58 University of Michigan 



of the posterior border two tubercles. Setae as on other ter- 

 gites. (PI. 21, Fig. 145.) 



Second tergite much wider than the cohum, its ends or 

 keels bent forward, the anterolateral corners appearing as 

 thick, rounded tubercles ; the third tergite also bent forward at 

 ends. (PI. 21, Fig. 145.) The following are, as wholes, not 

 bent forward at ends, but with the anterolateral corners 

 strongly produced forward and similarly rounded, these ante- 

 rior processes becoming shorter in going caudad, but project- 

 ing as rounded tubercles on all but the last few. The poste- 

 rior angles on all but the most anterior keels also come to 

 project similarly caudad. Between these two projecting end 

 tubercles on a typical segment are two intervening large mar- 

 ginal tubercles with a large tubercle below the more anterior 

 of them, giving the keel a thick, heavy appearance. Between 

 these large marginal tubercles there are typically four, or 

 indistinctly five, transverse rows of similar but somewhat 

 smaller tubercles, the most anterior row having but two tuber- 

 cles, or, if a fifth row is present, this also with two, this form- 

 ing the second row, the other usually with six each, inclusive 

 of those on keels within marginal ones. Each tubercle bears 

 a large seta and numerous very short, fine setae. (See, fur- 

 ther, PI. 21, Fig. 147.) 



Anal valves granulotubercular ; mesal borders margined. 

 Anal scale trapeziform, the caudal margin straight, with a 

 setigerous tubercle at each outer angle. (PI. 21, Fig. 148.) 



Gonopods of male as shown in PI. 22, Fig. 149. 



Length, near 35 mm. ; width, 5.2 mm. 



Colombia: San Lorenzo. A male and two females from 

 stumps at 4,500 feet; July 5, 1913. 



Also two smaller specimens at 5,300 feet; July 23, 1913. 



A not quite adult male in forest at 4.000 feet ; July 14, 19 13. 



