Mr. H. J. Carter on new species o/Euglena. 17 



distinguishing characters between Astasia limpida and Euglena 

 which I have given at the commencement, is a mistake. For 

 the purpose, therefore, of further emendation, I would also take 

 away these two genera from the Euglenians, and, transferring 

 Ehrenberg's name of " Astasiese " to them, as well as his genus 

 " Astasia," thus make a new family, which I know to have several 

 forms so like the different species of Euglena, that they might 

 be viewed as the Eugleme of the animal kingdom, without con- 

 founding them with the true Eugleme, which evidently belong 

 to the vegetable kingdom. 



Euglena. 



Having during the past year met with two freshwater species 

 of Euglena which appear to me to be undescribed, I have named 

 and characterized them as follows : — 



Euglena fusif or mis, d. sp. PI. I. figs. 15 & 17. 



Short, thick, fusiform, obtuse, of a rich green colour, provided 

 with a long, delicate, single cilium, which projects from a 

 slightly bilabiate anterior extremity, a little behind which is 

 the eye-spot, attached to the contracting vesicle. Nucleus 

 central, situated between the ends of two elongated, refrac- 

 tive, nucleated cells, which extend I'ound the body equatorially. 

 Tailless. Motion during progression oscillatory, and rotating 

 on the longitudinal axis. Length about l-700th, breadth 

 about 1-1 100th of an inch. 



Hab. Freshwater tanks in the island of Bombay. 



Euglena zonalis, n. sp. PI. I. fig. 16. 



Short, thick, ovoid, cylindrical, slightly narrowed anteriorly, of 

 a rich green colour ; provided with a long delicate cilium, 

 which projects from the notch of a slightly bilabiate anterior 

 extremity ; a little behind which is the eye-spot, attached to 

 the contracting vesicle. Nucleus central, between the ends of 

 two w4de, refractive, nucleated cells, which extend round the 

 body equatorially. Tail adhesive or suctorial (?), short, about 

 one-sixth part of the length of the body. Motion during 

 progression oscillatory, and rotating on the long axis of the 

 body. Length 1-1 100th, breadth 1-1 800th of an inch. 

 Hab. Freshwater tanks in the island of Bombay. 



Obs. These two Euglence are remarkable for having that 

 refractive cell or oi'gan which I hav^e called the "glair-cell" 

 equatorial instead of longitudinal, as in Euglena spirogyra, or 

 single, and in the anterior lip, as in Crumenula texta, &c.* 



* Annals, vol. xviii. p. 241. pi. 7- fig- 87, &c. 

 Ann. ^ Mag. N. Hist. Ser. 3. Vol. iii. 2 



