KONOL. SV. VKT. AKADEMIKNS IIANDLINGAH. HANI) 26. N:f) 2. 177 



mm. a little closer towards the ends, wliere they are strongly radiate, distinctly punctate; puncta 

 15 in 0,0 1 mm. 



Fresh water: Oregon, fossil! 



60. ('. mexicana Ehb. (1844). — V. Innate with rounded truncate ends. L. 0,o9 to 0,i4; 

 B. 0,0^6 to 0,0 3 6 mm. Median line bent, with reflexed terminal fissures. Axial area narrow 

 linear, central small, orbicixlar. Stigma in the middle of the central nodule, without distinct fissure. 

 Stinte 7 (middle) to 9 (ends) in 0,oi mm. radiate in the middle and alternately longer and shorter, 

 neaidy parallel at the ends, coarsely punctate. Puncta 12 to 13 in 0,oi mm. — Coccon. mexicanum 

 EHB.'Ber. 1844 p. 342. A. S. Atl. X f. 32, 33; LXXI f. 82. Cymh. kamfschatica Grun. in A. S. 

 Atl. X f. 31. 



Fresh water: Washington Territory! Vancouver Island! Mexico, C'aliforna and Guatemala 

 fossil ! Kamtschatka ! 



There is, so far I can see, no other diflPerence between C. mexicana and C. kamfschatica 

 than tliat the latter is somewhat smaller and has rather closer striae and puncta. 



64. C. Jailischii A. S. (1881). — V. lunate, with rounded ends. L. 0,2; B. 0,o.t mm. 

 Median line arcuate, with strong terminal nodules and reflexed terminal fissures. Axial area 

 narrow, linear, slightly dilated around the central nodule. Stigma in the middle of the central 

 nodule, without distinct fissure. Striae 8 to 9 in 0,oi mm., in the middle radiate and of ixnequal 

 length, towards the ends almost transverse, distinctly punctate; puncta 10 to 12 in 0,oi mm. — 

 Cocc. Jan. A. S. Atl. LXXI f. 81. 



Fresh water: Pitt River, Oregon ((Trove Coll.)! San Francisco (Atl.). 



Additional. 



C. conifera Brfn (1893). — V. slightly asymmetrical, with arcuate dorsal and gibbous 

 ventral margin. Ends apiculate. L. 0,04 to 0,o5; B. O.oia to 0,oi8 mm. Median line slightly 

 arcuate, somewhat excentric. Axial area narrow, linear, not dilated around the central nodule. 

 Striae 9 to 10 in 0,oi mm., slightly radiate throughout, coarselj' punctate; puncta 20 in 0,ui mm. 

 — H6RIB. D. d'Auvergne p. 220 PI. VI f. 7. 



Fresh water: Cantal, fos.sil! 



Specie^; not descrihed and too imperfectly figured to he admitted in the above monograph. 



C. affinis Pant. Ill PI. TV f 52. 



C. austriaca var. fossiUs Pant. Ill PI. VIII f. 133. 



— — var. latestriata Pant. Ill PI. I f. 9. 

 C Budayiana Pant. Ill PI. XV f. 233 (C. Ehrenbergii var.?). 



_ _ far. gracilior Pant. Ill PI. XXIV f. 363. 

 C. capitata Pant. Ill PI. X f. 160. 



C. Cisttda var. hnnyariea Pant. Ill PI. Ill f 40 (C. helvetica?). 

 C. dementis Pant. "in PI. XX f. 303 (C. Cistula var.?). 

 C. cymhiformis Pant. Ill PI. X f. 174. 



_ _ var. producfa Pant. Ill PL XXIII f. 346. 

 C. Grunovii Pant. IH PI. XIX f. 283 (C. Cistula var.?). 

 C. helvetica var. fossilis Pant. Ill PI. IX f. 158. 

 C. inflata Pant. Ill PI. VI f. 95. 

 C. Jimhoi Pant. Ill PI. VIII f. 130 (C. Cistula?). 

 C. Kockii Pant. Ill PI. I f . 2 (C. Cistula var. maculata?). 



K. Sv. Vet. .\kad. Hand. Band 26. N:o 2. 23 



