242 BULLETIN 120, UNITED STATES NATIONAL MUSEUM. 



OPALINA GIGANTEA, new species. 



Type.— United States National Museum Cat. No. 16605. 



iJost. — Biifo compactilis Wiegmann, three abundant infections, 

 from Texas. The type infection is from United States National 

 Museum toad No. 26460, 71 mm. long. 



Measurements of a large individual. — Length of body 0.58 mm.; 

 width of body 0.427 mm.; thickness of body, anterior 0.033 mm., 

 middle 0.037 mm., posterior 0.038 mm.; diameter of nuclei 0.008 mm. 

 to 0.009 mm.; diameter of endospherule 0.00094 mm.; cilia line in- 

 terval, anterior 0.00225 mm., middle 0.003 mm., posterior 0.0045 mm. 



This huge Opaliyia is shaped like a broad 0. ranarum^ but often 

 shows clear indication of a short, rounded posterior point. It is 

 thinnest in front and thickest behind. Its nuclei are very large, its 

 endospherules minute and numerous, but not so numerous as those 

 of 0. raddei. The total number of nuclei in a large individual is 

 about 500. 



OPALINA ASIATICA, new species. 



Type. — United States National Museum Cat. No. 16608. 

 Host. — Bufo hufo asiaticus (Steindachner), one infection from 

 United States National Museum specimen No. 46617, 102 mm. long, 



from Shanghai, China, May 26, 1911 ; 

 D. C. Jansen, collector. 



Measurements of a small individ- 

 ual. — Length of body 0.09 mm. ; width 

 of body 0.0522 mm.; diameter of 

 nuclei 0.0026 mm. to 0.004 mm. ; diam- 

 eter of endospherule 0.00115 mm.; 

 FiG.2is.-0rALiNAAsiATicA, X 460 cilia line interval, anterior 0.00128 

 DiAMKTERs, SHOWING NUCLEI AND mm., posterlor 0.00166 mm. An ordi- 



A rOUTION OF THE LINES OF INSER- • T • i i • i-, -. ^^' i i 



TioN OF THE CILIA. uary individual is 0.195 mm. long by 



0.086 mm. broad. 



This Opalina has very small nuclei and minute endospherules. In 

 shape it approaches 0. ranarum from truncata. It seems clearly a 

 distinct species. 



OPALINA [BUFOXENA], new species (?). 



A specimen of this form has been deposited with the United States 

 National Museum as Cat. No. 16609. 



Host. — Bufo hufo asiaticus (Steindachner), one infection, from 

 United States National Museum specimen No. 52355, 63 mm. long, 

 from southern Manchuria ; A. de C. Sowerby, collector. 



Measurementfi of an ordinary individual. — T>ength of body 0.18 

 mm. ; width of body 0.098 mm. ; thickness of body 0.028 mm. ; length 

 and width of nuclei, first 0.0056 mm. by 0.004 mm., second 0.0058 

 mm. by 0.0045 mm., third 0.0075 mm. by 0.005 mm., fourth 0.0075 



