chamberlin: geophiloidea of the southeastern states. 427 



Scolioplatics ruber Bollman, Amer. nat., 1887, 21, p. 82. Ann. N. Y. 

 acad. sci., 1888, 4, p. 110. Bull. 46, U. S. N. M., 1893, p. 132. 



Scolioplancs bidens (Wood), Brolemann, Ann. Soc. ent. France, 

 1896, 65, p. 58, pi. 6, fig. 10-13. 



Color in alcohol light brown, the sides and venter paler; head with 

 prosternum and prehensors dark reddish, the frontal region paler; 

 antennae reddish brown, pale distad. In life the color is bright red. 



Head widest at caudal end, strongly narrowed from about the 

 caudal fourth cephalad, the sides of the caudal fourth subparallel; 

 caudal margin slightly excurved anterior margin nearly straight 

 between antennae, oblique laterally; a median longitudinal sulcus on 

 caudal portion; wider than long in about ratio 9:8. Frontal plate 

 not discrete. Prebasal plate not exposed. Basal plate 3.5 times 

 wider than long. 



Antennae filiform, not at all attenuated distad; ultimate article 

 clearly shorter than the two preceding taken together; of medium 

 length, in specimen described 2 mm. 



Prosternum about 2.3 times wider than median length, 3 times 

 wider than lateral length, the length at side about equalling the outer 

 length of prefemur. 



Anterior prescuta moderately short, about ^ as long as main plate, 

 increasing in length caudad and in the posterior region becoming \, or 

 a little more, the length of main scutum. 



Spiracles large, circular, the first larger than the second in the ratio 

 5 : 4, others only very gradually decreasing in size toward the caudal 

 end of the body, those at caudal end smaller than the second and 

 immediately succeeding ones in ratio 4:3. 



First legs reduced, the succeeding several pairs gradually increasing 

 to full size; legs almost glabrous proximally, bearing but scattered 

 and very short hairs, these more abundant on distal joints. 



Ventral pores in a moderately wide transverse band along caudal 

 border, this band scarcely indicated on first few sterna, but on most 

 clearly separated into two adjacent areas. Each sternum with a 

 cruciform impression, the longitudinal sulcus being the more deeply 

 impressed and widening at middle of length into a shallow pit; the 

 transverse sulcus often broken into a- number of parallel impressions 

 or lines and becoming more deeply impressed on caudal segments. 



Last ventral plate narrow, conspicuously narrowed caudad where 

 it runs to an angle; sides nearly straight (Plate 2, fig. 2). Coxo- 

 pleurae much enlarged, bearing on ventral surface numerous (ad 24) 

 small pores. 



