A Bevision of the Genus Synthocus. 105 



Mashonaland : Salisbury and Marandella's {G. A. K. M.). Mata- 

 BELELAND : Matopos (P. A. Shejjpard). 



Type in the British Museum. 



Allied to S. plagosus, P6r., but distinguished by its strongly 

 angulated thorax, its sharply conical tubercles and its different 

 coloration. 



17. Synthocus stolatus, Pasc. 

 Daulaxius stolatus, Pasc, Trans. Ent. Soc. Lond., 1887, p. 333, 

 pi. xi., fig. 11. 



Long. lOJ-lOi; lat. 6i-6f mm. 



Colour as in S. mashunus, Mshl. 



Prothorax a little broader than long, the sides slightly rounded, 

 with an obtuse subdorsal tubercle, broadest behind middle, 

 evidently narrowed anteriorly and constricted near apex; upper 

 surface rugosely tuberculate in the middle, smoother laterally, with 

 a shallow central furrow and scarcely impressed at apex. Elytra 

 broadly ovate, the basal margin sinuate and not broader than the 

 base of the prothorax, shoulders rounded, the posterior declivity 

 moderately steep and rounded dorsally ; upper surface convex, with 

 regular rows of large close punctures ; interval 2 costate near the 

 base and obtusely tuberculate posteriorly, the tubercles continued 

 nearly to the apex; interval 4 tuberculate from the base to the 

 declivity, 6 with very closely set obtuse tubercles from the shoulder 

 nearly to the apex, 3 and 5 each with a tuberculate basal callus, the 

 latter sometimes having also a row of small distant tubercles. Legs 

 stout, with dense grey scaling and short dark setse ; tibiae scabrous, 

 the internal angle with a straight spur, the outer angle of anterior 

 pair bluntly produced ; tarsi moderately long and stout. 



Portuguese E. Africa : Delagoa Bay {Monteiro). 



Type in the British Museum. 



Structurally this species is very closely allied to plagosus, Per., 

 but its obtuse and much closer tuberculation, its more regular 

 punctuation and its different colouring give it quite a distinctive 

 appearance. These characters are quite constant in the three 

 examples (all in the British Museum) which I have examined. 



18. Synthocus wardeni. Per. 

 S. ivardeni, Per., Trans. S. Afr. Phil. Soc, 1888, p. 165, 

 pi. iii., fig. 13. 



Long. 12^-14; lat. 5-5|- mm. 



Colour brown, with a very broad subdorsal grey stripe on each 



