Infusoria of the Island of Bombay. 253 



their base, and an eye-spot laterally placed — that is, away from 

 the contracting vesicles and cilia. 



In the division of the cell-contents of the green filigerous 

 Infusoria, the eye-spot is at first seldom so well marked in the 

 daughter or subdivision cells which are inferior as in those 

 which are superior or close to the eye-spot in the parent. In- 

 deed it is frequently absent altogether in the former, while it 

 may be markedly present only in the latter, as in my figure of 

 Uvella bodo (fig. 14 d) ; but although, when not visible, it may, 

 in point of position, lead to doubt as to the organism to which 

 the cell belongs, when it is at the base of the cilium the cell 

 certainly appertains more to Euglena than to Eudorina, Volvox, 

 or Chlamydococcus, wherein the eye-spot is lateral, and not 

 anterior or terminal (figs. 22 & 24). 



Again, the single cilium is more typical of Euglena than of 

 either Eudorina, Volvox, or Chlamydococcus, in each of which 

 it is dual. At the same time it should also be noted that, in 

 the still forms or passive state of each of the latter, the cilia 

 appear to be altogether absent — that is, deciduous or retracted, 

 these organisms having the power to reproduce them in the 

 active state. 



Thus the Uvella bodo which I have figured seems more 

 nearly allied to Euglena than to Eudorina. 



It would, now, have been more satisfactory if in my note of 

 1861, where Uvella bodo was found almost exclusively with 

 Eudorina, I had set down the number of cilia and position of 

 the eye-spot in each member of the group. But I suppose, at 

 the time, I saw all that was conclusive, and therefore, in the 

 absence of this now desired detail, must present the note as it 

 is and for what it may prove hereafter to be worth. Upon 

 the number, however, of the cilia, as will presently appear, 

 there is not much reliance to be placed. 



Ehrenberg found Uvella bodo in company with Euglena 

 viridis, Chlorogonium euchlorum, &c, and figures something 

 like it in connexion with the latter (fig. 17, t. 7, op. cit.). 

 Perty simply states that it " seems " to be a developmental 

 stage of Euglena viridis (Zur Kenntn. klein. Lebensformen, 

 p. 177), and Stein "that each individual appertaining to a group 

 of Uvella bodo possesses several (four or five) flagelliform cilia 

 implanted on a short rostrum" {ap. Clap, et Lach. i Etudes 

 sur les Infusoires,' &c. vol. ii. p. 63). 



As above stated, I have often seen a bunch of cilia on the 

 front part of the group, but never more than one cilium on the 

 individual, although I think that sometimes the latter may 

 have possessed two, and that I have overlooked this occur- 

 rence. 



