626 NEW SPECIKS OF MYRIAPODS. 



14. Lithobius tyrranicus, sp, nov. 



Diagnosis. — Kelated to Lithobius latzeli Meinert, but tho coxal pores 

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

 tite; size larger. , 



Typc.—JJ. S. Nat. Museum. 



Habitat. — Greencastle, Bloomiugton, Salem, and New Providence, 

 Ind. 



Description of type. — Brown, more chestnut than L. latzeli ; legs ful- 

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

 (G:5). Antennie moderately long, attenuate, joints 31 to 30, short. 

 Ocelli 32-7 to 45-9. Prosternal teeth G+ 6 to 8 + 8. Coxa of anal lege 

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

 of first pair of legs 2, 2, 1 ; i^enultimate and anal i^airs 1, 3, 3, 1 or 1, 3, 

 3, 2. Coxal pores : 5 , G, 7, 7, 5 to 8, 8, 8, C ; 5 , 7, 8, 8, 7 to 8, 9, 9, 7. 



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

 last two tarsal joints sulcate on inner side, tibia depressed and 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 20""", width 2.5 to3.8 "'"'; antennae 8 to 12™™; 

 anal legs 9 to 12"'">. 



I have compared tbis species with a series of L. latzeli from Chapel 

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

 notice : Coxalpores 5 , 4, 5, 5, 4 to 6, 0, G, 5 ; $ , 5, 5, G, 5, to 5, 7, G, 5 ; 

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

 claw lobe somewhat the longest. 



Length of body 16 to 22""», width 1.8 to 2.0™™-; antenme 8 to 11™™, 

 anal legs 7.8 to 10"'™. 



My description of Lithobius mor(la.v, Proc. U. S. Nat. Mus. 2G2, 1887, 

 applies in part to this species. 



As several other species belonging to the subgenus Kcolithobiiis have 

 been recently described, I have compiled the following analytical key 

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



AXA.LYSIS OF THE SPECIES OF XEOLITIIOBIUS. 



a. Aual I('fi;s armed with a single claw, coxiu not armed beneath. 

 h. Coxal pores in a single series, round. 

 c. Peuultimatopair of feet armed with a single claw ; auteuna> 30 to 40, jointed ; 

 lirostcnial teeth 5 + 5 or G -j- (5 : last two tarsal joints of nnal legs sul- 

 cate on inner side Jrantimaviniis Kocil. 



cc. renultimato pair of feet armed witli a double claw. 



d. Prosternal teeth 4 + 4 or 5 +5; antenn.'e 2G to 34, j ointed ; tarsal joints of 



aual legs not sulcate ; orange or light chestnut clarun McNiell. 



dd. Prosternal teeth G + G to 8 + 8 ; anteuuio 3'2 to 35, jointed ; tarsal joints of 

 anal leg's sulcate on inner side, brown JatzcU Meinert. 



