498 Mr. Gilbert J. Arrow on Cliaracters and Relationships 



Hal. German E. Africa : Masailand, Kilimanjaro. 



In the British Museum. 



P. nitidus is another species very difficult to distinguish 

 from P. Beccarii, but the puncturation is a little finer and 

 the surface therefore rather more shining. The form also 

 appears to be a trifle more elongate. In the male the pro- 

 thorax is a little less dilated, the sides rather more rounded 

 in front and less divergent behind. The examination of 

 the genitalia, however, is tlie only means of discrimina- 

 tion which I have found really conclusive. To facilitate 

 comparison I give here a short description of this part in 

 the male of P. Beccarii, Har., of which by Dr. Gestro's 

 kindness I have been able to examine the original 

 specimens : — 



Forcipis lobo dextro longo, paulo contorto, apice lanceolate, basi 

 paulo inflate, lobo sinistro sat brevi, basi fortiter dentato. 



Phaeochrous mashunus, sp. n. 

 P. madagascariensis, Pering. (nee Westw.), Trans. S. Afr. 

 Phil. Soc, 1900, p. 497. 



Nigro-piceus, parum nitidus, ore, pedibus, corporeque subtus 

 ferrugineis ; prothorace sat distincte irregulariter punctato ; elytris 

 punctorum seriebus tribus longitudinalibus quadruplice instructis, 

 interstitiis creberrime confuse punctatis, tibiis anticis tridentatis et 

 sat minute serratis : 



^, mandibulis antice prominentissimis, subtruneatis, capite 

 sat leviter punctato, prothorace sat late marginato ; forcipis lobo 

 dextro breviter lanceolato, acutissimo, sinistro latissimo, basi minute 

 dentato. 



Long. ll-5-12'5 mm. Lat. max. G-6-5 mm. 



Hal). Mashonaland : Salisbury {G. A. K. Marshall); 

 Nyasaland (Thelwall). 



Mr. Peringuey has described this under the name of 

 P. madagascariensis, but although very like that (and all 

 the species of Phaeochrous are extraordinarily alike) it still 

 more closely resembles P. Beccarii, Har. It is a little 

 smaller than the Madagascan species, and the puncturation 

 is less fine and regular. From P. Beccarii it is distin- 

 guishable by the less distinct quadruple rows of punctures 

 upon the elytra, which are a little more shining in the 

 male. The mandibles in that sex are also more 

 prom.inent and more quadrate externally. 



