40 



BULLETIN 46, UNITED STATES NATIONAL MUSEUM. 



<>/' I-'onlitriit montana. 



of F<> ntariu trimaculata (Wood). 



:t8. 2 



"38. 8 



(i.3 

 6.4 



7.8 



7 

 5.4 



Syracuse, 

 ' Do. 



10. Geophilus oweiii, sp. nov. 



Diagnosis. (Frontal plate present, anal pores absent); coxal pores 

 present, large and .small, placed along- and partly concealed by last 

 ventral plate; pairs of legs, $ 67, $ 71. 



Type. IT. S. Nat. Museum. 



Habitat. New Harmony, Posey County, Ind. 



Description of type. Orange, head darkest. Slender, slightly atten- 

 uated posteriorly, smooth, legs sparsely pilose. Prehensorial legs 

 sparsely pilose and punctate, swollen; sternum wider than long (8: 7); 

 coxa a little longer than wide (3.5:3), unarmed; tooth small, acute. 

 Cephalic plate quadrate, scarcely narrowed anteriorly; posterior end 

 broadly truncate, slightly emarginate, and concealing part of basal 

 plate; basal plate nearly thrice as wide as long. 



Antennae short, joints moderately long, penult, and antepenult, sub- 

 equal. Dorsal plates sparsely punctate, bisulcate; anterior predorsal 

 plates short; median, one and a half times as long, posterior twice. 

 Spiracles round, anterior moderately large, median and posterior small. 



First pair of feet short, robust, anterior and posterior subequal, but 

 former stouter; anal legs armed. Coxa of anal legs considerably swol- 

 len, posterior border densely pilose; pores about ten, large and small 

 and mostly concealed by last ventral plate; last ventral plate wide 

 (3: 2), side barely rounded and converging, pilose. 



Pairs of legs: $ , 07, slightly crassate, densely pilose; $ 71, slender 

 and sparsely pilose, Length of $ 30 mm , width I 11 " 1 '; ? , length 43.5""", 

 width 1.2""". 



This species is described from a male and female collected by Dr. 

 Richard D. Owen, of New Harmony, Ind., and to whom I have the 

 pleasure of dedicating it. I have thought it best to introduce the fol- 

 lowing analytical key in order to show the relations of G. oireni as well 

 as those of some others recently described, belonging to that section of 

 GeopldhiK which has the last ventral plate wide. 



Last ventral plate wide. 

 a. Frontal plate present. 

 b. Anal pores absent. 



