PHYLLOPOD CRUSTACEA 



49 



Strcptoccplialus dichotoinus Baird 



1860 Strcploccphalus dicholoinus Baird. Proc. Zool. Soc. London. 28:445 



1900 Streptoccphaliis diclwtoiims Sars. Arch. Mat. Naturvid. 22(9) :4 



Localities: Madras Presidency: *Madra.s, Spur Tank. 10 c? , 9 5 , N. Annandale. III-ll. 

 *Tanjore (S. India). 1$ , 1 5 , N. Annandale. 27-X-ll. 



United Provinces: *Baraunda Tank, Mirzapur. 1 1 c5 , 5? (juvenile), Mrs. 

 N. M. Johnstone. 15-VIII-13. 



Mysore: ^Bangalore (India). 1 c5 , 1 9 , N. Annandale. 13-X-lO. 

 Reported from: India (Baird); Calcutta (Alcock ) ; Shevaroy (Stevaroy) Hills (Sars). 

 Type : Ubi ? 



FiciiiRF. l2.Strcl'tuccl^halux diihuloiiiiis. A, left liand of Madras spur tank <? from outer side (X ll.d)- 

 B, head of Tanjore $ from in front. C, head of Madras 9 from in front. (B and C X9.9). 



(There are also about a dozen 9 9 from Mirzapur, collected by Mrs. N. M. Johnstone, 

 which may be of this species or of S. simplex, as the females are indistinguishable. This is 

 by no means rare among the Anostraca — for example, no distinguishing marks have been 

 reported which allow of the separation of the 9 9 of any of the numerous species of 

 Branch ipodopsis. ) 



Sars' redescription of this .species is so very complete that it will be unnecessary to dis- 

 cuss it very fully. A few points of interest have been observed, however, because of the 

 larger collections from a more wide area that have been available to me. 



The species in general is very like .9. simples, differing mainly in the structure of the 

 2nd antennae of the S , the middle joint of which usually Ijears proximally 4 fleshy processes, 

 though the S from Bangalore and one of those from the Madras Spur tank have only 3 as in 



