20 W. B. TURNER, FRESH-WATER AULE OF KAST INDIA. 



I can hardly see the validity of Klebs' views loc. cit. 011 this speeies; his 

 f. 13 h (striis omissis) is correct, but his 6 compressum f. 11 a b is widely different; 

 the inclusion of C. Cynthia, f. 12 a c, by Dr. Klebs will not meet with general ac- 

 ceptance. 



Central India, J. S.; British Burinah, from Utricularia sp., G. v. L. 



8. C. ulna, Focke (Phys. Stud. p. 68, t, III, f. 30, 1847; C. directum Archer Micr. 

 Journ. p. 249, t, XII f. 23, 24, 1862; C. intermedium Kalis Hr. Desm. p. 171, t. 

 XXIX, f. 3. 1848; C. subjuncidum De Notris. Klcm. p. 63, t. VII, f. 68, 1867; CL 

 intermedium fi directum Klebs Desm. Preuss. p. 16. t. II, f. 17, 1879). Forma 



Long. 306—364, lat. 17—20 ,</. 



This form has the apices slightly less rounded, or more acute, than the type; 

 striae 16—18. 



9. Cl. liueatum, Ehr. (Berl. Abhandl. p. 238, 1833; Inf. p. 95, t. VI, f. VIII, 1838). 

 Form rather shorter and stouter than the European one. 



Long. 522, lat, 31 ,u. 

 Near Nilghiri Hills? J. S. 



10. Cl. angustatum, Kutzing (Phyc. Germ. p. 132, 1845). 



Long. 418, lat, 23 /u. 



Costa) 4, spiral; membrane rufescent, Surely Brébisson was in error when he 

 informed Kales (Br. Des. pp. 171 — 2) that CL angustatum had 10 — 12 eostae! Kutzing 

 says, Sp. Alg. p. 166, »costis evidentibus 4», Avhich is apparentiy correct, 



Central India, J. S. 



11. Cl. (lidymotocum, Cobda (Alm. de Carlsbad, p. 209, No. 64, t. V, f. 64, 1835; non 

 Kalks; CL hirudo Delponte, Des. Sub-alp., p. 205, t. XVIII, f. 6, 8, 1877). 



Specimens intermediate between Cokda's and Dklpontks measurements, 



Long. 391, lat. 40.5 ,«, 

 342, » 36 fi. 

 Delponte's dimensions are, long. 382 — 511, lat. 40 — 43 u; while Corda gives (pro- 

 bably incorrectly) long. 251 /'. Perhaps the suggestion of Dr. Nordstedt that 

 CL hirudo might stånd as »/? hirudo» of 67. Baillyanum BrÉb. would be better stated 

 as Cl. didymotocum Corda (non aliorum!) />' hirudo Dklp. I would further remark 

 that the CL didymotocum of Kalks and subsequent authors would be well renamed 

 as CL fractum (as it is broken up by its sutures into 3 or 4 parts), while CL Bailly- 

 anum BrÉb. (in litt, apud Ralks, 1845) was practically unpublished when Focke de- 

 scribed and figured it as CL ensis (Phys. Stud. p. 68, t, III, f. 31, 1847; CL anti- 

 acerosum De Notaris Elem. p. 61, t, VI, f. 63, 1867). The CL ensis Delp. p. 219, 

 t. XVI, f. 14 — 17 seems to be a very largé and attenuate form of Penium libellula 

 (Focke) Nordst. (CL libellula Focke 1. c. f. 29; P. libellula, Nordstedt Desm. Bornh. 

 p. 184, 1888,) in which latter rnemoir the remarks, on p. 185, on the above speeies 

 may be noted! I here take the opportunity of thanking Dr. Nordstedt for kindly 

 permitting me to see his copy of Corda's rare memoirs. 



12. Cl. macilentum, Bréb. (Liste, j>. 153, t. II, f. 36. 1856). 



(Wallich, Mscr. No. 283, f. 7.). 



