gunthorp: myriapoda of Kansas. 169 



26. Arenophilus osborni, n. sp. Plate XVI, figs. 1, 2 and 3. 



Body robust, round, attenuated at both anterior and posterior ends. 

 Color, Naples yellow, with a light brown, rather large spot on nearly 

 every segment. Head and antennae light orange; feet and sides lighter 

 than dorsal; ventral side slightly lighter than doi-sal, without dark spots. 



Cephalic plate about as broad as long (32:34). The two sides of the 

 anterior margin slightly concave, each extending from the center at a 

 slight angle backwards. Sides somewhat convex, having well-rounded 

 corners at the posterior ends. Posterior margin truncate, straight. Cov- 

 ered with fine punctations; also larger' ones scattered over the surface, 

 in each of which a hair probably grows, as several still contain them, 

 making the cephalic plate sparsely pilose; hairs not arranged in rows, 

 but irregularly scattered over the surface. A group of four or five hairs 

 on lateral margins, just back of the anteriolateral corners. 



Prebasal plate slightly exposed at the center. 



Mandibles large, when closed reaching to the middle of the first joint 

 of the antennae. Armed at the base with a single very minute tooth. 

 Slightly pilose. 



Labium longer than broad (5:4). Very slightly emarginate. On type 

 no trace of a median canal; on male (?) specimen median canal distinct, 

 but this is probably due to the latter specimen having been dried before 

 preserving. 'Finely punctate. 



Antennae rather long, the first five or six joints covered with long hairs, 

 the remaining with short hairs. The hairs gradually become more nu- 

 merous and shorter from the proximal to the distal end. 



The dorsal plates are minutely punctate (similar to the head) ; bi- 

 sulcate, with rather broad, shallow furrows; a few scattered hairs over 

 the surface. 



The ventral plates are distinctly bisulcate, with a small, nearly round 

 median depression, which becomes somewhat elongate posteriorly. 



The spiracles are oval on the first four or five segments, the remainder 

 being round. They gradually become smaller towards the caudal end. 



The coxal pores empty into two large pores on each side of a rather 

 broad ventral plate (a generic character). 



The anal legs are sparsely pilose and armed with a single claw. Not 

 swollen. 



Number of legs; j (?),53; j , 59. Leng-th, o , 57 mm. 



Habitat: Cowley Co. (type) (writer); Bourbon Co. (Biol. Survey). 



Named in honor of Prof. Henry L. Osborn, of Hamline University, my 

 former teacher. 



There are only two specimens of this species in the collection, and the 

 one from Bourbon county is in bad condition owing to its having been 

 crushed and dried before it was preserved. It has lost the anal legs, and 

 so I am not positive it is a male, but believe so from the number of legs, 

 53, instead of 59, as in the female type. 



27. Qeophilus dolichocephalus, n. sp. Plate XX, figs. 4, 5 and 6. 

 Color, light orange, with a dark orange head. Young specimens are 



yellow with an orange head. Legs yellow. About the same size for the 

 first two-thirds of its length, attenuated from this point backwards. 



