264 



ENTOMOLOGICAL NEWS. 



[June, '12 



Having recently had an opportunity to examine a topo- 

 typic female specimen of Karsch's T. gnu, I find the Luebo in- 

 dividuals to be quite distinct, the female sex of the new form 

 differing in the characters previously noted (vide supra} and 

 also in the strongly compressed frontal costa, the margins of 

 which are contiguous through nearly their entire length. 



The female which we have associated with the male type 

 shows some affinity with T. quagga Karsch and T. depressi- 

 frons Bolivar, both known only from the female sex, but the 

 coloration, which is of great importance in the Eumastacinae, 

 shows a number of differences. 



$ Size small; form distinctly compressed; surface of dorsum of 

 thoracic and proximal abdominal segments finely rugulose. 



Head with the dorsum considerably elevated dorsad of that of the 

 pronotum, when seen from the side subobtuseangulate at the highest 

 portion of the eyes, fastigium decidely declivent, rounding into the de- 

 cidedly retreating facial line, the latter slightly concave ; occiput with 

 distinct median and strongly divergent lateral carinae, the lateral ones 

 contiguous between the eyes and passing into the almost entirely con- 

 tiguous carinse of the frontal costa, the latter very slightly separated 

 for a short distance on the fastigium ; antennae but little longer than 

 the depth of the eye ; eyes very large, moderately prominent. 



Pronotum with the dorsal carina distinct but not elevated; lateral 

 lobes of pronotum about as deep as long, cephalic margin strongl> 

 arcuate ventrad, ventro-cephalic angle obtuse, ventral margin arcuato- 

 emarginate cephalad, ventro-caudal angle slightly produced, well 

 rounded. 



Proximal abdominal segments cari- 

 nate; apex of abdomen strongly re- 

 curved, subinflated ; supra-anal plate 

 with a pair of mesially constricted 

 carinae, apex subtruncate; cerci elon- 

 gate, styliform, apex blunted ; distal 

 ventral abdominal segment bullate, 

 the outline regularly arcuate when 

 seen from the side; subgenital plate 

 elongate, sub-cylindrical, the apical 

 margin slightly produced laterad and 

 regularly arcuate in shape, when seen 

 from the side distinctly depressed 

 distad. 



Thericles macropygia n. sp. Lateral 



view of apex of abdomen, xio. Caudal femora very considerably 



