MYXOBOLUS. 341 



Habitat. — Ovary and liver of Glarias hatrachus Cuvier & 

 Valenc. ; gills of Katla katla (Ham.-Buch.) ; liver of Girrhina 

 mrigala (Ham.-Buch.) ; and gall-bladder of Labeo calhasu 

 (Ham.-Buch.), Labeo rohita (Ham.-Buch.), and Girrhina 

 mrigala (Ham.-Buch.) : Bengal, Calcutta. 



286. Myxobolus mrigalae Chakravarty. 



■fMyxobolus mrigalss, Chakravarty, 1938. 



Cysts oval, on the scales of the host, perforated, and con- 

 taining large number of mature spores. Polysporous. Spores 

 spherical to oval, valves thick, exhibiting several triangular 

 markings in front view. Sporoplasm situated at the posterior 

 end of the capsules. Polar capsules pyriform, unequal in 

 size, divergent, and containing distinct coiled filaments. 

 An iodinophilous vacuole is present. 



Dimensions. — Cysts *75-l-5 mm. in length and -75-1 mm. 

 in breadth ; spores 7-2 1-8-24 ju, ; polar capsules 5-15/x by 

 3-09/1 and 3-09 /x by 2-06 /x ; polar filaments 41-2 /x and 20-6 /i 

 respectively. 



Remarks. — Description is based on Chakravarty's paper in 

 manuscript. 



Habitat. — Scales oi Girrhina mrigala (Ham.-Buch.) : Bengal, 

 Calcutta. 



287. Myxobolus nodularis Southwell & Prashad. (Fig. 168.) 



^Myxobolus nodularis, Southwell & Prashad, 1918, p. 347, pi. xi, 

 figs. 32-6. 

 Myxobolus nodularis, Kudo, 1920, p. 153 ; 1933, p. 209. 



Cyst rounded or sHghtly elongated, creamy -yeUow in colour. 

 Spore ovoidal. Suture between valves thick. Two polar 

 capsules. Polar filament very much coiled. 



Fig. 168. — Spore of Myxobolus nodularis Southwell & Prashad. 

 (After Southwell and Prashad.) 



Dimensions. — Cysts from 3-5 to 3-8 mm. in length and 

 2-3-2-8 mm. in breadth ; spores 9/x by 7-2/x ; polar capsules 

 3-4)u, in length, filament 18-3/^ in the extruded condition. 



Habitat. — ^Muscles of Rasbora daniconius (Ham.-Buch.) : 

 Bengal, Mirpur, Dacca. 



