LITERATURE 4 1 9 



Davis, H. 1879. Notes on the Pygidia and Cerci of Insects. Journ. R. 



Micr. Soc., vol. 2, pp. 252-255. 

 Kraatz, G. 1881. Ueber die Wichtigkeit der Untersuchung des mann- 



lichen Begattungsgliedes der Kafer fur die Systematik und Artun- 



terscheidung. Deuts. ent. Zeits., jhg. 25, pp. 113-126. 

 Dewitz, H. 1882. Ueber die Fiihrung an den Korperhangen der Insecten. 



Berlin ent. Zeits., bd. 26, pp. 51-68, fig. 

 Gosse, P. H. 1882. On the Clasping Organs ancillary to Generation in 



certain Groups of the Lepidoptera. Trans. Linn. Soc. Zool., ser. 



2, vol. 2, pp. 265-345, 8 pis. 

 Von Hagens, D. 1882. Ueber die mannlichen Genitalien der Bienen-Gat- 



tung Sphecodes. Deuts. ent. Zeits., jhg. 26, pp. 209-228, taf. 6, 7- 

 Radoszkowski, 0. 1884. Revision des armures copulatrices des males du 



genre Bombus. Bull. Soc. Nat. Moscou, t. 49, pp. 51-92, 4 pis. 

 Saunders, E. 1884. Further notes on the terminal segments of Aculeate 



Hymenoptera. Trans. Ent. Soc. London, pp. 251-267. 

 Haase, E. 1885. Ueber sexuelle Charactere bei Schmetterlingen. Zeits. 



Ent. Breslau, n. f., bd. 9, pp. 15-19; bd. 10, pp. 36-44. 

 Radoszkowski, 0. 1885. Revision des armures copulatrices des males de 



la famille des Mutillidse. Horse Soc. Ent. Ross., t. 19, pp. 3-49, 



9 pis. 

 Von Ihering, H. 1886. Der Stachel der Meliponen. Ent. Nachr., jhg. 12, 



pp. 177-188, taf. 8. 

 Goossens, T. 1887. Les pattes des Chenilles. Ann. Soc. ent. France, ser. 



6, t. 7, pp. 385-404- pl- 7- 

 Graber, V. 1888. Ueber die Polypodie bei Insekten-Embryonen. Morph. 



Jahrb., bd. 13, pp. 586-615, taf. 25, 26. 

 Haase, E. 1889. Ueber Abdominalanhange bei Hexapoden. Sitzb. Gesell. 



naturf. Freunde, pp. 19-29. 

 Haase, E. 1889. Die Abdominalanhange der Insekten mit Beriicksichti- 



gung der Myriopoden. Morph. Jahrb., bd. 15, pp. 331-435, taf. 



14, IS- 

 Radoszkowski, 0. 1889. Revision des armures copulatrices des males de 



la tribu des Chrysides. Horse Soc. Ent. Ross., t. 23, pp. 3-40, pis. 



1-6. 

 Beyer, 0. W. 1890. Der Giftapparat von Formica rufa, ein reduziertes 



Organ. Jenais. Zeits. Naturw., bd. 25, pp. 26-112, taf. 3, 4. 

 Carlet, G. 1890. Memoire stir le venin et 1'aiguillon de 1'abeille, Ann. 



Sc. nat. Zool., ser. 7, t. 9, pp. 1-17, pl. i. 

 Packard, A. S. 1890. Notes on some points in the external structure 



and phylogeny of Lepidopterous larvse. Proc. Bost. Soc. Nat. 



Hist., vol. 25, pp. 82-114, pis. i, 2. 

 Sharp, D. 1890. On the structure of the terminal segment in some male 



Hemiptera. Trans. Ent. Soc. London, pp. 399-427, pis. 12-14. 

 Wheeler, W. M. 1890. On the Appendages of the first abdominal Seg- 

 ment of embryo Insects. Trans. Wis. Acad. Sc., vol. 8, pp. 87- 



140, pis. 1-3.* 



