10 Mr. Gilbert J. Arrow's Contribution to the 



atis, angulis anticis acutis, posticis rectis, basi marginato; elytris 

 longe ovatis, distincte maiginatis, humeris prominentibus : 



^, clava antennali dilatata, tibiis 4 posterioribus apice incurvatis, 

 abdominis segmento ventrali primo medio tuberculato, quarto 

 tuberculis duobus baud approximatis postice armato. 



Long. 11 mm.; lat. max. 5'5 mm. 



Hah. Uganda : Entebbe {C. C. Gowdey, Oct.), Masaka 

 {Gowdey, Nov.); Angola {Dr. Welwilsch). 



This has the closest resemblance to T. longanimis and 

 appendiculatus, the pale markinos being almost identical, 

 except that the antemedian bar is less distinctly produced 

 forwards externally. As in T. longanimis, the sides of the 

 pronotum are red. The pronotum is relatively small, with 

 its sides parallel, the front angles sharp and the hind angles 

 right angles, and the base strongly margined. The elytra 

 are not very convex nor very shining, the shoulders are 

 prominent and the lateral margins a little wider than in 

 T. appendiculatus. The male has a rather broad club to the 

 antenna, the first ventral segment has a small but sharp 

 tubercle at the middle of its hind margin and the fourth 

 is impressed in the middle and bears tAvo rather widely 

 separated tubercles at the hinder edge. 



Trycherus flavipes, sp. n. 



Niger, sat nitidus, pronoto, antennanun articulo ultimo, tarsis 

 corporeque subtus laete fulvis, elytrorum fascia posthumerali 

 undulata, ad suturam interrupta, maculaque apicali antice bifida 

 pallide flavis ; modice elongatus, pronoto subtiliter punctato, lateri- 

 bus fere parallelis, anguste marginatis, postice paulo contractis, 

 angulis anticis prominentibus, posticis vix acuminatis, basi margin- 

 ato ; elytris modice convexis, distincte et crebre punctatis, bumeris 

 prominentibus : 



(^, tibia intermedia apice paulo uncinata, segmento ventrali 

 ultimo baud elongate : 



$, segmento ventrali ultimo elongato, longitudinaliter canalicu- 

 lato, penultimo late impresso. 



Long. 7-8 mm. ; lat. max. 4 mm. 



Hab. S. Nigeria: Agege. 



Several specimens were bred by the late Mr. C. 0. 

 Farquharson, in October 1917, from larvae found feeding 

 upon a peculiar fihny lichen on trees inhabited by ants 

 of the genus Cremastogaster. 



