220 Correspondence 



CORRESPONDENCE. 



Mr. James A. C. Rehm^ Assistant Curator, The Academy 

 of Natural Sciences, Philadelphia, U.S.A., writes as follows: — 



*' At present being engaged upon the studies of the Dermaptera 

 and Orthoptera belonging to the Transvaal Museum, as well as 

 series possessed by this Academy from Mozambique and Natal, 

 it occurred to me that you might have material belonging to these 

 orders which you would care to have determined. My work on 

 the Transvaal Dermaptera and the Blattidae is virtually com- 

 pleted and my report goes to England for publication in the 

 *' Annals of the Transvaal Museum " in about ten days. How- 

 ever, I should be extremely happy to see any additional Blattidae 

 as I have many Transvaal problems which are far from solved. 

 The work on the Mantidae is partially done and I intend to com- 

 plete the whole series of studies as rapidly as possible. My 

 African studies are by no means limited to southern Africa, as I 

 have very large series from the Congo, Cameroons, East Africa 

 and the Soudan, work on which is in various stages of completion. 



Of any material sent, the Academy would ask a set for the 

 collection here, in return for my identifications. 



Mr. F. S. Torvnsend of Plumstead, writes as follows: — 



Has the colour — greenish-blue — of the eggs of Cocc})stes cafer 

 been recorded? 



On the 6th Feb. 1918, on my farm *' Copleston *' 16 miles 

 north of Bulawayo, I shot a female whose oviduct contained an 

 egg, pure greenish-blue (and very many others undeveloped) 

 exactly like in size, colour and shape to the eggs of Craterops 

 pardinii and which egg I gave to the Rhodesian Museum. 



