THE MYRIAPODA OF NOKTJI AMEKICA 43 



14. Lithobius tyraiiaicus, sp. nov. 



IH<t(/>n.'Ni.s. Related to .Lithobius latzcli Meinert, but the coxa! pores 

 transverse; claw of female genitalia iimch longer and indistinctly tripar- 

 tite: size larger. 



Type. V. S. ]S'at. Museum. 



Habitat. (heencastle. Bloomington. Salem, and Xew Providence, 

 End. 



Description of lypt'. Brown, more chestnut than /.. lutzdi; legs ful- 

 vous. Kobust, rough, especially posteriorly; head wider than long 

 (6:5). Anteniue moderately long, attenuate, joints .">! to 30, short. 

 Ocelli 32-7 to 45-0. Prosternal teeth li + t( S + 8. Coxa of anal legs 

 unarmed beneath, those of the 13, 14, 15 legs laterally armed. Spines 

 of first pair of legs 1', 2, 1; penultimate and anal pairs 1, 3, 3, 1 or 1, 3' 

 3, 2. Coxa! pores : $ , 0, 7, 7, 5 to 8, S, 8, G ; 9 , 7, 8, 8, 7 to s. '.. S, 7. 



Male: Femur, tibia, and first tarsal joints of anal legs sulcate beneath, 

 last two tarsal joints sulcate on inner side, tibia depressed a;.d sulcate 

 above; penultimate pair of legs the same, but tibia not flattened and 

 sulcate above. 



Female: Anal and penultimate pairs of legs similar to the penultimate 

 pair of male; claw of genitalia long and stout, indistinctly tripartite, 

 middle lobe much longer, inner smallest. 



Length of body 18.5 to 2G' 1 -'", width 2.5 to 3.8""" : antenna- S to 12"""; 

 anal legs 9 to 12""". 



1 have compared this species with a series of L. latzcll from Chapel 

 Hill, N. ('., and find in the latter the following differences worthy of 

 notice: Coxal pores $ , 4, 5, 5, 4 to G, G, G, 5; 9 , 5, 5, ti, 5, t 5, 7, G, 5; 

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

 claw lobe somewhat the longest. 



Length of body 1C to 22""", width 1.8 to 2.G"""; antenna- 8 to 11"'"^ 

 anal legs 7.8 to 10""". 



My description of lAihohius tnorrt<u\ I' roc.. I. S. Nat. Mus. 2G2, 1887, 

 applies in part to this species. 



As several other species belonging to the subgenus .\colitlinliins have 

 been recently described, 1 have compiled the following analytical key 

 to help elucidate a few points as well as to correct some errors: 



ANALYSIS OF THE S1'i:< IKS <>I NKoI.H HoBIUS. 



. Anal legs armed with a sinlo claw, coxa- not armed beneath. 

 //. Coxal pores in a single series, round. 



c. Penultimate pair of feei armed with a single claw ; antenna' :>o to 10. jointed; 

 prosternal teeth 5 -(- 5 OT 6 -|- 6 J last two tarsal joints of anal legs sril- 

 ea t e on inner side /?VIH. v i 1 1 1' ill II H Ki M II. 



(<. Penultimate, pair ol'l'eet armed with a double claw. 

 (I. 1'roNternal teeth -1 -f- 1 or ."> -(- ">: antenn;e 26 to 34, jointed; tarsal joints ot' 



anal legs not sub-ate; orange or light ehestnnt <7<o '-MrN'i;iI.l.. 



d<t. Pros! em al teeth (i -f G to <s -f ,s ; antenna- :!'_' to :!."), jointed ; tarsal joints of 

 anal legs sulcate on inner side, brown l<tt:ili Ml-; IMC 1:1. 



