of England and India. 20 



Ohs. Only two specimens of this Rhizopod were obtained — 

 viz. one containing the animal in a passive state, and the other 

 empty. They were found in the water which had been poured 

 over some specimens of Peltigera canina, to moisten them ; and 

 these specimens had been brought from the neighbourhood of 

 Tavistock. Figures of both tests are given to show that there is 

 some little variety in their shape ; and the small one is drawn 

 upon the same scale as that of the Dijfflugia generally, to show 

 its relative size. In the test containing the animal, the latter 

 will be observed to be retracted, and, as usual under such cir- 

 cumstances, to have secreted a kind of fibrous structure, which 

 is arranged transversely, in the form of a diaphragm, towards 

 the aperture. Portions of undigested food are seen in the body; 

 and the presence of two of these around the nucleus (one of 

 which is posterior to it, in which position it never occurs in 

 Euglypha) makes me call this Rhizopod, provisionally, a Dif- 

 flugia, although the form of the pseudopodia can alone settle 

 this question, which thus must be left for future observation to 

 determine. 



Difflugia spiralis, Bailey (mihi). PI. I. fig. 9. 



This species is also very common here. I never saw it in the 

 island of Bombay. It is generally covered with grains of hyaline 

 quartz, but still not unfrequently with minute, short, cylindrical, 

 colourless filaments, arranged parallel to each other, although in 

 a more or less tortuous manner {d). In Dr. Wallich^s figure of 

 this species, under the name of " Difflugia proteiformis (var. septi- 

 fera " (Annals, ser. 3. vol. xi. pi. 10. fig. 12), the covering appears 

 to consist of little subround bodies, of uniform shape; and in 

 that of D. acu7ninata, Ehr., close by, it is observed (p. 453) — 

 " the portion of the test around the aperture is built up entirely 

 of chitinous pellets." 



Difflugia ? PI. I. figs. 10, 1 1 . 



The tests of two othev Difflugia (figs. 10 & 11) were both found 

 in heath-bog water, with D. urceolata, the former empty, the 

 latter containing the animal ; but as these were the only speci- 

 mens of this shape met with, I have merely inserted their figures 

 for what they may hereafter prove worth. 



EcHiNOPYXis, Clap, et Lachm. 



Echinopyxis aculeata, Ehr. (sp.) PI. I. fig. 8. 



Common in the island of Bombay, as well as on the south 



coast of Devon, at Budleigh-Salterton. The largest specimens 



that I have seen in the latter locality measured about -r^th of 



an inch long, and about the same transversely in the broadest 



