116 Descriptive Cataloaue [1897. 



Clavigeridce are rare, but they occur in every part of the world, 

 anil are found in ants' nests ; at times, however, they leave the 

 formicaria at sunset, and are found climbing on plants in meadows. 



In Madagascar some of the most curious species live in the nests 

 built in trees by an ant {Cremastogaster spec). I am sure that a 

 methodical and careful search in ants' nests in South Africa will 

 lead to the discovery of many more species than those known to- 

 occur. 



Synopsis of Genera. 

 A 2. Antennse four-jointed. 



B 2. Head broader and rounded at tip, hind margin of the 

 abdominal excavation tridentate ; second and third 

 dorsal segments comparatively large Fustigeropsis. 



B 1. Head more or less acuminate at tip ; abdominal excava- 

 tion simply tuberculate or fasciculate on each side ; 

 second and third dorsal segments small. 



C 2. Abdominal excavation not tuberculate, and having on 

 each side a fascicle of hairs connected with a larger 

 fascicle at the external angle of the elytron, the apical 

 margin of which is only slightly oblique Novoclavigcr. 



G 1. Abdominal excavation having on each side a very strong, 

 long, compressed tubercle fitting in a fasciculated notch 

 on the external angle of the elytra Fitstigerodes. 



A 1. Antennae five-jointed. 



Head short, acuminate in front ; abdominal excavation 

 fasciculate and strongly carinate on each side . . . . Commatocerodes. 



Gen. FUSTIGEEOPSIS, Eaffr., 



Eev. Entom., 1890, pp. 164 and 167. 



Commatoceriis, Eaffr., olim. 



Antennae quadri-articulate, elongate, last joint long, clavate at tip ;; 

 head broader in front and rounded, anterior part of cheeks dilated in 

 a triangular form ; posterior margin of antennae slightly marginate 

 in the middle and fasciculate ; abdomen long, first dorsal segment. 

 deeply impressed at base and tridentate, second and third con- 

 spicuous ; legs somewhat elongate. 



This genus contains only one species. 



Fustigeropsis peringueyi, Eafi'r., 

 Plate XVII., fig. 8. 

 Commatoceriis Periiu/iiei/i, Eaffr., Eev. Entom., 1887, p. 19, pi. i.^ 



fig. 7. 

 Elongate, chestnut brown or rufo-testaceous, sparsely pilose ; head 

 elongate, very finely shagreened, sinuate in front of the eyes, 

 ampliate and rounded in front, deeply foveate on each side ; antennae 



