I9I5-] 



Fauna of the Chilka Lake : Crustacea Decapoda. 



255 



the outer ovoid, with a small bilobed tubercle against which the endopod is folded 

 when the tail-fan is closed. 



The above description is taken from an individual, nearly 80 mm. in total 

 length, that was obtained by purchase many years ago at Madras. The propodus of 

 the larger first leg in this specimen is 23 mm. in length. 



The material obtained in the Chilka Lake consists only of a solitary large leg 

 belonging to the first pair and of two small and immature individuals. 





A. M.-Edw. 



Fig. 31. — Callianassa (Callichirus) maxima, 



a. Second peraeopod. d. Fifth peraeopod. 



b. Third peraeopod. e. Third maxillipede. 



c. Fourth peraeopod. /. Smaller peraeopod of first pair. 



The large leg bears a close resemblance to that of the complete individual from 

 Madras (pi. xiii, fig. 4) but the lower border of the merus is armed with large ir- 

 regular spinules (the proximal one of the series taking the form of a bilobed tubercle) ; 

 the tubercles on the upper edge of the dactylus, near the base, are more prominent 

 and the surface granulation is in most places more scanty. The last feature is doubt- 

 less correlated with age; the chela found in the Chilka Lake evidently belonged to a 

 smaller specimen than that from Madras, the propodus being only 17 mm in length. 

 The teeth on the inner edge of the dactylus are closely similar to those of the Madras 

 specimen, but the series near the tip consists only of four teeth. 





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