THE OPALINID CILIATE INFUSORIANS. 397 



B. fleischmanni Boettger, No. 29933, Juarriiilba, Costa Rica; Burgdorf and 

 Schild ; no Opalinids (formalin?). 



No. 2997S, 2S mm. long; Sau Carlos, Costa Rica; Burgdorf and Schild; no 



Opalinids (formalin?). 

 No. 29S91, 22 mm. long; Costa Rica; Burgdorf and Schild; no Opalinids. 

 No. 2992S. 19 mm. long; Costa Rica; Burgdorf and Schild; no Opalinids. 

 No. 19601, 25 mm. long; Rio Frio, Costa Rica; February 29, 1893; C. W. 



Richmond ; no Opalinids. 

 No. 48727, La Estrella, Costa Rica ; June 11 ; A. Alfaro ; no Opalinids 

 (formalin?). 

 H. lesucurii Dumeril and Bibron, several specimens ; Australia ; examined by 



Raff; no Opalinids. 

 *H. nassica Cope, No. 6226, 37 mm. long; Parag\iay; Captain Page; a few 



Cepedea diniidiata [paraguensis]. 

 H. peronil (Tschudi), No. 26408, 51 mm. long; female with eggs IJ mm. in 

 diameter ; Australia ; A. D. Ogilby ; no Opalinids. 

 Australian specimens examined by Raff, who reports no Opalinids from 



tliem. 

 No. 62746, 45 mm. long; Tamworth, New South Wales, Australia; Novem- 

 ber 2, 1919 ; C. M. Hoy ; no Opalinids. 

 No. 62744, 38 mm. long ; Wandandian, New South Wales, Australia ; August. 

 1919 ; C. M. Hoy ; no Opalinids. 

 *H. pickcringii (Holbrook), numerous living specimens from Raleigh, North 

 Carolina ; April, 1915 ; H. H. and C. S. Brimley ; for the most part abundantly 

 infected with Opalina pickeringii, many in division and with numerous cysts. 

 One living specimen ; Woods Hole, Massacluisetts ; August 13. 1919 ; M. M. Met- 



calf ; no Opalinids. 

 *No. 15260, 25 mm. long ; female with eggs in oviduct ; District of Columbia, 

 United States of America ; H. W. Henshaw ; a few Opalina ohtrigonoidea. 

 *No. .5380, 30 mm. long ; female with eggs ; Selkirk Settlement ; R. Kennicott ; 



rather many Opalina ohtrigonoidea. 

 *No. 3604. 2 specimens, each 20 mm. long, one a female with eggs ; Aux 



Plains River, Illinois; R. Kennicott; Opalina ohtrigonoidea. 

 No. 3604, another specimen ; same label ; no Opalinids. 

 *H. pickeringii X H. andersoni (?), living specimen; Oberlin, Ohio; many 



Opalina o h trigonoidea . 

 *H. pulchella Dumeril and Bibron, No. 5407, 30 mm. long ; Paraguay ; Captain 

 Page ; rather many Zelleriella hylaxena. 



No. 5407, 23 mm. long, female with eggs ; same label ; no Opalinids. 

 Six specimens from an unnamed locality in Ui'uguay were found by Cor- 

 dero (1919) to bear no Opalinids. 

 *H. regilla Baird and Girard. No. 31905, 40 mm. long; Three Sisters, Oregon; 

 5.000 altitude ; July 17. 1904 ; V. Bailey ; many Opalina orcgoncnsis. 



*No. 52321, 27 mm. long, Los Angeles County, California; E. J. Brown; 



rather many Opalina virgilloidca. 

 Nos. 52319, 52325, 37 and 21 mm. long ; same label ; no Opalinids. 

 *No. 22599, 40 mm. long. Vancouver Island, British Columbia; June 2, 



1895; True and Prentiss; rather many Opalina oregonensis. 

 No. 22598, 35 mm. long; same label; no Opalinids. 



No. 52382, 31 mm. long: Portland, Oregon; April 19, 1913; O. J. Murie; no 

 Opalinids. 

 H. rubra Daudin, 40 mm. long; Para, Brazil; "British Museum"; no Opalinids. 

 Nos. 48859, 48860, 30 and 33 mm. long; Bonito. Brazil; J. C. Branner; no 

 Opalinids. 



