48 University of Michigan 



into three transverse rows of large polygonal areas, of which 

 the most caudad are incomplete, only the anterior halves being 

 present; six areas in each series. From caudal edge of meta- 

 zonite project six larger tubercles directly caudad, one tubercle 

 from each area. Each area of the two anterior rows also 

 with a less conspicuous central tubercle among the smaller 

 granules. Tubercles of margin of keels larger, more or less 

 directed caudad of ectad, serriform, the most caudal largest, 

 particularly large on the poriferous segments on which it is 

 confluent, with one or two preceding tubercles to form the 

 large poriferous prominence on which the pore opens below 

 the upper edge, a nodule, the tip of a fused tubercle, lying 

 just over it. (See PI. i8. Fig. 124. j Sides obscurely granu- 

 lar. Second, third and fourth tergites with three marginal 

 tubercles or teeth, of which the one at the anterior corner is 

 smallest; the caudal series of tubercles as in the more caudal 

 segments, but only one series in front of this. Legs not 

 granular. 



Collum acutely angular on each side, a tubercle at apex, 

 margin convex each side of this angle. Six tubercles along 

 caudal border, and tw'O rows of rather obscure tubercles far- 

 ther forward, the surface otherwise densely granular. (PL 

 18, Fig. 123.) 



Sternal spines present larger than those of corresponding 

 segments in other species, but the most caudal ones not larger 

 than the others, all being curved and subecjual excepting- those 

 of eighth and ninth segments, the most anterior ones present,, 

 which are reduced. (Sec PI. 18. Fig. 125.) 



Length, about 16 mm.; width, 2.5 mm. 



Colombia: San Lorenzo. Two females of 19 segments 

 and two younger specimens taken in forest at 4,000 feet ; July 

 14. 1913; l\ M. (;aige. Holotype, M. C. Z., 5,136. 



