1918 1 F. 11. (Jravely : I'dssalidae oj ihr WmltJ. 73 



Pentalobus sansibaricus (iiiimld). 



I'of<Kalii.s saiisibaririi". Harolil, 1880, pp. 202--2(i:{. 



Five .'^petinicMis from Zanzibar, one from Abyssinia, one from Abetefi. one from 

 J{liombom]i (Sierra l^eone), a number from Dar-es-Salaam, an»l .six .said to come from 

 ]iolivia. Length i6-5-275 nun. 



/'. sannibariciis differs from 1'. kliiyi only in iiaving tiie auteunal lamellae .somewhat 

 longei . in having the upper surface of the head thickly punctured more or les.s all over, in 

 having the me.sosternum smooth and poli.shed, with well <lefined .scars, and in having the 

 po.sterior intermediate areas of the metasternum coarsely punctured. The central plate of 

 the metasternum is lightly and sparsely punctured in small specimens. 



Pentalobus punctipectus (Kaup). 

 Fij.'. VI 11. :', |>. Til. 

 Lepldvlnx piDictipeclus. Kaup. ISfiBf/. ]>. II. 

 One specimen from (ial)oon. Length iS mm. 



This species ditTers from small specimens of the last in having a median pair of .secondary 

 marginal tubercles instead of a single median tubercle, and in having the central plate of 

 the metasternum less sparsely covered with stronger punctures. 



Pentalobus barbatus (Fabricius). 



Passahis barbalus. Fal)iitiu>. Ibtil. p. -M. 



A large number of specimens from Abetefi, Ashanti ; also a few from Amu. Ashanti : 

 Gaboon ; Old Calabar ; Aquapim, Guinea ; Barombi, Cameroons ; and Angola : all 23-29 

 mm. long. Also one specimen from East Africa, 20 mm. long, and two from FrancevUle, 

 French Congo, 17-19 mm. long, between which and the larger forms I am unable to find 

 any .structural difference. 



This .species differs from P. punclipeclis in having five antennal lamellae, all of them 

 very long and slender : and in having the central area of the metasternum unpunctured. 



Pentalobus parastictus (Tmhoff). 



Piis.saliis jtaifislirlii.s. ^n\\\i>(\. IM.'i. p]i. I 7 I - 1 T_' 



One .specimen from A(|uapim, Guinea, and one from Barombi, Cameroons Interior. 

 Length 2 I -24 mm. 



The punctures on the head are somewhat sliailow, and the anterior margin of the head 

 is lightly e.xavate medially, but has no median tut)ercles. The puncturea on the central 

 area of the metasternum are more or less concentrated beside the posterior margin. The 

 transverse punctures of the lateral grooves of the elytra are more or less obsolete in the two 

 outermost of these grooves, and all the grooves except the fifth and sixth tend to unite in 

 a matt depression behind. Tn other respects this species resembles P. punctipectis. 



X 



