THE OPALINID CILIATE INFUSORIANS. 407 



*E. Unghami Stejneger, No. 5955S, 32 mm. long, Urubamba, Peru, 9,500 feet 

 altitude, "under wet stone," July 12, Yale Peruvian Expedition, Zelleriella 

 Mnghami. 



* No. 48560, 22 mm. long ; Cuzco, Peru ; 11,000 feet altitude, July 9 ; Yale 

 Peruvian Expedition ; a few Zelleriella Mnghami. 



E. brocchi (Boulenger), Nos. 4S281, 48282, 16 and 21 mm. long; La Mica, Costa 



Rica ; A. Alf aro ; no Opalinids. 

 E. diastema (Cope), No. 48728, 13 mm. long; La Estrella, Costa Rica; A. Alfaro; 



no Opalinids. 

 E. fleischmanni Boettger, No. 20698, 37 mm. long ; Graytown, Nicaragua ; Octo- 

 ber 28, 1892 ; Richmond ; no Opalinids. 



Nos. 28716, 28717, 40 and 27 mm. long ; Punta de Pana, Panama ; July 24, 

 1908; McKenney; no Opalinids. 



* E. footei, Stejneger, No. 49563, 19 mm. long; Cuzco. Peru, 11,500 feet altitude; 

 Yale Peruvian Expedition ; Zelleriella ciisconis. 



No. 49561, 19 mm. long; Tincochaca, Peru; 7,000 feet altitude, August 8; 

 Yale Peruvian Expedition ; no Opalinids. 



* E. leptopus (Bell), No. 15125, 19 mm. long; Mayne Harbor, Patagonia; Febru- 

 ary 5, 1887 ; Protoopalina diplocarya. 



E. martinicensis (Tschudi), No. 10121, 32 mm. long; Tobago Island, West 

 Indies ; 1878 ; F. A. Ober ; no Opalinids. 



No. 11253, 2 specimens, each 35 mm. long ; Zacatecas, Central Mexico ; May, 

 1880; L. Gueade; no Opalinids (very soft). 



E. monensis (Meezwarth), No. 29389, 33 mm. long; Mona Island, Porto Rico; 

 August 9, 1901; B. S. Bowdish ; no Opalinids (very soft). 



E. pohjptichus (Cope), Nos. 29899, 29962, 29975, 17, 17, and 20 mm. long; San 

 Carlos, Costa Rica; Burgdorf and Schild; no Opalinids (formalin ?), 



E. recordii (Dum4ril and Bibron), No. 8310, 22 mm. long; Chihuahua, Mexico; 

 Potts; no Opalinids. 

 No. 30955, Lemon City, Florida ; E. J. Brown ; no Opalinids. 



E. richmondi Stejneger, Porto Rico ; many formalin specimens yielding no 

 Opalinids. 



E. rugosus (Peters), Nos. 29S94, 29896, 22 and 20 mm. long; Costa Rica; Burg- 

 dorf and Schild; no Opalinids (formalin ?). 



* Leptodactylus albilabris (Guenther), No. 10029, 4 specimens 25 to 30 mm. 

 long ; Tehuantepec, Mexico ; Sumichrast ; one uninfected, one scantily, and two 

 abundantly infected with Zelleriella leptodactylt. 



* No. 27749, 35 mm. long ; Mayaguez, Porto Rico ; September, 1900 ; Bow- 

 dish; many Zelleriella leptodactylt. 



No. 27750, same label ; no Opalinids. 



* No. 27053, 37 mm. long ; Luguillo, Porto Rico ; March 4, 1900 ; Richmond ; 



numerous Zelleriella leptodactylt. 

 No. 26821, 35 mm. long ; Mameyez, Porto Rico ; March 3, 1900 ; L. Stejneger ; 



no Opalinids (formalin ?). 

 Nos. 27103, 27109, 45 and 35 mm. long ; Vieguez Island, Porto Rico ; March 



3, 1900; L. Stejneger; no Opalinids (formalin ?). 

 No. 27765, 32 mm. long ; Tehuantepec, Mexico ; Sumichrast ; no Opalinids. 



* L. caUginosus Girard, No. 30116, 42 mm. long ; female with immature eggs ; 

 Tehuantepec, Mexico ; numerous Zelleriella leptodactylt. 



No. 30117, same label ; no Opalinids. 



No. 14080, 2 specimens, 25 and 30 mm. long ; Presidio, Mexico ; Porrer ; no 

 Opalinids. 



* L. gracilis (Dum^ril and Bibron), Nos. 10018, 10019, 34 and 37 mm. long; 

 Tehuantepec, Mexico ; Sumichrast ; many Zelleriella leptodactyli. 



