DIFFLUGIA LOBOSTOMA. 



47 



stages. There is no conclusive evidence, however, 

 that they do so. The sinuses in the three-lobed 

 or four-lobed mouth of D. lobostoma are deeper and 

 wider than those of the multi-lobed mouth of D. corona, 

 not to mention other disparities in the tests of the 

 two species. 



Fin. 60. Dijflugia proteifofmis Ehrenb. Three aspects of the same 

 individual. ? = D. lobostoma. ' After Ehrenberg, ' Inf us.' t. ix. 

 f. 1 a-c (reduced), x 200. 



In our remarks on D. oblonga Ehrenb. reference is 

 made to the uncertainty regarding the particular 

 organism to which Ehrenberg applied the name 

 D. proteiformis. There is more probability of the 

 author having had before him examples of D. lobostoma 

 judging from his figures than any other rhizopod. 



FIGS. 61-63. Diagrammatic oral views of the tests of (61) the 3-lobed 

 form of Difffuyia lobostoma, (62) D. " tricuspis " (after Carter), and 

 (63) D. gramen. 



Upon the confusion in nomenclature which has arisen 

 Leidy observes (under D. lobostomo) : " As ordinarily 

 seen it [the test] bears so close a resemblance with 

 the corresponding views of D. proteiformis as des- 

 cribed and figured by Ehrenberg, that it may not only 

 be readily taken for the same, but I have suspected that 

 Ehrenberg may have actually had this animal under 



