354 ADDITIONAL SPECIES, ETC. 



474*. OLnanthe fluviatilis, Golem. 



Area 13 3 4 5**8. 



South limit in Dorset, Hants, Kent, 



North limit in Leicester, Warwick, 



Estimate of provinces 8. Estimate of counties 30. 



Latitude 50 — 54. English type of distribution. 



Agrarian region. Inferagrarian zone. 



Descends to the coast level, in Ouse, &c. 



Ascends to 100 yards, more or less. 



Range of mean annual temperature 51 — 48. 



Native. Lacustral. In the first volume of this work 

 the formula was very imperfectly fiUed in for the present 

 species, but little known or noticed up to the time of its 

 date. Even now, the re-written formula shows an area 

 and census stiU perhaps much within what they may 

 eventually prove to be. In addition to the counties above 

 mentioned, those of Somerset, Wilts, Oxford, Herts, Es- 

 sex, Suffolk, and Northampton have been reported or 

 ascertained. (See vol. i. page 445.) 



635. Fedia carinata, Stev. 



Area 1 * 3 * 5 * 7 * * 10. 

 South limit in Devon, Kent, 

 North limit in York, ? 



Estimate of provinces 8. Estimate of counties 10. 

 Latitude 50 — 55. English tj^e of distribution. 

 Agrarian region. Inferagrarian — MidagTarian zones. 

 Descends to the coast level, in the Peninsula. 



