MYRIAPODA. 587 



and Pediculus of authors, have the mouth furnished with 

 two teeth. The Pedicuhdae have a tubular proboscis, and 

 include the genera Pediculus, Phthirius, and Haemato- 

 pinus. 



II—MYRIAPODA 



Feet numerous, supported by the abdomen. 



The animals of this group are lengthened. The head and 

 thorax are united, and the six thoracic legs corresponding 

 with those in the insecta, are converted into auxiliary max- 

 illae. The abdomen is divided into numerous segments, 

 each bearing a pair of legs. They have compound eyes, 

 and no simple ones. 



Order I. — Chilognatha. 



Antennae seven jointed. Legs short, body crustaceous. 

 The following genera belong to this order : Glomeris, 

 Julus, Craspedosoma, Polydesmus, and Pollyxenus. 



Order II. — Syngnatha. 



Antennae of fourteen joints at least, legs long. In some 

 of the genera the tarsus of the second pair of auxiliary 

 maxillae are pierced by the aperture of a poison-duct. 



This order includes the following genera : Scolopendra, 

 Scutigera, Lithobius, Cryptops, and Geophilus, 



The capture of the articulated annulosa is accomplished 

 with the hand, with forceps, or gauze-nets, according to the 

 nature of the species. Care ought to be taken to presei've as 

 entire as possible all the limbs, antennae, and down upon 

 the body. They should then be placed in separate boxes, 

 or transfixed with a pin, through the thorax or side, ac- 

 cording to circumstances, and fixed in a Iwx, with the bot- 

 tom lined with cork. Butterflies, when fixed in lliis btate, 



