BIHANG TILL K. SV. VET.-AKAU. IIANDL. BAND 21. AVD. 111. N:0 2. 19 



ventral than on tlie dorsal side. Ötriae 10 to 11 in 0,oi inra., 

 distinctly punctate, puneta about 20 in 0,oi mm. 



Kv. 26, Nu. 41. — Rare. 



I think this almost symmetrical and non-rostrate form 

 must be considered as a variety of C. lieteropleura. 



C. (Encyoiiema) turgrida Grég. — V. H. III, 12. 

 Kv. 20. — Rare. 



C. (Encyoiiema) veutricosa KlJTZ. — V. H. III, 15. 



Kv. 1, i», 32, 34, Nu. 5, 17, 18, 25, Jm. 6, 31, Ks. 15, 20, 

 V. 12, S.-K. 7, Km. 10, 30, Ll. 21, Na. 35, Gl. 47, Ke. 49, 

 Vi. 50. — Very freqiient. 



Var. caispitosa KiiTZ. — V. H. III, 14. 



Kv. 26, Tr. 38, Ke. 49. — Rare. 



This variable species in its larger forms mueh resembles 

 C. turg-ida flRÉft. and passes över completely to that species. 

 Sueli a transitional form. O, o 5 mm. in lengtli, occurs in Ks. 15. 



C. (Encyoiiema) hebridica Grun. — Cl. Finl. pl. II, 16, 17. 

 Jm. 6. — Rare. 



C. (Eucyonema) ^racilis Rabh. — A. S. X, 39, 40, V. H. III, 20, 21. 



Jm. 31. — Rare. 



Var. lunata AV. Sm. - V. H. III, 23. 



Kv. 1, 9, 2S, 32, Nu. 5. 14, 17, 19, 25, 37, Jm. 6, 31, 

 Na. 35, Tj. 42. — Frequent. 



C. (Eucyonema) norveg-ica Grun. — A. S. X, 38, 41. 



Kv. 16, S.-K. 7, Jm. 31, Km. 10, Ke. 49. — Somewhat rare. 



C. incerta var. nayiculacea Grun. — Cl. c^ Gr. A. D. XVI, 11. 



Kv. 16, 26, Nu. 2, 5, 19, 25, Jm. 6, 31, Km. 10, 30, Tj. 42, 

 Gl. 43. — Frequent. 



C. sequalis W. Sm. — A. S. IX. 41—45, C. obtusa Grég., 

 C. subaequalis Grun. 

 Kv. 16, Jm. 6, Kk. 48, Ke. 49. — Rather rare. 



C. siniiata GrÉG. — V. H. III, 8. 

 Km. 30, Ke. 49. — Rare. 



C. perpusilla A. Cl. n. sp. — Pl. I, 13. 



Valve very small, 0,ui7 mm. in length, O.oos mm. in 

 breadtb, sligbtly cymbiform, lanceolate, with obtuse, sliglitly 



