162 



MR. W. WEST ON THE FRESHWATER 



Long. 



Joshua (examples from Nora Scotia) 

 Turner (examples from Nova Scotia) 

 West (examples from Massachusetts) 



55// 

 47-50 ii 

 41-45 ^ 



Lat. 



Lat. isthm. 



30-33/t 



26-27 /i 

 20-25 /x 



9*9 



P 



17-19 fi 

 14-20 /i 



f97. Cosmarittm arctotjm, JVbrd. (Desm. Arct. p. 28, tab. 7. 

 fig. 22.) 



ffPorma minor. (PL XXIV. fig. 24.) 

 Long. 12 - 5 fi ; lat. 10 /u ; lat. isthm. 8*5 /x ; crass. 7*5 ju. 

 I. Ballynahinch. 



98. C. psetjdarctoum, Nord. in Nord. Sf Wittr., Alg. Bxsicc. 

 no. 257. 



I. Ballynahinch. — II. Carrantuohill ; near Lough Brin. 



99. C. cucuRBiTA, Breb. (Ralfs, Brit. Desm. p. 108, tab. 17. 



fig. 7.) 



I. Creggan Lough ; Kylemore ; Ballynahinch ; Roundstone ; 

 Oorid Lough ; near Oughterard. — II. Cromagloun ; Tore Mt. ; 

 Lower Lake of Killarney ; 

 Lough Brin. 



Carrantuohill; Adrigole ; near 



ttForma major. (PL XXIV. fig. 25.) 

 Long. 60 fx ; lat. 30 /j ; lat. isthm. 25 fi. 

 I. Ballynahinch. 



100. C. PALAtfGULA, Breb. (Rabh. FI. 



Burop. Alg. iii- p. 174 ; 



Cooke, Bint. Desm. p. 125, tab. 44. fig. 9.) 

 II. Lower Lake of Killarney ; 



Glen Caragh. 



Var. De-Baryi, Rabh. (FI- Burop. Alg. iii. p. 175.) 

 Long. 46 /x ; lat. 22 fi. 

 I. Clifden ; Ballynahinch. 



ttlOl. C. obcuneattjm, nov. sp. (PL XXI. fig. 18.) 



C. parvum, circiter 3plo longius quam latius, medio leviter 

 constrictum ; semicellulae oblongo-pyramidatse, truncatae et sub- 

 retusse ad apicem; a vertice conspectae circulares; membrana 

 irregular iter punctata. 



