264 Mr. G. Newport on new species of Myriapoda. 



and the predaceous habits of the higher species, approximate the 

 Chilopoda to the predaceous insects on the one hand, and to the 

 Arachnida on the other. The form of the head, in the two di- 

 visions of Myriapoda, seems to have reference chiefly to the par- 

 ticular habits of the species. Thus, in those which seize their 

 prey, and subsist, like the Arachnidans, on living objects, those 

 segments which in reality compose the whole head are not all 

 anchylosed together, but are in part freely moveable on each 

 other, and thus allow of a more prehensile function to the large 

 forcipated foot-jaws, the true mandibles of the Articulata. Some 

 naturalists have believed that these foot-jaws in the Chilopoda are 

 not the true analogues of the mandibles of insects and of Chilo- 

 gnatha-, but I am satisfied by recent examinations that this is 

 really the case. In the Chilognatha the foot-jaws have the form 

 of true mandibles, because the habits of the species require that 

 compact form of the organ which alone can be subservient, not 

 to the seizing and piercing of Hving prey, but to the grinding 

 or comminuting of more or less solid vegetable matter, on which 

 most of the genera of Chilognatha entirely subsist. In all other 

 respects, both in their internal as well as their external anatomy, 

 and in their physiology and mode of growth, the Chilognatha are 

 decidedly inferior to the Chilopoda. They seem to conduct us 

 down to the Annelida from the vegetable-feeding Crustacea, as 

 the Chilopoda do from the Arachnidans to the same class. 



Class MYRIAPODA. 

 Order II. CHILOGNATHA. 



Genus Glomeris, Latr. 



1. G. limhata, Latr. ; G. marginata. Leach. England. 



2. — annulata, Brandt ; G. marginata, Gervais. Spain. 



3. — transalpina, Koch. Sicily. 



4. — pustulata, Fabr. (sp.) ; var. b. G. microstemma, Brandt. Spain. 



This is a very distinct species, but is subject to great variety. 

 There are several specimens from Portugal in Mr. Hope^s collec- 

 tion, which most decidedly mark the varieties pointed out by 

 Brandt in his recent revision of this genus. 



Genus Zephronia, Gray ; Sph^ropceus, Brandt, 

 Antennae six-jointed, clavate, truncated. 



1, Z. ovalis, Gray. Java. Sphceropoeus insignis, Brandt. 



2. — glahrata, mihi. Whitish ash-colour, polished, with the front 

 of the head deeply and thickly punctured ; the anterior margin of 

 the first dorsal ring with a free elevated border. Length 4 lines. 

 Philippine Islands. 



