38 SUMMARY OF OUKKKNT KKSEAKCHES RELATING TO 



T. briccei described by Koch. (4) After 96 hours the trvpanosoiues 

 disappear from the digestive tract of the fly. (5) Two new species, 

 T. (jrai/i and T. tullochii, have been discovered to occur in freshly-cauglit 

 tsetse-flies ; these forms are not development stages of T. i/ambipnse, and 

 have nothing to do with sleeping sickness. A. C. H. Gray, in an appendix, 

 gives some notes on a Herpetomonas from the alimentary canal of Stomoxi/s 

 in Uganda. 



The "Unpaired Organ" of ConopidsB.* — R. N. Streiff endeavours 

 to throw some light on the nature of this organ, which is peculiar to the 

 females of this family of Diptera. It is a peculiarly-developed tifth 

 sternite, which appears to have some function in copulation in which the 

 females take an active part. 



Flies in Amber.f — F. Meunier discusses the Diptera of the family 

 Dolicliopodidae which occur in Baltic amber. He has found representa- 

 tives of seventeen genera, all of which are represented in the present-day 

 fauna. All the species are extinct, but are nearly related to living 

 forms. 



Internal Structure of Stomoxys.:}: — The late F. G. M. Tulloch 

 described the internal structure of the Uganda variety of Stomoxys, with 

 the main object of furnishing some comparison with GJossinn. An 

 account is given of the alimentary, nervous, circulatory, and reproductive 

 systems. 



African Termites and Termitophilous Insects.§ — F. Silvestri 

 reports on a collection from the colony Eritrea, including Eutermes 

 heteraspes sp. n., and three other Termitidae, and among the termit- 

 ophilous guests : TermUodiscus bellkosi sp. n. (a Staphylinid beetle), 

 and Thaumatozena andreinii sp. n. (a Dipterous insect). 



Catalogue of Cicadid8e.|| — W. L. Distant has made a critical 

 catalogue oi the chaos of over 1000 species of Cicadida3, wliich he 

 divides into three sub-families : — 



A. Tympanal lid present. 



a. Tympanal lid completely covering the tym- 

 panal aperture ..... Cicadinae. 

 aa. Tympanal lid leaving the apertui'e more or 



less open ...... GEeauinse. 



B. Tympanal lid absent ..... Tibiciniuje. 



Egg-opening Apparatus in a Pentatomid.t — R. Heymous de- 

 scribes in the embryonic stage of the Pentatomid Falomena dissimilis a 

 T-shaped chitinous ridge with a minute apical tooth, situated on the top 

 of the head, and adapted to force open the lid of the egg. When the 



* Zeitschr. Wiss. ZooL, Ixxxiv. (1906) pp. 139-203 (2 pis. and 15 figs.). 



t Comptes Kendus, cxliii. (1906) pp. 617-18. 



X Proc. Roy. Soc. London, Series B, Ixxvii. No. B 521 (1906) pp. 523-31 (5 figs.). 



§ Redia, iii. (1906) pp. 341-59 (22 figs.). 



II A Synonymic Catalogue of Homoptera. Parti. Cicadidse. London: British 

 Museum, 1906, pp. 207. 



t Zeitschr. f. Wiss. Insekten-Biol., ii.'(1906) pp. 73-82. See also Zool. Zentialbl., 

 xiii. (1906) p. 648. 



