84 MR. R. W. JACK OX THE LARV.E 



skulls from a friend at Marandellas in Maslionaland, ^vho 

 told me, before he saw our example, that their Baboon was 

 different from the Chacma, and who says it is common in 

 that neighbourhood, but not easy to obtain on account of its 

 wariness and the hilly nature of the regions it frequents. I 

 shall publish a supplementary description later, upon the 

 receipt of more material. 



^^otes on the Larvce, etc., of some Rhodesian Tenebrionidse. 

 By Rupert W. Jack, F.E.S., Government Entomologist, 

 S. Rhodesia. 



(Plates IV.-VI.) 



Certain terrestrial members of the family Tenebrionidse 

 are of no small economic importance in Southern Rhodesia 

 owing to attacks by either the adult beetles or the larvae on 

 crops. On this account they have been for some years past 

 the subject of study by the entomological branch of the 

 Agricultural Department at Salisbury, and as a result the life 

 histories of several species have been elucidated. The larva* 

 of different genera have been found to present very definite 

 characteristics, by which they can be recognized without 

 difficulty ; and, as the family has apparently been little 

 studied with respect to the immature stages of the members, 

 it is desired to place on record such morphological notes as 

 have been made during the course o£ research carried out 

 primarily in the interest of the farming community. The 

 paper deals with larvae belonging to the gener^ Psammod es, 

 Distretus, Anomalipus, Gonocephalum (Opatrum), 

 Emyon, Zophosis and Trachynotus. For the identi- 

 fication of the various species the writer is, with two 

 exceptions, indebted to the courtesy of Dr. Peringuey, 

 Director of the South African Museum. Trachynotus 

 geniculatus, Ilaac/, and Psammod es si mil is, Per., were 

 identified through the agency of Dr. Guy Marshall at the 

 British Museum. 



