58 TERTIARY INSECTS OF NORTH AMERICA. 



long as they; the whole leg is devoid of armature or clothing and none is 

 perceptible on the abdomen. 



Length of abdomen, 3"""; breadth, 2.5 mm ; length of third pair of legs, 

 5.3 mm ; its femora, 1.85 ram ; tibiae, 1.65 mm ; tarsi, 1.8 mm ; first joint of same, 

 1.2 mm ; second joint, O.C mm ; fourth pair of legs, 7.45 mm ; its femora, 2.75 mm ; 

 width of same, 0.5 mm ; its tibiae, 1.5 mm ; width of same at base, 0.25 mm ; at 

 tip, 0.4 mm ; its tarsi, 3.2 mm ; width of same, O.l mm ; length of first joint, 2 mm ; 

 second joint, 1.2"". 



A single specimen is preserved, in which all anterior to the two hinder 

 pairs of legs is lost. The species is readily distinguished from either of 

 those here describe' d by the unequal width of the tibia;, as well as for the 

 disparity in width between the tibiae and tarsi. As the front legs are want- 

 ing, this may not so properly be referable as the others to the Thomisides 

 rather than the Philoilromina-. . 



Florissant. Nos. 5502 and 7521. 



2. TlIOMISUS DISJUNCTUS. 

 PI. 11, Fig. 9. 



Cephalothorax obscure in both specimens, and apparently preceded by 

 a slender beak, more than half as long as the abdomen and divided into two 

 lateral halves closely united ; they seem to be a pair of elongated cheliceres, 

 but are poorly preserved in both cases. Abdomen rounded, short oval, 

 about a fourth longer than broad, with both ends equally rounded. Legs 

 long and slender, the two front pairs- longer than the hinder two, the first 

 also considerably longer than the second ; the femora are long and slender 

 (the front pair about as long as the abdomen), flattened and tapering at 

 either end; the tibue and first tarsal joint are completely consolidated into a 

 single piece, so that the line of demarkation can not be seen, and are very 

 slender, equal, as long as the femora; the other tarsal joints are together 

 less than half as long as the previous member and scarcely slenderer than 

 it, terminating in a slightly curved delicately pointed claw as long as the 

 width of the tarsus. 



Length of abdomen, 1.75 mm ; breadth, 1.45 mm ; length of first pair of 

 legs, 4.2 mm ; its femur, 1.8 mm ; tibia, 1.7 mm ; tarsus, 0.7 mm ; second pair, 

 2.85 mm ; femur, 1.2 mm ; tibia, 1.15 mm ; tarsus, 0.5 mm ; tibia of third pair, l.05 mm ; 

 tarsus, 0.4 mm ; fourth pair, 2.2 mm ; femur, l mm ; tibia, 0.8 mm ; tarsus,0.4 mm . 



