1887.] rKOCEEDINGS OF UNITED STATES NATIONAL MUSEUM, t 623 



Miasitrements of Fontaria montaua. 



Mcafiiiremoits of Fontaria irimacidata {Wood). 



10. Geophilus oweni, sp. iiov. 



Diagnosis. — (Frontal plato present, anal pores absent); coxal jiores 

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

 ventral plate; pairs of legs, $ G7, 9 71. 



Type.— U. S. Nat. Museum. 



Uabitat. — New Harmony, Posey County, lud. 



Bescription of ti/f>e.—DrnugQ, head darkest. Slender, slightly atten- 

 uated posteriorly, smooth, legs sparsely pjlose. 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. 



Antenme short, joints moderatel}- 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 effect 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 : 5 , 07, slightly crassate, densely piloses; 9 71, slender 

 and sparsely pilose. Length of S 30'""', width !■"■" ; 9 , 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. oiccui as well 

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

 Geophilus which has the last ventral plate wide. 

 Last venti'al plate wide. 

 a. Froutal plate present. 

 b. Anal pores absent. 



