29 



Agonatopiis gen. nov. 



Distirguished from Chalcogonatopus by having only five joints 

 to the maxillary palpi, two before and three beyond the genicula- 

 tion. 



Table of species of Agonatopus. 



1 (8) Pronotum with strong constriction, dividing it into 



two lobes, the posterior not compressed, cariniform. 



2 (5) Lamellate denticles of fifth joint of front tarsi be- 



neath not reaching back to the articular cavity. 



3 (4) Abdomen ferruginous or testaceous. ..-J. pallidicoriiis. 



4 (3) Abdomen mostly l:)lack...-J. pallidicoriiis var. dubiosus. 



5 (2) Lamellate denticles of front tarsi almost reaching the 



articular cavity of the fifth joint beneath. 



6 (7) Insect almost wholly ferruginous. .. ..-J. fcmigincns. 



7 (6) Insect largely dark brown and black. ..^. piccscens. 



8 ( I ) Pronotum compressed into a median carina on the 



posterior part, which is only faintly separated from 



the anterior A. hetcrothorax. 



A. iiiiiitidus was bred after the construction of this table, 

 where it would be placed with A. paUidicornis var. diibiosiis, 

 from which the dull abdomen would at once separate it. 



I. Agonatopus pallidicoriiis sp. nov. 



Yellowish-lirown or testaceous, the abdominal petiole black, 

 tips of the front femora, the thin part of the hind and intei- 

 niediate ones pale! yellow, the tips of the two latter being 

 slightly, but noticeably, darkened. Mandibles yellow, the teeth 

 dark, reddish or brown. Antennae concolorous or almost so, 

 sometimes subinfuscate apically, but never black. Plead dis- 

 tinctly concave, long above, not at all strongly transverse, com- 

 pared with many other forms, the inner margin of the eyes 

 strongly convergent anteriorly, the surface shining, the sculpture 

 being extremely feeble. Antennae with the third joint rather less 

 than twice the' length of the fourth, the latter about four times 

 as long as its greatest width. Pronotum with strong transverse 

 construction ; behind which it is very smooth and shining ; mesono- 

 tal constriction dull, longish ; propodeum elongate, almost evenly 

 curved above in profile, the sculpture on the disc very fine, the 

 surface in some examtples being somewhat shining there, but not 



