THE MYKIAI'UDA OF >OKTH AMEKICA 43 



14. Lithobius tyraunicus, sp. imv. 



lUtif/ndftin — Iicliitcd to LithohiuH httztli Mriiicrt, but X\\v roxal pores 

 transviMse; rhiw of t'cinale {genitalia niiicli loiijiei and indistiiutlytjipar 

 tite: size laij^rr. 



Tfipe. — r. S. Nat. Miisi'um. 



Ilahitiit. — (inM'iuastlr. P>l(io)iiin<^toii. Sah'ii). and New Providenct', 

 Ind. 



Ih'scriptitni of ti/p(. — Brown, moro chestnut tlian />, laizcH; le}»s ful- 

 vous. Ifobust, rou{;h, especially posteriorly; head wider than Ion;; 

 ((}:o). Antenna' moderately Ion;;', att«'niiate. Joints :»1 to .'J<J, short. 

 Ocelli ;VJ-7 to 4r)-t>. I'rosternal teeth <> + G t<» S + S. Coxa of anal le^-s 

 unarmed beneath, those of the l."5, 14, l."> le;:s laterally armed. Spines 

 of tirst pair of le;;s L', 2, 1: penultimate and anal pairs l,.i, M, I or 1,.'5' 

 3,2. Coxal pores: <?,(», 7, 7, 5 to 8,8, .S,G; 9 , 7,8, H, 7 toS,l>,,S, 7. 



Male: I'emnr. tibia, and first tarsal joints of anal le^fssulcate beneath, 

 last two tarsal joints snlcate on inner side, tibia depressed and snieate 

 above; i«'nnltimate ])air of leps the same, but tibia not tlattened and 

 snlcate above. 



Female: Anal and penultimate' pairs of lej;s similar to the penultimate 

 pair of male; claw of ^jenitalia long and stout, indistinctly tripartite, 

 middle lobe much longer, inner smallest. 



Length of body 18.5 to2G' "', width 2.."> to 3.8""": antenna' 8 to 12"""; 

 anal legs 9 to 12"'"'. 



I have compared this species with a series of L. httzeli from Chai)el 

 Hill, N. ('., and tind in the lattei' the followin^i difierences worthy of 

 notice: Coxal jxires 6 . 4, ~), .">. 4 to (5, 6, G, .">; 9 . .">, .~i, (», 5, t > •"». 7, (}, .">; 

 of female genitalia rather short and wide, distinctly tripartite, middle 

 claw lobe somewhat the longest. 



Length of body 10 to 22"'"', width 1.8 to 2.0"'"': antenna- 8 to 11"'"'^ 

 anal legs 7.8 to 10'"'". 



My description of Uthohiiin morthtj; Troc. T'. S. Nat. Mus. 2G2, 1887, 

 ai)plies in part U. this species. 



As several other species belonging to the subgenns Neolithobius have 

 been recently described, I have compiled the following analytical key 

 to help elucidate a few i)oints as well as to correct some errors: 



ANALYSIS OF THE SPIXIES OI Nl.Ol.ITHOBIUS. 



a. Anal legs armed Avitli a single claw, cox.t not armed beneath. 

 h. (.'oxal por<'.s in a single series, round, 

 c. rennltiuiate pair of feet armed with a single claw : antenme 30 to 40, jointed ; 

 prosternal teeth 5 + 5 or 6 + 6; lust two tarsal Joints of anal legs sul- 

 fate on inner side tronsmariniis Kocn. 



cc. Penultimate pair of feet armed with a double claw. 

 <1. Prosternal teeth 4 + 4or5 + 5; autenme 26 to 34, jointed; tarsal joints of 



anal legs not snlcate; orange or light chestnut chiruf !>IcXi:iI.L. 



dd. Prosternal teeth 6-fG to 8 -|- ,S; antenna- 32 to 35, jointed; tarsal joints of 

 anal legs snlcate on inner side, browu latzili Meixert. 



