Cliona. 



466 sulphurea, Desor. 

 Microciona, Bowerbank. 



467 prolifera, Verrill. 

 Halichondria. 



(136) panicea, Pallas? 



Cladorhiza. 

 468 grandis, Verrill. 



Chalina. 



(240 ?) oculata, Pallas ? 

 (359) arbuscula, Verrill. 

 And some undetermined species. 



VIM, RHIZOPODA, 



I. -FRESHWATER SPECIES. 1 

 Orders Lobosa and Reticularia. 

 Pelomyxa, Greef. 



i palustris, Greef. 



Amoeba, Ehrenberg. 

 proteus, Leidy. 

 verrucosa, Ehren. 

 vestita, Penard. 

 Difflugia, Le Clerc. 

 pyriformis, Perty. 



var. cornuta, Leidy. 



var. vas, Leidy. 



var. fulva, Penard. 

 acuminata, Ehren. 

 amphora, Leidy. 

 elegans, Penard. 

 bicornis, Penard. 

 corona, Wallich. 

 globulosa, Dujardin. 

 marsupiformis, Wallich. 

 avellana, Penard. 

 lanceolata, Penard. 

 bacillifera, Penard. 



19 var. inflata, Penard. 



20 lobostoma, Leidy. 



21 arcula, Leidy. 



22 constricta, Ehren. 



23 compressa, Carter. 



24 entochloris, Leidy. 



25 urceolata, Carter. 



26 var. amphora, Leidy. 



27 var. lebes, Penard. 



28 tuberculata, Wallich. 



29 mamillata, Penard. 



30 rubescens, Penard. 



31 elisa, Penard. 



1 The specimens of a few of the following forms are from 

 North America. 



Centropyxis, Stein. 



32 aculeata, Stein. 



33 var. ecornis, Leidy. 



34 var. discoides, Penard. 

 Arcella, Ehrenberg. 



35 vulgaris, Ehren. 



36 var. angulosa, Leidy. 



37 hemisphaerica, Perty. 



38 catinus, Penard. 

 Lecquereusia, Schlumberger. 



39 jurassica, Schlumb. 



40 var. epistoma, Penard. 



41 var. bacillaris, Penard. 

 Nebela, Leidy. 



42 collaris, Leidy. 



43 longicollis, Penard. 



44 lageniformis, Penard. 



45 tubulosa, Penard. 



46 flabellulum, Leidy. 



47 carinata, Leidy. 



48 galeata, Penard. 



49 bigibbosa, Penard. 



50 dentistoma, Penard. 



51 bursella, Vejdovsky. 



52 militaris, Penard. 



53 minor, Penard. 



54 tenella, Penard. 

 Hyalosphenia, Leidy. 



55 papilio, Leidy. 



56 elegans, Leidy. 



57 punctata, Penard. 

 Quadrula, Schulze. 



58 symmetrica, Schulze. 



59 var. irregularis, Penard. 



60 discoides, Penard. 

 Heleopera, Leidy. 



61 rosea, Penard. 



62 petricola, Leidy. 



