1908.] Catalogue of the Coleoptera of South Africa. 705 



part of those of Tcrmes trinervius, and possibly others, perhaps for 

 foraging purposes. It was in a mound originally built by T. trinervius, 

 but jointly occupied by Hodotermes and the true ant Plagiolepis 

 custodicns, Sm., that I found among the latter, which harbours 

 probably more mess-mates than any other African ant, the rare 

 Cremastochilid Trichoplus schaumi. This does in all probability 

 account for the habitat as recorded by Dr. L. Schultze. I may add 

 that the first time I met with the Cremastoschilid, I was not sure 

 whether it was a " commensal " of Hodotermes, or of Plagiolcjris 

 (cf. Ann. Soc. Entom. Fr., lxix., 1900, p. 67), but I am sure now 

 that it is of the latter. — L. P. 



Trichoplus agis, Kolb., 

 Loc. cit., p. 124. 



"Like the preceding species, a little larger, moderately shiny; 

 clypeus bi-carinate longitudinally, the carinas set close to each other 

 diverging behind ; prothorax five times angular, broadly punctate, 

 ampliate in front, the ampliated part more broadly rounded laterally, 

 sinuate behind and bearing a large, broad, ovate dorsal fovea closely 

 punctate, deeply excavated in front, simple behind, scutellum strio- 

 late, longitudinally carinate in the middle ; elytra with the shoulders 

 most distinctly prominent, obliquely and longitudinally striolate, 

 slightly sub-seriately punctulate, longitudinally unicostate as in the 

 preceding species ; legs also similar but with the tibiae shorter ; 

 mesosternum highly carinate ; metasternum with a median 

 octangular area attenuate in front, costulate line-like obliquely 

 and longitudinally, and carinate laterally ; penultimate dorsal 

 abdominal segment (propygidium) carinulate longitudinally in the 

 middle, interval between the propygidium and the pygidium simple 

 (not spongy-pilose), pygidium obliquely slanting on the upper side, 

 invisible beneath, moderately large, glabrous. 



Length 10^ mm. 



Hab. Found in Namaqualand (Steinkopf) with T. cepytus, also in 

 the mound of Hodotermes viator." 



My previous remarks on the occurrence of these degenerated 

 Cetonids apply also to this species. — L. P. 



