2i8 Records of the Indian Museum. [Vol. XIII, 



Leander siylijerus is closely related to L. carinatus, Ortmann ; 

 the distinctions between the two species are enumerated below. 

 L. japonicus, Ortmann, which I have not seen^ is an allied species, 

 but according to Miss Rathbun {lac. cit., 1902, p. 51) is to be dis- 

 tinguished by the absence of dorsal spines on the distal part of the 

 rostrum, by the lower number of inferior teeth (4 to 6), by the 

 greater length of the sixth abdominal somite and by the longer 

 carpus of the second peraeopods. 



The specimens of Leander styliferus in the Indian Museum 

 are from the following localities: — 



3 2 4 1-50 



10 



3^2 . /W. T. Blanford, ].' 



5^2-5 1 ( Gangetic deha ( many lo- ) Wood-Mason, J. T. ( j^^^ 



10 I cahties). ] Jenkins, R. Munro, T. I •' ' 



»7 27"9 ; \ Southwell, S. Kemp. / 



10 '^ 



2-5^ Chittagong (edge of river) N. Annandale, S. Kemp. Many 



young. 



^r^ Mouth of Yc R., Burma ' Investigator.' Two. 



9.'5 2R 



0.5 2 9 



10 

 9 .'5 3 O 



1531 

 1 O 



Mouth of Rangoon R., 



Burma ... .. 'Investigator.' Several 



young. 



Rangoon market ... N. Annandale. Many. 



Haingyi I., Tennasserim ' Investigator.' ° One. 



Green I., Amherst, Ten- 

 nasserim ... ... ' Investigator.' Several. 



5^p. Mergui ... ... ). Anderson. Two. 



Specimens from the west coast of India as a rule have the 

 rostrum markedly longer than those from the Bay of Bengal. 



The species was originally described by Milne-Edwards from 

 " I'embouchure du Gauge." It is recorded by Henderson from 

 Karachi, the Gangetic delta, the Gulf of Martaban and Mergui. 

 Miss Rathbun has also recorded it from Karachi, and Nobili has 

 reported specimens from Bombay and a single individual from 

 Borneo. 



The species occurs in water that is both salt and brackish and 

 has been found at Diamond Harbour in the Gangetic delta in a 

 freshwater creek. As in the case of L.tenuipes, with which it is 

 frequently found, the species is probably migratory, entering estu- 

 aries and tidal rivers at the close of the monsoon. Capt. R. 

 Munro, to whom we are indebted for numerous specimens, notes 

 that in 1912 at the mouth of the Hughli river " the first appear- 

 ance of cold weather shrimps " was in August. 



