BELONGING TO THE GENEKA BKADYA AND ECTINOSOMA. 421 



branches were ahvays 3-jointecl. The labium iu Ijoth Bradya and Ectinosoma is 

 frequently in the form of a hook-like process. 



Bradya typica, Boeck (1872). (PI. 35. figs. 1, 11, 11, 22, 26, 32, 39, 44 ; PL 36. 

 figs. 1 and 12.) 



1872. Bradya typica, Boeck (2), p. 15. 



1880. Bradya typica, Brady (3), vol. ii. p. 17, pi. xxxviii. figs. 1-10. 



1893. Bradya tyjncUj I. C. Tliompsou (16), p. 22, pi. xix. figs. Sb-c. 



Description. Length '8 mm. (-3^ of an inch). Body moderately robust, fusiform ; 

 forehead produced into a short, narrow, but distinct rostrum, which reaches to about the 

 second joint of the antennules. Antennules very short, stout, and 8-jointed ; the first 

 three joints are subequal and longer than the others, as in the annexed formula, which 

 shows the approximate j)roportional lengths of all the joints ; — 



No. of the joints, counting from the head : 1 . 2 . P) . 4 . 5 . 6 . 7 . 8 

 Proportional lengths of the joints : 77t)2yy43 



The secondary branches of the antenna? are rather longer and more slender than the 

 primary branches, and 3-jointed, the middle joint being very small (PI. 35. fig. 14). 



The mandibles are stout and armed at the truncate apex with a number of slender 

 teeth ; mandibular palp well developed, having the basal joint robust and furnished with 

 several plumose sette at the apex in addition to the two setiferous secondary branches 

 (PL 35. fig. 22). 



Anterior foot-jaws stout, the first two joints large and subequal, the last three very 

 small (PL 35. fig. 26). 



The end-joints of the posterior foot-jaws are very small ; two elongate but unequal 

 seta? sjn'ing fi-om the inner distal angles of the first joints, while the second joints are 

 each provided with a row of small teeth that extend from the lower proximal angle 

 obliquely across tlie joint to the upper distal angle ; a plumose seta also springs from the 

 lower distal angle; the small terminal joint forms the base of a stout, elongate, and 

 slightly curved setose spine, and a spiniform plumose seta springs from the inner margin 

 of the same joint (PL 35. fig. 32). 



First four pairs of swimming-feet moderately stout ; outer branches of the first pair 

 considerably shorter than the inner branches ; in the fourth jjair both branches are about 

 equal in length (PL 35, figs. 39 and 44). 



The fifth pah" are small ; the short produced interior portion of the basal joint, which is 

 about as broad as long, bears two apical setae — the inner one very long, spiniform, and 

 slightly plumose, the other shorter and more slender; a moderately long and slender 

 seta springs from the slightly produced outer portion of tlie same joint ; secondary joint 

 small, subquadrangular, and furnished with three slender setie, the two inner ones being 

 very long, while the other is much shorter (PL 36. fig. 1). 



Caudal stylets short, and about equal in length to the last abdominal segment (PL 36. 

 fig. 12). 



56* 



