-JO UNIVERSITY OF COLORADO STUDIES 



Order MONADIDA 



Family HETEROMONADLDAE 



Anthophysa Bory d. St. Vincent. A. vegetans Mull., Corona and Yankee Doodle lakes. 



Order EUGLENIDA 

 Family EUGLENLDAE 

 Euglena Ehrenberg. E. viridis Ehr., Ohmond Lake; E. deses Ehr., Long Lake; E. 

 spirogyra Ehr., Long Lake; E. acus Ehr., James Peak; E. torta Stokes, Lake Eldora. 

 Of the above species all except the last are widely distributed among the lakes. 

 E. viridis is the most common. 

 Phacus Dujardin. P. pleuronectes Mull., Lake Eldora; P. longicaudus Ehr., Redrock 

 Lake; P. pyrum Ehr., Ohmond Lake. 



Species of the genus were not found abundantly in any locality. 

 Trachelomonas Ehrenberg. T. piscatoris Stokes; T. cylindrica Ehr.; T. armata Stein; 

 T. horrida Palmer; T. crebea Kellicott; T. volvocina Ehr.; T. hispida Stein. 



Most of the above species are widely distributed from the Second Chicago Lake 

 and Corona to lower levels. T. volvocina is most common. T. crebea, which has a 

 curved neck, was observed in Redrock Lake only. 



Family ASTASITDAE 

 Astasia Ehrenberg. A.trichophora Ehr., Corona, Ohmond Lake and other lower lakes. 



Common. 

 Distigma Ehrenberg. D. proteus Ehr., Ohmond Lake. 



Very widely distributed. 



Family PERANEMLDAE 



Petalomonas Stein. P. abscissa Duj. This species, which has a very prominent ridge, 

 was observed in Reynolds' Lake only. P. mediocanellata Stein. A form which 

 probably should be placed here was observed in Lake Eldora. 



Entosiphon Stein. E. sulcatus Duj., Redrock Lake only. 



Heteronema Dujardin. H. acus Ehr. Common in Lake Eldora. 



Class PHYTOMASTIGOPHORA 

 Order CHRYSOFLAGELLIDA 

 Family CRYPTOMONADLDAE 



Chilomonas Ehrenberg. C. Paramecium Ehr. 



Very widely distributed. Found in Ohmond Lake and at lower altitudes. 

 Cryptomonas Ehrenberg. C. ovata Ehr., Reynolds' Lake. 



Common in nearly all of the lower lakes. 

 Chlamydomonas Ehrenberg. 



Two species of this genus were observed, one in Summit Lake, one in Redrock 

 Lake. Neither were identified. Not common. 



