KONGL. SV. VKT. AKADlOiMIKNS HANDfJNOAR. BAND 26. N:(J 2. 175 



Cyiiibdla helvetica is a very comiuon species, easily recognized by its straiglit terminal 

 fissures. Under the name Eiici/niioiui Gerstenbergeri Grunow has described (Banka I), p. U PI. I 

 f. 11; 186;")) a form, remarkable for the terminations of the median line, which are unusually distant 

 from the euds of the valve. I have seen from various localities several specimens closely agreeing 

 with the figure pul)lished by (tRUNOW, and I have conviuced myself that these are abnormal forms 

 of C. helvetica. 



* C. hevesensis Pant. (1889). — V. boat-shaped, with obtuse ends. L. 0,062; B. 0,013 mm. 

 Median line heut; its central pores very distant. Axial area narrow, slightly dilated around the 

 central nodule. Stria^ 11, li to 13, .^i in 0,01 mm. slightly radiate, punctate. — Pant. II p. 40 



PI. Ill f. r);5. 



Brackish water: Hungary, fossil (Pant.). 



This species is unknown to me. The fig. and description given by Pantocsek are insufficient 

 for deciding as to its i-elations to other boat-shaped Cymbelhu. 



* r. Chyzerii Pant. (1889). — V. boat-shaped, with the ventral margin slightly gibbous in 

 the middle. Ends subrostrate, obtuse. L. 0,o82.5; B. 0,oi4o mm. Median line arcuate, its central 

 pores approximate. Axial area narrow, not dilated in the middle. Stri;e 10 to 12, .^i in (),oi mm. 

 Ventral strict crossed by »a black line»(?) — Pant. II p. 40 PI. XI f. 194. 



Brackish water: Hungary, fossil (Pant.). 



This species is unknown to me. The description and the figure given by Pantocsek are 

 insufficient for ascertaining its relations to other boat-shaped Cymbelht. It may come near to 

 C helvetica, C. lanceolata, (J. cymhiformis. 



59. €. aspera Eiib. (1840). — V. boat-shaped, with strongly arcuate dorsal margin and 

 straight, centrally gibbous ventral margin. Ends obtuse, rounded. L. 0,i.-, to 0,i8; B. 0,033 mm. 

 Median line arcuate. Axial area linear, slightly dilated in the middle. Striae 7 to 9 in 0,oi mm. 

 slightly radiate, punctate; puncta 12 to 15 in (),oi mm. No row of isolated puncta on the ventral 

 side. — Coccon. asperum Ehb. Ber. 1840 M. Gr. V: 1 f. 1 etc. Petit Journ. de Mierogr. 1878 Mai's et 

 Avril f. 3. HiiiRiB. D. d'Auvergne PL III f. 10. Cy. lanceol. rar. aspera Brun D. des Alpes p. 57 

 PI. IX f. K;? Cy. qastroides KtJTZ. Bac. p. 79 PI. VI f. 4 fc (1844). A. S. Atl. IX f. 1, 2; X f. 7. 

 V. H. Syn. p. (53 PL II f. 8. Grun. Franz Josephs Land I), p. 97 (45) PL I f. 7. C. epgantea Pant. 

 Ill PL XXI f. 321 (1893)? 



Fresh water: Franz Josephs Land (Grun.), Iceland! Norway (Dovre, Laurgaard)! Sweden 

 (Lapland to Skane)! Finland! France! Britain! Belgium! Germany! Switzerland! Savoy! Italy! 

 Japan! New Zealand! 



Var. minor V. H. (1880). — Smaller, with strongly arcuate median line. L. 0,07 to 0,o8 

 mm. — Cy. gastr. forma minor V. H. Syn. p. 63 PL II f. 9. 



Var. neogena Grun. (1882). — L. 0,17.'); B. 0,o33 mm. Stritt about 8 in O.oi mm., 12inO,oi 

 mm. towards the ends, punctate; puncta about 14 in 0,oi mm. — Cy. gastroidcs var. neogena Grun. 

 Foss. D. Oster. Ung. p. 141. 



Fresh water: Hungary, fossil (Grun.). 



Var. (hihravieensis Grun. (1882). — L. 0, igs; B. 0,027 mm. Terminal nodules very strong, 

 at some distance fi'om the ends, sitrrounded by short strite. Strife 6 to 9 in 0,oi mm.; their 

 puncta 14 to 17 in 0,oi mm. — Cy. gastr. rar. diittr. Grun. Foss. I). Oster. Ung. p. 141 PL XXIX 

 f. 30. Pant. Ill PL XVII f. 251. 



Fresh water: Hungary, fossil (Grun.). 



Var.? erassa Grun. (1882). — V. short and broad with rounded obtuse ends. L. 0,073; 

 B. 0,0 2 4 mm. Median line strongly arcuate. Axial area narrow. Stria; 6 or 7 (middle) to 9 

 (ends) in 0,01 mm. punctate; pimcta 16 to 17 in 0,oi mm. The stria? are on the ventral side 

 cros.sed by a short depression. — Grun. Foss. D. Oster. Ung. PL XXIX f. 28. 



Fresh water: Hungary, fossil ((xrun.). 



