1910] Diplopoda from the Western States 243 



out on horizontal plates or extensions like those of first two segments 

 but reduced and comparable in size to the one immediately dorsad 

 of it, and projecting cephalad instead of caudad as do the other carinae. 

 These segments with only scattered and weakly developed granules, 

 some appearing almost smooth. All marked with the usual fine median 

 keel. 



Anal scutum conspicuously granulate with strongly developed 

 tubercles. 



Anal valves not equalling the last dorsal scutum, narrow and elon- 

 gate. Granulate with strongly developed tubercles similarly to the 

 anal scutum. 



Caudal margin of head straight, not at all excavated. Vertex 

 of head transversely elevated, the lateral portions ridge-like, the ends 

 abrupt and conspicuous, while the mesal portion of the elevation 

 extends ventrad and narrows to a mesal point attaining the imaginary 

 line connecting the bases of the antennae,, in front of which extension 

 the level is depressed. Vertex crossed by a narrow median longitudinal 

 furrow. Entire head granulate, the lateral portions more coarsely so. 

 Hirsute, more strongly so over clypeus and adjacent region. 



Labrum set off by a transverse depression or furrow; lateral por- 

 tions rounded; mesally with two conical teeth. 



At each lateral end of transverse elevation of the vertex a small 

 darkened area apparently representing an eye; but in the type speci- 

 men ocelli indistinct, three or four obscurely indicated areas apparently 

 representing them, the granular character of the general surface making 

 their certain identification difficult. 



Antennae short; strongly clavate; appressed close to head and in- 

 conspicuous. Fifth segment longer and much stouter than the third; 

 the seventh smaller than the sixth. Subdensely hirsute with short stiff 

 hairs, the proximal articles rather more sparsely clothed. 



First legs bearing along the cephalo-ventral surface a calamistrum- 

 like row of stout setae, elsewhere with fine hairs which are more sparse 

 on proximal joints. A moderate tuberculate elevation toward distal 

 end of femur on ventral surface like those present in males of some 

 craspedosomatids . 



Other legs mostly but sparsely provided with hair; all tuberculate. 



Length, 13 mm. Width, 1.2 mm., nearly. 



Locality — Portland, Oregon (Aug. 1902). One female spec- 

 imen. 



FAMILY XYSTODESMIDAE. 



Fontaria tuobita sp. nov. 



Black, the carinal and lateral margins narrowly bordered with 

 pale. Anterior portion of prozonites yellowish. Sometimes the black 

 of the dorsum is in varying degrees supplanted with brown which 

 encroaches in irregular streaks and spots. Sides paler, smoky yellow, 

 the dark color tnore pronounced adjacent to bases of legs and on caudal 

 segments or forming distinct bands down each segment in alternation 



