THE MVKIAPODA OF NOKTH AMERICA. 29 



kSiihgeniis SttolithnlthiH StuxlxT^f. 



14. LithobiuB mordax Koch. 



//ilhohiitH mordas Koch., Dio .Myriapoclrn^attuii^ l.itlioliiiis. :{4, 1H62. 



BiowiF, ventral liiiiiiiiii', feet and tip of antenna* lijflit; prehensorial 

 feet Ini^lit chestnut. 



Hohust, not smooth, more so posteriorly. 



Head siibcordate, slightly lonjjer than wide; punetate. 



Antenme Ion;;, joints .'U-^S, mostly small; densely i)ilo8e. 



Ocelli nninerous, 34-."»(), in 7-10 series. 



Prosternal teeth lli-14, stout, conic, Dot crowded much together. 



<'oxal i)ore8 7, 7, (i, v>-10, 10, 10, 9, lar^e, nearly all transverse. 



First pair of fe<'t armed with 2, 1!, l—'i, .'?, L' sjnnes; p<;nultimate I, .'^, 3, 

 2; last pair 1, .i, .*}, 1, or 1, .i, 3, li. 



I'osterior feet rather Ion;;, scarcely inflated. 



Claw of the female genitalia lar^e, trilohed, the middle one by far the 

 largest; sjiines rather lon^ and slender, the inner shortest. 



Len^'th of body 1*0-20"""; last pair of legs 10-11""". 



I/ahitat. — Indiana, Kansas, Jiouisiana, Mississippi, and Florida. 



1 liave examined specimens of this species from Bloomiugton, Ind., 

 and J*ensacola, Fla. Those from the latter hx-ality have the coxal pores 

 more numerous, the spines of the tirst ])air of feet less, and a lighter 

 coloration. One specimen 18""" long, from the same place, has the ocelli 

 25 in number. 



15. Lithobius clarus McNeill. 



Lithohiiis chtniH McNeill (MSS.). ; 



VeUowish-brown ; edges of scnta darker, antennse dark, tij) rufous; 

 ventral lamina' and feet somewhat paler. 



Rather slender, scarct'ly robust, smooth. 



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



Antenna' moderately long, joints 20-30, becoming; shorter towards 

 the end, not densely i)ilo8e. 



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



Trosternal teeth 8, short, evenly separated. 



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



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

 pair 1, 3, 3, 1-1, 3, 3, 2. 



Last pair of fe» 'ong, not inflated. 



Claw of female genitalia broad, trilobed, the middle lobe about li as 

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

 s]u)rtest. 



Length of body 15"""; last pair of feet 6"'"'. 



Habitat. — Pensacola, Fla. 



The above description is taken from i)art of the type specimens. The 

 following is a descrix)tion of a young specimen: 



