1903.] NATURAL SCIENCES OF PHILADELPHIA. 153 



6j. — Posterior coxsp unarmed with spines; ocelli 6 in 2 series; 

 porigerous area of coxse deeply depressed, pores 

 .3, 4, 4, 3; anal legs of c? conspicuously compressed 

 sublaterally, without produced lobes; length 8 mm., 



remex sp. nov. 



6,. — Posterior coxae armed laterally (porigerous area of last 

 coxse not deeply depressed). 

 Cj. — Last 3 pairs of coxa? laterally armed. 



f/j. — OcelU 8-12; spines "of first legs 1,2, 1, of penult 

 1, 3, 3, 0-1, 3, 3, 1, of anal 1, 3, 3, 0; length 



7.5-9 mm., eigenmanni Boll. 



f/„.— Ocein 12-15; spines of first legs 2, 3, 2, of 

 penult 1, 3, 3, 2, of anal 1, 3, 2, 0; length 

 11.5-13 mm., . . . pitophilus sp. nov. 

 Cj. — Last two pairs of coxse laterally armed. 



d^. — Anal legs in d^ not specially modified; claw of 

 9 gonopods tripartite; coxal pores 2, 2, 3, 3- 



3, 3. 4, 3, very small; spines of first legs 

 1 , 2 , 1 , of anal 1 , 3 , 3 , 1 ; length 8-8.5 mm . , 



sastiaiius sp. nov. 



(h. — Anal legs in c? not specially modified ; claw of 

 9 gonopods tripartite; coxal pores 3, 4, 4, 3- 



4, 5, 4, 4, large; spines of first legs 1, 3, 1, 

 of anal 1, 3, 2, 0; length 9-10 mm., 



mesechinus sp. nov. 



r/3. — Tibia of anal legs in d^ produced above into a 

 large peculiar lobe at distal end ; (9 unknown) ; 

 coxal pores 2, 3, 3, 2, small; spines of first 

 legs 1, 3, 2-2, 3, 2, of anal 1, 3, 2, 0; length 



8.8 mm., castellopes sp. nov. 



d^. — Tibia of anal legs in c^ produced into a con- 

 spicuous lobe at the superior-interior angle of 

 proximal end ; claw of 9 gonopods tripartite ; 

 coxal pores 3, 4, 4, 3, moderately large; 

 ; spines of first legs 1, 3, 2, of anal 1, 3, 2, 0- 



1, 3, 2, 1; length 10.5-11 mm., 



clavigerens sp. nov. 



f/5. — Tibia of anal legs in d^ excavated within near 

 proximal joint, at which it and femur are 

 produced inward into a conspicuous lobe; 

 claw of 9 gonopods tripartite; coxal pores 



2, 2, 2, 2,-2, 3, 3, 3, small; spines of first legs 

 1, 2, 1,-2, 3, 2, of anal 1,3, 2, 0; length 7.5-11 

 mm., utahensis Chaxnh. 



dg. — (c? not known.) Claw of 9 gonopods entire; 

 coxal pores 2,3,3,3; spines of first legs 1 , 2, 1 ; 

 of anal 1, 3, 2, 1 ; length 13 mm., ohesus Stux. 



