Occasional Papers of the Museum of Zoology 15 



Length of largest female, near 30 mm. ; width, 3 mm. 



British Guiana: Labba Creek, First Timber Landing, Clay 

 Jmigle. In rotten logs. Aug. 12, 1914; F. M. Gaige. One 

 female taken under fallen leaves in a tree clump. Holotype, M. 

 C. Z., 5,064. 



Stctnjiiiulus sp. 



Colombia: San Lorenzo. At 7,600 feet on July 19, and 

 at 8,000 feet on July 23, 19 13. Five small females of fifty 

 to fifty-two segments taken in bromeliads on the ground. 



Prostemiulus heterops, sp. nov. 

 PI. 9, Fig. 61 ; PI. 10, Figs. 62 64 



Color of body dark brown, with covered region of pro- 

 zonites ])ale and tbe posterior border of metazonites transpar- 

 ent, so that the light color of prozonites shows through. No 

 definite markings. Legs brown, the antennae darker. 



In the type there are two ocelli on the right side and three 

 on the left in a sul)verLical series, the dorsal one largest. (See 

 PI. 10, Figs. 63 and 64.) 



Gnathochilarium as shown in PI. 10, Fig. 62 



The lower anterior corner of the collum on each side widely 

 rounded, with the posterior corner much more narrowly 

 rounded. 'I'wo long true striae or sulci on each side. (See 

 PI. 10, Fig. 03.) 



Striae of following segments disposed about as usual. The 

 upper striae very oblique. The finer impressed lines of sur- 

 face of collum and all other segments are longitudinal, fine 

 but distinct, and numerous. Serration as shown in PI. 9, 

 Fig. 61. 



Setigerous tubercles of last tergite 3-(-3 as usual. 



