and Asiatic Species of Hapalochrus. 179 



[Heterolaius, gen. nov.] referred to Laius, Guer. — L. in- 

 flaticornis, Fairni. [type], L. kourgeoisi, Gestro, and L. lati- 

 pennis, violaceipennis, and spinicoxis, Pic — are extremely like 

 the same sex of various species of the present genus, but they 

 are separable therefrom by the subequally elongated, narrow, 

 second and third joints of the antenna?, these two joints 

 being greatly dilated and subconnate, and the anterior tarsi 

 simple, in the males. Collops velutinun, Gerst., from Zan- 

 zibar, type ? (1873), referred to Hapalochrus by Fairmaire 

 in 1887, must be a true Laius. In the descriptions here 

 given, the short node at the base of the second antennal 

 joint is not counted as a true joint, the antenna} being 

 treated as 10-joi uteri, as in Laius and Collops. 



Amongst the African Hapalochri we find groups of species 

 represented by H. nobilis, sjbstedti, testaceicomis, appendi- 

 cifer, amplipennis, &c, respectively, with a common, abun- 

 dant, primitive type of ? , and a series of $ $ confined to 

 particular localities with diverse, constant, differential 

 characters, which, in the present state of our knowledge of 

 these insects, must be regarded as of specific value. 



Key to the African Species*. 



6 6- 



1 (22). Anterior tarsal joint 2 prolonged over 3, the 



apical portion sometimes broad and nigro- 

 pectinate at tip, sometimes narrowed and 

 claw-like. 



2 (3). Anterior tibiae produced at the inner apical 



angle into a very long, curved, simple or 

 asymmetrically bifurcate spine ; antennae 

 flabellate : intermediate tibiae greatly 

 swollen ; prothorax metallic (maculate in j 

 of No. 1) ; elytra maculate or unicolorous. 

 [Subgen. Hapalochrops, Bourg.] Species 1, 2. 



3 (2). Anterior tibiae not produced at the inner 



apical angle. [Hapalochrus, Er., s. str.] 



4 (7). Elytra maculate ; intermediate tibiae greatly 



swollen, penicillate in No. 3. 



5 (6). Antennae flabellate or pectinate (intermediate 



femora in No. 3 with a large, oval, metallic 



area beneath at base) Species 3, 4. 



6 (5). Antennae serrate ; intermediate femora with- 



out fovea Species 5. 



7 (4). Elytra not maculate. 



8 (9). Anterior femora toothed at middle (Nos. 6-10) 



or base (No. 11) ; intermediate tibiae slender ; 



antennas pectinate Species 6-11. 



* Males of H. nobilis, cinerascens, caudatus, dollmani, and scabrosus 



unknown ; H. dollmani (No. 58) omitted from Table. 



12* 



