CLASS II. CRUSTACEA. Ixvii 



ORDER II. — P^ciLOPODA (cotitinued). 



Family. Tribe. Genus. Example of Species. 



o 



"« 1 g 1 I. T>iche\estmm, Herm. , _ . . 

 <" ' '° - ■ ' ' T^ stunonis 



c e 



fls 



■].. 



^j \ II. Nicothoe, Aud. &! ^ .,.„„: 

 1 Miln-Edw J 



TRILOBITES. 



The singular fossils called Trilobites, are supposed by naturalists 

 to have been crustacea allied to entomostraca. 



The principal genera are 



1. Agnostus, Brong. 



2. Calymene, Brong. 

 S. Asaphus, Brong. 

 4. Ogygia, Brong. 



.5. Parodoxides, Brong. 



i 2 



