Pomona College Joihnal ok F.ntomolooy 



667 



Figure 219 

 A, Dorsal view of anterior end of Mecistoceplialus liinatus (Wood), showing 

 the characteristic form of cephalic plate and its frontal suture, the narrow basal 

 plate with the pleurrc exposed each side, the much exposed prehensorial feet, and the 

 antenna-. H, ["irst and second maxilla- of the same showing the separation 

 of the coxa.' of the first and the long palpus membranous apically and bearing no 

 lappets: note also the extensive fusion of coxa- of second maxilla-. C. Dorsal view 

 of anterior end of Arrup pylorus gen. et sp. nov., with the prehensorial feet removed; 

 it shows the cephalic plate with antenn.x, the much overlapped basal plate with 

 the plcur.-e each side. D. First and second maxilla- of the same, showing particularly 

 the complete separation of the coxa- of the sccotid pair as well as those of the lirst; 

 contrast with B. E, Prehensorial feet and prosternum of the same; note the char- 

 acteristic teeth borne on mesal luargin of first joint. 



