Tin: .myi:fai'Oi>a or .soinii amkiik a. 101 



Tiino m.iy jirovp tliit tins ncvr sjiorirs is only ;m H;vstoni \i»ri«'t\ <•!' 

 I., piillns, hilt Itlltil illtrniM'diiltr S|M('illH'li.s .lie t'niiiMl It is Im'sI to ton 

 Huk'i thi'iii as tlistiurt f^jMairs. 



38. Lithobius kochi StuxlMiMf. \Vt«t rliJV, <'olo. ; T. M. A. Coikircll. 



Aiiiil I«';;s iiniird with two (laws. Coxal i>orrs {'v\\ in a siii;;i«> srrirs. 

 rt'iiultimat*' pair of l«';;s annrd with two rlaws. Coxa* of last two 

 pails of ir^is iat«'rall\ aiined. Tt'stacroiis Inowii, antenna' and hrad 

 daikost, ]v<fs pah'r. Moderately sh'ndrr, smooth, sparsely pilose: head 

 of about eijiial len;^th and Itreadth. Antenna- short, reaehin;; to the 

 fifth sejinient, art ieh's L'(». Oeelli S or 9, arrany:ed in \ seru's. Tio- 

 sternal teeth 1! -r L'. ('<»xal p<»res i", l'. .{, .'i-.'{. .1. .'!. .!, round. Spines 

 of first i)aii' of lejjs 1.1.1: o|' pemiltiniate pair 1. •">. •». L': of anal pair 

 l.;i, L', 0. 



Male: Anal lejrs somewhat stouter than those of female. I'emah': 

 Claw of ;:eiiitalia bipartite, short and wide: spines 2 -f- _: inner nuieh 

 shorter. Lenj^th 7-7.8""". 



1 at first eonsidi'red these sjx'eimens ;is representing a new spjsies. 

 but as the apparent ditlereuees <4:radnally dwindled down to the nnin- 

 ber of spines of the fiist i)air ot h*;;s, I tlnally eoneluded that they were 

 identieal with bnlii, which has only been found at Saiieelito, Cal. 



For the sake of eompleteiu'ss 1 have jiiveii a deseiiptioii of the speei- 

 mens. 



39. Lithobius atkinsoni I'olliniin. Maniii, (Isi.; I.. M. I'luln wiuxl. 



Amonj^ the material sent by Dr. I'nderwood are thr«'e speeimens. 

 two temales and one male that I refer to this species. 



ThefoUowinjj ])oints are worthy of notice: Antenna' lM-.'5.» articulated : 

 ocelli S-L'O, arranji'ed in 4-7 serii's; prosternal teeth ."t-i-.'MJr 7 + 7: toxa* 

 of last three i)airs of le^js laterally armed. : co.val por«'s .'.. I, 4. 4-(i, 7, 7. <», 

 round or transversa*; spines of first i>air of lejis, 1, L', 1 or -, .'{. 1 : spiiu's 

 of anal and penultiuiate pairs 1, .*j, .">, 1; last two taisal joints of anal 

 and penultimate pairs of legs of male snlcate on the inner side. 



40. Lithobius xenopus. sj). imv. 



Difif/nosis. — Related to L. niorda^r, but the fennnal an<l tibial joints 

 of the anal lej;s of male strongly modified. 



ll((h}t((t. — Macon, (ia.; L. ]M. Underwood. 



T}/)H.--Ace. 10542, 2l», V. S. Nat. .Museum. 



Ih'seripfion. — IJrown, head rufous, antenna' dark, h'gs ]»alc. Moder- 

 ately slender, rather smooth, sjjarsely pilose; head wider than long 

 (4:3). Antenuie moderately long, reaching the seventh segment, arti- 

 cles 30, short. Ocelli 32, in 7 transverse series. Prosternal teeth (» + 7. 

 Coxal pores 6, (», (>, 4, round. Spines of first \)uiT of legs 2. 3, 2; of 

 penultimate pair 1, 3, 3, 2; of anal pair 1, .'J, 3, 2. Claws of anal and 

 l)enultimate pairs of legs single. Coxa* of the last three pairs of legs 

 laterally armed. 



