262 DESCRIPTIONS OF LITHOBIIDJE AND SCUTIGERID^ 

 Subgenus Neolifhobuis Stuxberg. 



14. Lithobius mordax Koch. 



Lithobius mordax Kocli., Die Myriapodengattang Lithobius, 34, 1862. 



Brown, ventral lamina?, feet and tip of antennse light ; prehensorial 

 feet bright chestnut. 



Robust, not smooth, more so posteriorly. 



Head subcordate, slightly longer than wide; punctate. 



Antennte long, joints 31-38, mostly small ; densely pilose. 



Ocelli numerous, 34-50, in 7-10 series. 



Prosternal teeth 12-14, stout, conic, not crowded much. together. 



Ooxal pores 7, 7, G, 5-10, 10, 10, 9, large, nearly all transverse. 



First pair of feet armed with 2, 2, 1-3, 3, 2 spines ; penultimate 1, 3, 

 3, 2; last pair 1, 3, 3, 1 or 1, 3, 3, 2. 



Posterior feet rather long, scarcely inflated. 



Claw of the female genitalia large, trilobed, the middle one by far the 

 largest; spines rather long and slender, the inner shortest. 



Length of body 20-2G""" ; last pair of legs 10-11™™. 



Habitat. — Indiana, Kansas, Louisiana, Mississippi, and Florida. 



I have examined specimens of this species from Bloomington, Ind., 

 and Pensacola, Fhi. Those from the latter locality have the coxal 

 pores more numerous, the spines of the first pair of feet less, and a 

 lighter coloration. One specimen 18™™ long, from the same place, has 

 the ocelli 25 in number. 



15. Lithobius clarus Mc Xeill. 



Lithobius clarus McNeill (MSS.). 



Yellowish-brown; edges of scuta darker, antennre dark, tip rufus; 

 ventral lamiutB and feet somewhat paler. 



Rather slender, scarcely' robust, smooth. 



Head obcordate, length and breadth equal ; a little rough. 



Antenna? moderately long, joints 2G-30, becoming shorter towards 

 the end, not densely pilose. 



Ocelli moderate, 20-27, in 5-7 series. 



Prosternal teeth 8, short, evenly separated. 



Coxal pores few, 4, 4, 5, 3-4, 5, 5, 4, round. 



Spines of first pair of feet 1, 3, 2-2, 3, 2; penultimate 1, 3, 3, 2; last 

 I)air 1, 3, 3, 1-1, 3, 3, 2. 



Last pair of feet long, not inflated. 



Claw of female genitalia broad, trilobed, the middle lobe about 1^- as 

 long agani as the others ; spines moderately long and slender, the inner 

 shortest. 



Length of body 15""" ; last pair of feet G""". 



Habitat. — Pensacola, Fla. 



The above description is taken from part of the type specimens. The 

 following is a description of a young specimen : 



Yellow ; slender. Joints of antennie 28. 



