398 BULLETIN 120, UNITED STATES NATIONAL MUSEUM. 



* H. septentrionaUs Boulenger, No. 51867, 80 mm. long ; female with eggs ; 

 Los Hermanos Mountains, Cuba; May 31, 1914; P. Bartsch; many Opalina 

 sp. (?). 



* No. 27420, 43 mm. long ; Pinar del Rio, Cuba ; February 21, 1900 ; Pal- 



mer and Riley; rather many Opalina sp. (?). 

 *No. 5096, 3 specimens, 48, 55, and 70 mm. long; Cuba (?) ; C Wright; 



all with Opalina sp. (?). 

 No. 36602, 68 mm. long; Bahama Islands; T. Barbour; no Opalinids, 



Nyctotherus. 



* No. 32029, 60 mm. long ; New Providence, Bahama Islands ; June 19, 

 1903; United States Fish Commission; many Zelleriella [of Hyla sep- 

 tentrionalis], also Opalina sp. (?). 



No. 32030, 32033, 45 and 44 mm. long ; same label ; no Opalinids, one con- 

 tained Balantidium. 

 No. 32026, 55 mm. long; female with eggs all laid; Long Island, Bahama 

 Islands ; July 16, 1903 ; Riley ; no Opalinids. 

 H. simplex Boettgei-, No. 33127, 38 mm. long; Tonkin, China; Kny-Scheerer 

 Co.; no Opalinids. 



* H. venulosa (Laurenti), No. 27797, 95 mm. long; La Guaira, Venezuela; 



July 3, 1900 ; Lyon and Robinson ; a few Zelleriella venezuelae. 



Nos. 35141, 35142, 80 and 85 mm. long; both females with eggs; Guate- 

 mala; H. Berendt; no Opalinids. 



No. 38265, 63 mm. long ; female with eggs mostly laid ; found in Tillandsia 

 along with pale colored tadpoles, Cordoba, Mexico; March 21, 1868; 

 Knab ; no Opalinids. 



Nos. 13975, 13976, 70 and 75 mm. long ; Nicaragua ; August 28, 1884 ; J. A. 

 McNeil ; no Opalinids. 



No. 36377, 75 mm. long; female with a few eggs left in the oviduct; 

 Chicara, Venezuela ; June, 1905 ; G. K. Cherrie ; no Opalinids, Balan- 

 tidium. 



No. 22545, 77 mm. long ; La Guaira. Venezuela ; June 22, 1895 ; W. Robin- 

 son; no Opalinids. 



* H. versicolor LeConte, a half -grown living specimen ; Leland, Michigan ; July 

 18, 1917, M. M. Metcalf ; very many Opalina hylaxena. 



* Seven living tadpoles from Woods Hole. Massachusetts ; July 21, 1919 ; ]\I. 

 M. Metcalf; all well infected either with Opalina hylaxena form orhi- 

 culata, or with 0. hylaxena form parvinucleata. 



Two adults, Woods Hole, Massachusetts; July 8, 1919; M. M. Metcalf; no 

 Opalinids. 



* No. 44550, 45 mm. long; Tate, Georgia; July 4, 1908; Howell; a good 



many Opalina hylaxena form georgiana. 

 *No. 50667, 33 mm. long; Anderson, Indiana; September 23, 1900; W. 



Knowlton ; rather many Opalina hylaxena form undetermined. 

 No. 49726, 33 mm. long ; Plummer Island, Maryland ; Biological Survey ; 



no Opalinids. 

 No. 51437, 33 mm. long; Autauquaville, Alabama; May 10, 1914; Peters; 



no Opalinids. 

 No. 49570, 35 mm. long; Long Corner, Maryland; July, 1912; S. O. Bur- 



dette; no Opalinids. 

 No. 42630, 50 mm. long ; Lake Mackinkuckee, Indiana ; September 7, 1906 ; 



Evermann and Clark ; no Opalinids ; a few Balantidium. 

 Nos. 45517, 45518, 45 and 39 mm. long; Mer Rouge, Louisiana; June 2. 



1892, Bailey ; no Opalinids. 



