
No. 426.] UTAH CHILOPODS OF THE GEOPHILID.E. 479 
Cephalic plate wider than long ; posterior border covered by the basal 
plate, substraight ; impressed with a median sulcus ; frontal plate discrete ; 
basal plate in male less than thrice wider than long (2.8:1 nearly), in 
female more than four times wider (4.35 : 1). 
Dorsal scuta not sulcate; anterior przsscuta short, middle and posterior 
moderately long. 
Ventral plates with a distinct median sulcus. 
Spiracles all round, the first rather small, those succeeding scarcely 
decreasing in size, the posterior being not much or not at all smaller than 
the anterior. 
Legs sparsely hirsute with moderately long hairs; first pair distinctly 
smaller than others ; the anterior and posterior pairs subequal; anal legs 
of male shorter than the penultimate, much stouter, densely clothed with 
short hairs, armed with a slender claw, anal legs of female slender, not at 
all swollen, similarly hirsute to other legs. 
Pleurz of last segment with 5-7 moderate pores on each side; last 
ventral plate relatively intermediate in width, wider than long (6.7 : 5.7 
nearly), sides curved, converging posteriorly ; anal pores moderate. 
Pairs of legs of male 37-39, of female 41. Length of average male 
16.7 mm., width .9 mm. ; length of female 13.5 mm., width .65 mm. 
Habitat.— About a dozen specimens were found in Logan canyon, 
Cache county, near the mouth, and three were taken among the pines on 
the divide between Daniell's Creek and Hobble Creek canyons, Utah county. 
The types were collected May 25, 1901. 
Linotenia micropus sp. nov. 
Description. — Robust, cephalad strongly, caudad more gradually atten- 
uated ; head and body above and below pilose, more densely in female 
than in male, last ventral segments more densely pilose than others, proster- 
num nearly glabrous ( 2) or sparsely hirsute (9); ferruginous throughout. 
^. Antenne very short (1 mm.), stout; moderately pilose ; articles mostly 
short, the ultimate longer than the two preceding taken together. 
Cephalic plate as a whole subequal in width and length, exposed portion 
wider than long in the ratio of 6: 5.4; posterior border produced backwards 
from sides to middle, subtriangular, overlapped by the basal plate ; basal - 
plate thrice wider than long. 
Claws of prehensorial feet when closed not reaching the front margin 
of head by a considerable space; claw armed at base with a long stout 
tooth, coxa unarmed; prosternum much wider than long (7: 4.2 approxi- 
mately), two and one-half times longer than the coxa, anterior margin widely 
sinuate, unarmed; inner margin of coxa extremely short or entirely 
concealed. 
Dorsal scuta not sulcate; anterior praescuta short, longer in male than 
_in female, the middle and posterior moderately long. 
