Melnert.J ^ 62 [Oct. 2, 



right starting point, I rejected the old explanation altogether- 

 and based my views on a more general and, I hope, a more 

 correct explanation of the parts of the mouth. I have, in later 

 years, several times attempted to develop them and to apply 

 them to these organs. At present, I shall limit myself to re- 

 ferring to the last of my essays " Caput Scolopendra," of which 

 "both a Danish and an English edition was published in 1883.* 

 In this essay, by means of three plates, I have attempted to de- 

 monstrate the propriety of my new views with regard to the 

 Chilopoda in general and Scolopendra in particular. In con- 

 sequence of this also, several new terms were introduced ; but 

 Latzel and Haase had already, by their demonstration of the in- 

 correctness of the explanation of the first and second pair of 

 maxillae, which Savigny and I also had supported, made some 

 alteration necessary on this point. For the rest such alterations 

 are only made when the old terms refer to an incorrect explana- 

 tion. No reason was found for altering such terms as mandible 

 for example, although formerly I reckoned these organs with the 

 first segment or metamer, and now with the third metamer ; for 

 in the true Insects I consider the mandibles to be the third pair 

 of the parts of the mouth. (That the mandibles of the Myria- 

 poda and of the true Insects are not completely;' homologous is 

 of no importance here). 



I will now draw up the two series of terms; the old ones 

 which I have used hitherto, and the new, which I proposed in 

 my lately published " Caput Scolopendrae." 



OLD TERMS. NEW TERMS. 



Lamina cephalica. Lamina cephalica (head-plate). 



Labrum. Labrum (upper lip). 



Maxillae primi paris. Labium (under lip) p. p. 



Maxillae secundi paris. Labii processus interiores. 



Pedes maxillares primi paris. Maxilke or palpi maxillares. 



Mandibular Mandibular 



Pedes maxillares secundi paris. Sternum (metameri quarti) cum 



pedibus prensoriis. 

 Coxae (p. maxill.). Sternum (metameri quarti). 



Dentes pedum maxillarium, se- Dentes prosternales, seu dentes 

 cundi paris. prosterni metameri quarti. 



* The complete title of the English edition is "Caput Scolopendra: The head 

 of the Scolopendra &pd its rnusculatory system." "With 3 plates. Copenhagen, 

 1883. 



