Dr. Wallich on the Amoebae. 215 



strigoso-rugoso lateraliter striate ; meso- metasternoque laevibus. 

 L. 2 miU. 



Hah. Honduras. 



Distinguished from the following by characters given below ; 

 it is hardlj necessary to say the rugosity of the under surface 

 requires a microscope to discover it. 



Idolia punctisternuniy n. sp. 



Orbicularis, conyexa, brunneo-picea, nitida, undique sparse punctu- 

 lata ; pedibus antennisque brunneis, his clava testacea ; fronte 

 marginata ; pronoto stria marginali integra, basi baud arcuato, 

 antice utrinque acute angulato ; elytris tenuissime marginatis ; 

 prosterno minute strigoso-rugoso, metasternoque sparse punc- 

 tulatis. L. 2^ mill. 



Hab. Blumenau, Brazil. 



This species is exceedingly like the foregoing, but may 

 be at once recognized by the very distinct punctuation of 

 the under surface, the punctures being placed with singular 

 regularity at equal distances from each other. The base of the 

 thorax is much less arcuate in ^unctisternum than in Icevigata, 

 and the anterior angles in Icevigata are, comparatively speak- 

 ing, obtuse. 



XXII. — Critical Notes on Dr, Augustus Gruber^s " Contribu- 

 tions to the Knowledge of the Amoebas." By Surgeon- 

 Major Wallich, M.D. 



In the ' Annals ' for February 1882 there appeared a transla- 

 tion of a paper by Dr. Gruber bearing the above title*, in 

 which the author brought forward as new, and original on his 

 part, certain facts and observations relating to the organiza- 

 tion and vital phenomena in Amceha, which, as a matter of 

 fact, had been discovered and published by me, also in the 

 ' Annals,' upwards of twenty years ago. It so happened that 

 owing to long-continued serious illness I was prevented from 

 controverting Dr. Gruber's statements at the period referred 

 to ; and hence the matter became almost obliterated from my 

 memory. To my surprise, however, the entire subject was 

 reopened by the appearance, in the * Journal of the Koyal 

 Microscopical Society ' for April 1885, of a summarized ver- 

 sion of a further paper by Dr. Gruber, in which most of his 

 previously made statements were not only reiterated but con- 



* Zeitschr. f. wiss. Zool. Band xxxi. pp. 469-470. 



