(Page 260) 



2. Posterior margin of pronotum not margined, its hind corners less round- 



ed. L. 2.5 mm 2. PI. complanata Er. 



3. Posterior margin of sixth free ter^jite in the o at middle with a tri- 



angular tooth, and at each side with and equal long, fine spine. 

 L. 2 mm 2. Pi. pumilio 5r. 



Posterior margin of sixth free termite in the O^at middle with three- 

 five small teeth and at each side a little longer, slightly in- 

 v.ardly curved spine, on dorsal side furthermore with two small 

 granules. L. 2-2.5 mm 4. P l. tachyporoides ""altl. 



Posterior margin of the sixth free tergite in the (T at middle with 



three thorn-shaped teeth and at each side a little longer spine, 



which is curved inwardly, both fifth and sixth tergite on dorsal 



side with two small granules. L. 2 rnm 5. PI. atrata Sahib. 



1. PI. humilis lir. 



(Erichs. vien. Spec. Staph. 196; Kraatz Ins. D. II, 332; Thorns. Skand. 

 Col. Ill, 103; Muls. et Rey Bre'vip. 1871, 114; CJanglb. Kaf. M. II, 296). 



A rather broad and flat species, and in combination with form of the 

 body principally identified by the entirely dull head and pronotum, and 

 the finely yet distinctly margined posterior margin of the latter. 



Black, very finely, rather densely gray-haired, dull, abdomen with 

 greasy gloss, the elytra yellowish-brown, at base and on sides most often 

 dark; antennae pitch-brownish, their base, the mouth-parts and legs brown- 

 ish yellow. 



Head and pronotum particularly densely and finely punctated, shagreen- 

 ed in surface and therefore dull; the head broad, yet considerably narrower 



-44ft- 



