65 



BEITRÄGE ZUR KENNTNISS DER LXSEKTENFAUNA 

 VON KAMERUN. 



(cONTRUiUTIUNS TO THE KN< )\\LED(;i". OK THE INSECT-EAUNA OF CAMERUN). 



3. 



OX THK STRUCTURB: and HABITS 



OF 



HEMIMERUS TALPOIDES Walk. 



i;y 



Dr. H. J. Hansen (Copenhagen). 



(PI. 2—3.) 



I. Introductory Remarks. 



This very curious Insect has attained great renown by the 

 monograph of Saussure quoted later on. The statement of this 

 author that it possesses »labia 2 superposita, utrumque palpis 

 2», consequently 4 pairs of mouth-organs formed of modified legs, 

 difters so strongly from the commonly adopted view of the mouth- 

 organs of Insects that every one, having an interest in the mor- 

 phology of Arthropods and more especially in the morphology 

 of Insects, must be very anxious to examine this animal. In 

 British Museum (Natural History) the type-specimens of Walker 

 are found, all exsiccated, and the mouth organs of 2 of the spe- 

 cimens are dissected and pasted on paper. During a visit in 

 •London in the year i8gi I obtained by the courtesy of two of 

 the Entomological assistents, Mr. Ch. O. Waterhouse and Mr. 

 W. F. KiREV, the permission to study these dissected organs and 

 arrived at a result very exactly agreeing with the following re- 

 presentation, based on the investigation of specimens preserved 

 in spirit. 



Entontol. Tidskr. Arg. 15, H. i (1894). i 5 



