324 



PHYLUM ARTHROPOD A. 



a basal piece (protopodite), an inner fork (endopodite), and an outer fork 

 (exopodite). The entomologists divide the protopodite into a lower joint 

 the cardo, and an upper the stipes ; the endopodite into an internal lacinia, 

 and an external galca ; while the exopodite is called the maxillary palp. 



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(3) The last pair of oral appendages or second maxilla, are partially 

 fused, and form what is called the labiitm. The lower and upper joints of 

 their fused protopodites are called sitbmcutuin and mentum ; the endopo- 

 dites on each side are double, as in the first maxillae, and consist of internal 

 lacinia and ^tercakparaglossa ; the exopodites are called the labial palps. 



