EXPLANATION OF PLATE, XI- 
Mental disk and pectoral fins of Indian and Persian species of 
Discognathus. 
Fic. 1.—D., adiscus, sp. nov. 
2.--D. phryne, sp. nov. 
3.—D. jerdoni (Day). Adult male. 
4.—D. stenorhynchus (Jerdon). Adult male. 
5.—D. elegans, sp. nov. Adult male. 
6.—D. gotyla (Gray & Hardwicke). Young male. 
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