114 Mr. E. Blyth on the Ornithology of the neighbourhood of 



From an examination of Cystoseira under very unfavourable 

 circumstances, viz. of dried specimens, and the fruit probably 

 immature, I am inclined to believe that spores and sporidia occur 

 in the same conceptacles. There is some reason to believe that 

 the same arrangement prevails in Halidrys. 



In the Sporiferce other subdivisions suggest themselves : in 

 some the spores are erumpent, breaking out beneath the cuticle 

 as in Padina ; in others, as Striaria, the spores are unaccompanied 

 by filaments, and Asperoccocus may be cited where the spores 

 are so accompanied. Should Desmarestia and Dichloria be found 

 sporiferous, they will be properly placed beside Halyseris. 



In Sporidiferce, as in Sporiferce, there occur membranous and 

 filamentous species. 



A question may arise as to the relative importance of spores 

 and sporidia; there cannot be a doubt that both are equally 

 capable of propagating the species. 



The above can only be considered an imperfect attempt, a 

 mere outline or suggestion ; those who possess a thorough know- 

 ledge of foreign as well as British species are alone entitled to 

 speak with confidence on the subject, and to such knowledge the 

 author of this attempt can lay no claim, and must leave his sug- 

 gestions to be added to and amended by more experienced algo- 

 logists. 



XVI. — Further Observations on the Ornithology of the neighbour- 

 hood of Calcutta. By Edward Blyth, Curator to the Mu- 

 seum of the Asiatic Society of Bengal. With Notes byH. E. 

 Strickland, M.A. 



[Concluded from p. 48.] 



No. 127. (vol. xii. p. 165, supra) I observed great numbers of Hi- 

 rundo rustica a few weeks ago, skimming over the salt-water lake a 

 little above Calcutta. 



No. 127 a. Hirundo daurica (erythropygia, Sykes) was observed in 

 considerable numbers in the middle of April upon the Calcutta espla- 

 nade. 



No. 128. This is also the M. dukhunensis of Sykes. I observe 

 that the M. picata of Franklin, which is the M. variegata, Latham, 

 is mentioned as having been received from Calcutta in the ' Rev. 

 Zool. par la Soc. Cuv.' 1839, pp. 40 and 138 (this being the only 

 volume of the useful work in question which I have for reference) ; 

 but I have never heard of the species being obtained in this neigh- 

 bourhood, having only received it from Central and Southern India. 



No. 130. This remarkable species, which is the type of my genus 

 Nemoricola, is the Bergeronette grise des Indes of Sonnerat, upon 

 which Latham founds his Motacilla indica. I obtained one beautiful 

 specimen during last cold season. 



