THE FAUNA OF BOULDER COUNTY 



229 



Class ZOOMASTIGOPHORA 



Flagellated forms in which animal characteristics are predominant (Calkins). 



Order MONADIDA 



Organisms of simple structure with one or more flagella at one end. 

 The Deinamoehida^ (Rhizomastigina of Biitschli) have both flagella and pseudo- 

 podia. The others are without definite pseudopodia. 



Family ANTHOPHYSIDjE (heteromonadina Biitschli) 

 With two flagella, but one often not readily visible. 



Fig. I. Fig. 2. 



Fig. I. — Ceraiiomyxa mucida. Sporophore, greatly enlarged. (After Lister.) 

 Fig. 2. — Physarum nutans. Two sporangia, much enlarged. (After Lister.) 

 Drawings by Miss Edith Farrington. 



Subfamily ANTHOPHYSIN^ (dendromonades Stein) 

 Colony-forming . 

 (i) Anthophysa Bory de St. Vincent. Animals united in compact clusters, often 

 attached to a somewhat rigid, simple or branched stalk. Bodies pear-shaped, each 

 with two flagella of unequal length (Edmondson). A. vegetans (Miiller). Detached 

 clusters roll through the water in the manner of Vohox. 



Order HETEROMASTIGIDA 



The essential morphological characteristic is the possession of two or more flagella, 

 one or two of which are directed downward and backward, while the other is 

 directed forward and used in locomotion (Calkins). 



Family NOTOSOLENID^ 



(2) Notosolenus Stokes. Oval or subangular, flattened, concave on one side, 

 rigid, with the long flagellum straight and stiff, vibratile at end. N. opocamptus 

 Stokes.* Length of body 12 m. 



" ConcemiBg the identity of Mastigamoeba with Deinamoceha, see Penard, Ann. Soc. Zool. Suisse, Vol. 

 17, fasc. 2 (1Q09). 



