THE OPALINIO ("TLIATE INFUSORIANS. 



197 



M easurements : JL, of a large individual,- B^ of a small individual- 



This O patina resembles O. ohtrigonoidea^ but in most individuals 

 the posterior end is acute, either tapering to a sharp point or ab- 

 ruptly acuminate. 



Fig. 165. — Opamna carolixNen.sis : « and h fhom diicfekext infections, X IIV 



DIAMETERS ; C FROM THE .SAME INFECTION AS 6, M.\GNIFIED 460 DIAMETERS. 

 OPALINA GUATEMALAE, new species. 



7yy^e.— United States National Museum No. 16567. 



Host.—Hyla haudinii Dumeril and Bibron, three infections from 

 Guatemala, the type infection being from United States National 

 Museum specimen No. 24819, 47 mm. long, collected by H. Hogue. 



