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POMONA COLLEGE JOURNAL OF ENTOMOLOGY 



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Figure 131. 



A, Ventral view of ciuidal portion of a male of Lithobius utahensis. The figure 

 shows the modification of the anal legs, the ventral spines of the latter, and most of 

 those of the jienultimate pair, the coxal pores of the last two pairs of eoxae, and the 

 genital appendages. B, Ventral view of head and first segment of b. utahensis, show- 

 ing the prchensorial feet, prosternum with prosternal teeth overlying the mouth parts 

 the first legs with their ventral spines, etc. (', Cephalic aspect of leg of eleventh pair 

 of Lithobius obesus showing biarticniate tarsi, etc. 1), Eye patch of L. obesus showing 

 ocelli in four series, the largo single ocellus at the right (caudal end), and at the left 

 and below the peculiar Organ of Tomosvary. K. Gonopods of female L. obesus, showing 

 the undivided claw, the basal spines, etc. 



