( 309 ) 



ON SOME OF THE AFRICAN LONGICOllNS DESCRIBED 

 BY HOPE AND WESTWOOD. 



By K. JORDAN, Ph.D. 



PROFESSOR E. B. POULTON kindly lent me the African Longicorns of 

 the Hope Department for some time, so that I was enaliled to compare them 

 with the specimens in the collection of the Tring Museum and take notes on 

 the types contained among the material of the Hope Department. I find that 

 some of Hope's species have been wrongly identified by subsequent authors, myself 

 included. It is especially his paper in Atui. Xnt. Hist. 1843, p. 36fi, "On some 

 New Insects from Western Africa," which has given rise to much uncertainty, 

 owing partly to the shortness of the descriptions and partly to the erroneous 

 [ilace assigned to some of the insects. The following list gives all the Longicorns 

 named in that paper. 



1. Stenodontes downesi. 



MaUodon downesii Hope, /.'■. p. 366. d. 47 (1843) (Fernando Po ; Cape Palmas). 



The well-known common Prionid. Hope mentions Mallodon picipeimis and 

 raddoni as being taken at Sierra Leone ; these are nomina in coll. of specimens 

 of doici/esi, which varies a good deal. 



2. Acanthophorus palini. 



Aranthoph'irns palinii Hope, I.e. no. 48 (1843) (Sierra Leone). 



This is the insect which Waterhouse figures in Aid to the Identification of 

 Insects, p. 25, t. I6T, fig. 1 (1888?). 



3. Acanthophorus longipennis. 



AcantJiophvriis hingipennis Hope, l.r. no. 4'J (1843) (Sierra Leone). 

 Acanthnphunis iiierjalops White, Cat. Brit. Miis. vii. p. 1.5 (1853) (Fernando Po). 



Lameere, Ann. Mas. Congo, Zool. iii. Longic. (19u3), treats the name as a 

 synonym of yolo/us Dalm. (1817). The type-specimen of the name (nymotype), 

 however, which is a female, is very near to megalops White (1853), and in 

 my opinion the same species. The puncturation is much more dispersed than 

 in other AcantliophorHS ; the femora are quite smooth ; the tibiae bear only 

 scattered punctures and, in the lateral depression, a few setiferous granules. 

 The ape.v is dorsally emarginate in all the tibiae, each angle of the sinus being 

 j)roduced into a tooth nearly as in A. palini. The antennal segments are not 

 channelled. 



4. Phyllarthrius africanus. 



Pki/lliirthriiis africanus Hope, I.e. no. 50 (1843) (Sierra Leone). 



The antenna is described as having only ten segments. What Hope called 

 the second segment is really the third, the second being quite short. The 

 pronotum has a depression on each side, much as in Pti/cholaemus. The elytra 

 are cylindrical, nearly as in Ptirpuricenus, the apical margin of each being 

 rounded. The black ajiical area of the elytra measures about 2 mm. 



