF LISMORE DISTRICT, 



Alg., p. 21, T.3, f.35, but form more regular, base flatter, serai- 

 cells more adpressed, apex flattened, fewer granules (spines in 

 his form). Cf. also Bernard, Protococc. et Desm., p. 11 3, f. 175, 

 and f. javanica Gutw., Alg. in Java coll., p. 5 9 6, PL 38, f.45( == Cos. 

 spec, Mobius, Austral. Siissw. Alg., ii., p. 340, T. ii., f.20; long. 

 110, lat. 94, isbh. 43 ju,), which is broader in proportion. 



Cos, Blyttii var. Lismorense, n.var. (PI. xlii., f.7.) 



Semicellulse fere rectangulares: apicibus productis, truncatis 

 4 granulatis; lateribus e basi plana verticalibus, parallelis, 4 

 granulatis, infra marginem granulis paucis ; angulis basalibus 

 superioribusque fere rectis ; a vertice visse, ellipticse, papillis 

 nullis. 



Long. 1 7, lat. 16, ap. 8, isth. 4 /x. 



Lismore(185). 



The body of the semicell is transversely rectangular, the apex 

 suddenly produced above, with a marked hollow on each side 

 between it and the upper angles, sides of semicell almost vertical, 

 basal and upper angles almost square, just rounded off; sides 

 and apex 4-granulate, with inner series as in the type. No 

 papilla above isthmus. 



CosMAuiUM WooDLAWNENSE, n.sp. (PL xliL, f.8.) 



Semicellulse subtriangulares: basi plana (sinu lineari extrorsum 

 ampliato); angulis basalibus rotundatis; lateribus levissime arcu- 

 atis, 5-6 crenulatis, ad apices rapide cunvergentibus; apicibus 

 angustis, levissime deplanatis, 4 crenulatis, Membrana hyalina, 

 infra marginem serie granulorum, inter apicem et inter mediani 

 semicellulam papillis 3 in triangulo dispositis, ornata. A vertice 

 anguste-oblongse, granulis minutis in seriebus transversis ornatse; 

 apicibus late-rotundatis; lateribus arcuatis; utrinque in medio 

 papillis 3. 



Long. 32, lat. 34, ap. 10, isth. lOfx. 



Woodlawn, river. 



The semicells are triangular, with flat base, and slightly de- 

 pressed narrow apex. Across the sides, run 5-6 rows of minute 

 granules, the margins and apex crenulate. Three large papillae 

 in a triangle between the apex and the middle of the semicell. 



