128 MR. W. WEST OK THE FRESHWATER 



Caragh; Lower Lake of Killarney ; Cloonee Lough ; Glengarriff; 

 Carrantuohill. 



10. Pehtum Je^eri, Rolfs. {Brit. Desm. p. 153, tab. 33. 

 fig. 2.) 



I. Lakes near Recess. 



11. P. OBLONGUM, De Bary. (Rabh. FI. Fur op. Alg. iii. 

 p. 119.) 



11. Carrantuohill. 



12. P. trtjncatuat, Ralfs. {Brit. Desm. p. 152, tab. 25. fig. 5.) 

 Long. 42 /a ; lat. 12'5 fi. 



I. Near Oughterard; Moher Lough. — II. Carrantuohill; 



Glengarriff ; Lower Lake of Killarney ; Castletown. 



Forma punctata, West. {Additions Fresliw. Alg. W. Torks., 

 in Naturalist, Aug. 1891, p. 245.) 



I. Clifden. 



13. P. polymorphum, Perty. {Lund, Desm. Suec. p. 86, 

 tab. 5. fig. 10.) 



I. Clifden. — II. Carrantuohill; 8 m. S. of Kenmare. 



fl4. P. adelochondrtjm, Flfv. {Anteck. am Finska Desmi- 

 dieer.). (PI. XIX. fig. 19.) 

 Long. 45 fi ; lat. 165 fi. 



II. Cromagloun. 



15. P. Mooreantjm, Arch. {Cooke, Brit. Desm. p. 44.) 

 Long. 20 ju; lat. 7'5-8/x; long, zygosp. 22*5 /x; lat. zygosp. 

 17*5 fi ; crass, zygosp. 15 fi. 



I. Near Oughterard. — II. Carrantuohill. 



tfl6. P. suboctangulare, nov. sp. (PI. XXIV. fig. 20.) 



P. minutum, circiter l|plo longius quam latius, oblongo- 

 ellipticum, apicibus late rotundatis, membrana glabra et achroa ; 

 zygospore quadratae oblongseve angulis truncatis subretusisque, e 

 vertice et e latere visae ellipticse, membrana eras sa et rufescente. 



Long. 14-16 fi ; lat. 10 fi ; long, zygosp. 25-28 fi ; lat. zygosp. 

 20-25 fi ; crass, zygosp. 18 /x. 



II. Lower Lake of Killarney. 



17. P. cucurbitinum, Bus. (Jburn. Roy. Micr. Soc. 1884, 

 p. 197, tab. 5. fig. 7.) 



