426 a. WESTERN ON SOME FOREIGN ROTIFERS. 



deposits on the brain lobes. They show dark red by transmitted 

 light, but their true character is manifested by flooding the field 

 with light or by examination on a dark field. Under these cir- 

 cumstances the Rotifer is plainly an Eosphora, and but for the 

 chalky deposits on the brain it has a very striking resemblance to 

 Eosphora digitata. 



Rotifer mento, Anderson (Notes on Indian Rotifers, Journ. 

 Asiat. Soc, Bengal, 1889, Vol. Iviii.) — Mr. H. Jennings, in his 

 report of the Rotatoria of the great lakes of Michigan, describes 

 a Rotifer which he identifies with this species, and in his article 

 says, *' It is of great interest to find here this form recently 

 described from Calcutta, India. It has, I believe, not been 

 reported since, except doubtfully, and without notes, in one of the 

 lists of the Quekett Club collections in England " (Journ. Q. C, 

 July, 1893, p. 276). I was very pleased to see that even the 

 lists of Rotifers, etc., found at our excursions were deemed worthy 

 of reference, and as I am responsible for the report in question 

 may perhaps be permitted to say a few words in explanation of 

 the query appended. On the particular excursion referred to I 

 found a Rotifer (genus Rotifer) inhabiting a tube which I was 

 fortunate enough to see it actually constructing. Examples were 

 numerous. Mr. Jennings' description of the process and also of 

 the animal itself, as found by him, agree remarkably with my own 

 observations, but I was at the time, and am still, unable to satisfy 

 myself of the identity of my Rotifer with Mr. Anderson's descrip- 

 tion of R, mento. 1 have since found it several times, and should it 

 be the same species, tiiis is another to be added to the British 

 list. 



Rattulus hicornis. — The error in the description of this Rotifer, 

 which I attempted to correct in my note of 15th September, 1893 

 ("Q. M. C. Journal" for October, 1893, p. 308), has, unfor- 

 tunately, been repeated. Tlie description should read, " Toes 

 unequal, substyles three." 



