MONOMOBIUM 201 



3 . Head posteriorly emarginate. 



Length 1 -5-2 mm M. dichroum, p. 202. 



b 3 . Head posteriorly not emarginate. 



Length 2-5-3 mm M. pharaonis, p. 202. 



lt~. Head, thorax and abdomen more or 



less brown. 



:i . Antennae comparatively long, scape 

 reaching beyond top of head ; 



sides of head very convex M . 'onr/i, p. 203. 



b n . Antennae shorter, scape not attain- 

 ing top of head ; sides of head 

 straighter, not so convex. 

 a 4 . Pro-mesonotum very convex, not 



margined at the sides M. schurn, p. 203. 



6 ; . Pro-mesonotum flatter, distinctly 



finely margined at the sides . . M. icrouyhioni, p. 2C4. 

 V. Pro-mesonotum short, about as broad 



as long- M.fossitltttum, p. 20-~>. 



5. Seen from above 2nd node not broader 



than 1st ; nodes subequal. 

 '. Head in front distinctly broader than 



posteriorly M. zndicum, p. 205. 



b'. Head as broad posteriorly as in front. . M. ytyciphihtm, p. 20<>. 



B. Head not rugulose and opaque, but more or 

 less smooth and shining. 



a. Head nearly square, almost as broad as 



long M. abernnis, p. 207. 



b. Head rectangular, distinctly longer than 



broad. 

 a'. Antenna 11 -jointed. 



a~. First node of pedicel higher than 2nd 



node, cuneiform M. orientate, p. 207. 



b~. Fhvt node of pedicel not higher than 



2nd node, not cuneiform, globose . . M. atomus, p. 208. 

 b'. Anteuna3 12-jointed. 



a~. Scape of antennae extending beyond 



top of head. 



a 3 . Thorax convex above, not sub- 

 margined M. saf/ei, p. 208. 



b 3 . Thorax somewhat depressed and 



flat, laterally submarined M. destructor, p. 20i>. 



b-. Scape of antennae not extending be- 

 yond top of head. 

 a 3 . Second node of pedicel not broader 



than 1st node. 



a*. Head and thorax dark chestnut- 

 brown, abdomen black. Length 



1-5-2 mm M. minutum, p. 210. 



b*. Head and thorax reddish vellow, 

 abdomen dark brown. Length 



2-5-3 mm Af . f/rficHlinwni, p. 210. 



b 3 . Second node of pedicel broader 

 thau 1st node. 



fl . Length 1-5-2 mm M. floricola, p. 21 . 



b*. Length 3-3'7 mm M- tfitrnode, p. 211. 



