NEW SPECIES OF BRAXCHIXECTA LYNCH 



561 



inner aspect of the basal article of the male antenna (Daday de Dees, 

 1910, fig. 121, p. 157, figures B. orientalis with a roughened tubercle 

 ["tuberculo rotundato, scabroso"] on the basal article of the antenna, 

 which, however. Bond, 1934, p. 34, describes as a "slight setulose or 

 smooth bulge"). 



Only two species of Branchinecta resemble B. gigas, namely, B. 

 ferox (Milne Edwards) and B. orientalis Sars. B. ferox differs 

 from B. gigas in that the antenna of the male has a large roughened 

 tubercle on the inner aspect of the basal article; the antenna of the 

 female is short, scarcely longer than the antennule, and flattened; 

 the ovisac is elongate-fusiform, and both sexes have a narrow tri- 

 angular process on the posterior end of the labrum. 



B. orientalis Sars differs from B. gigas in the following features: 

 The basal article of the antenna of the male is relatively shorter 

 and stouter; the antennae of the female are short, about the length 

 of the antennule, broad, flat, and ending in a short lateral point 

 separated by a notch from the broad part of the antenna ; the ovisac 

 is fusiform; in both sexes the posterior end of the labrum bears a 

 vertical lamella, the cercopods are fringed with setae nearly to the 

 base on both sides, and the lamina branchialis is roughly quad- 

 rangular in shape. 



LITERATURE CITED 

 Bond, R. M. 



1934. Report on phyllopod Crustacea (Anostraca, Notostraca, Concho- 

 straca) including a revision of the Anostraca of the Indian Empire. 

 [Tale North India Expedition.] Mem. Connecticut Acad. Arts 

 and Sci., vol. 10, art. 5, pp. 2&-62, 19 figs. 

 Daday de De^^s, E. 



1910. Monographic syst^matique des Phyllopodes Anostraces. Ann. Sci. 

 Nat., ser. 9, vol. 11, pp. 91-489, 84 figs. 



EXPLANATION OF PLATES 



Plate 77, figures 3 and 4 ; plate 78, figures 3 and 4 ; plate 79, figures 

 3 and 5; and plate 80, figures 2, 5, and 6 were drawn with the aid 

 of a camera lucida. The remaining figures were made without the 

 aid of drawing apparatus but with all proportions conforming to 

 careful measurements of the specimen. 



A'bT)rev lotions 



a. = Area of attachment 

 thoracic appendage. 

 &r. Z.= Branchial lamina. 

 hr. s.= Branchial sac, or gill. 

 0.5^.= Cement gland. 

 end. = Endopodite. 

 c«#.i = Endite 1. 

 ent. o = Endite 5. 



of first 



ea7.=Exopodite. 

 ?.=Labrum. 

 ma?. 2=Second maxilla. 

 na. p.=Nasiform process of labrum. 

 n. o.="Neck organ." 

 ov.=Ovary. 



t. fl'.=Lateral border of thoracic 

 groove. 



