194 Mr. G. J. Arrow on 



sections of the genus and in species nearly related to 

 winged forms. 



The excellent Monograph of the Brachynides published 

 by Chaudoir in 1876 (Ann. Soc. Ent. Belg., torn. 19, p. 16) 

 still retains its usefulness, although the number of species 

 known to him will probably prove ultimately to be only a 

 fraction of those existing. I have therefore considered it 

 sufficient, in order to bring our knowledge of the genus 

 Phero'pso'plms up to date, to describe the new species known 

 to me, and to give a few notes in those cases where 

 increased knowledge has rendered Chaudoir's work in- 

 adequate. 



For easier identification I shall refer the species de- 

 scribed here as new to their systematic position in the 

 table given by Chaudoir, designating his sections by the 

 name of the first species placed in them by him. 



The British Museum contains five species of this genus 

 from Angola, viz. P. guineensis, Chaud., P. basiguttatus, 

 Chaud., P. angolensis, Erichs., and two apparently new 

 species. The first of these, which belongs to the "fasti- 

 giatus " section of Chaudoir, I propose to call 



P. dimidiatus, sp. n. (Plate IX, fig. 8.) 



Testaceus, elytris abdomineque nigris, capite prothoraceque 

 equaliter testaceis, immaculatis, hoc angusto, lateribus lsevissime 

 sinuatis, antice nonnihil rotundatis, postice valde approximatis, disco 

 profunde sulcato ; scutello testaceo ; elytris sat longis, costis valde 

 elevatis, nitidis, humeris angulato-rotundatis, lateribus ubiqne leviter 

 curvatis, pectore cum pedibus totis testaceis, mesosterno fusco bi- 

 punctato. *Long. 15-17 m.m. 



Hob. Angola. 



This closely resembles the S. African P. fastigiahis, L., 

 but the thorax is differently shaped, being longer and more 

 narrowed behind. The meso- and metasternum in that 

 insect are black except in the middle, while in P. dimidi- 

 atus they are pale except for an inconspicuous black spot 

 on each side opposite the middle coxae. 



A specimen received from Mr. H. S. Gorham was taken 

 300 miles from the coast of Angola, and a second from 

 Quanga is in Mr. W. L. Distant's collection. 



* The length in this and the succeeding new species is measured 

 to the end of the elytral suture. 



