GENERAL ORGANIZATION. 203 



to be 5-jointed. The maxillge of lapyx are thus de- 

 scribed by Meinert : 



" The maxillae ^ are connected with the lingua, and, 

 together with the latter and the paraglossas, supported 

 by a peculiar internal framework of thin chitinous 

 pieces, of which the construction will appear more fully 

 from figure 3. The most prominent part of the maxilla 

 is the inner lobe, which is more strongly chitinised than 

 the other parts, hooked or sickle-shaped, and carries 

 on its concave inward edge five curved, deeply sub- 

 divided, smaller lobes orlamellaB. The inner maxillary 

 lobe is supported by the stipes, which is tolerably firm, 

 elongated, and flat. From the basal extremity of the 

 stipes a thin chitinous piece can be traced connecting 

 it with the outer branch of the framework just men- 

 tioned, and this I look upon as representing the cardo 

 or hino-e of the maxilla. The outer lobe is membra- 

 naceous, and has near its anterior margin a small conical 

 protuberance. There is a distinct palpiger carrying a 

 biarticulate palpus." 



The maxillge of Gampodea are somewhat less de- 

 veloped than those of the other genera, and, indeed, 

 more closely resemble those of the Collembola. The 

 terminal lobes are more numerous, and the maxillary 

 palpi are inarticulate. 



The lingua is membranous, delicate, and bilobed. 



The lower lip in Lepisma (PL LXVI, fig. 11) consists 

 of four fleshy, subequal lobes ; the palpi are 4-jointed, 

 and the two terminal segments are much enlarged. In 

 Machilis maritlmus the labium is more distinctly divided 

 along the middle line, and has three lobes on each side. 

 The palpi are rather more elongated, but not swollen 

 at the apex. According to Nicolet the labial palpi of 

 Nicoletia are composed " de quatre articles formant 

 massue, le dernier gros et ovoide." The labimn of 

 Gampodea is bifid, and each half is divided into two 

 pieces by a transverse groove ; from the hindmost 

 divisions rise the short conical, hairy, labial palpi, 



1 ' Ann. and Mag. of Nat. Hist ,' 1867, p. 368. 



