Chamberlin — A New Diplopod and Chilopod. 43 



Locality. — Texas: Bay City. A. Wetmore coll., 1 January, 1918. 



Obviously different in coloration from the genotype in its dark blue 

 color and the lack of contrast between dorsum and lower part of sides 

 and venter, and the lack of pronounced pattern. It differs very clearly 

 in the details of the gonopods of the male; e. g., in the spur to the pos- 

 terior blades of the first pair, with distal ends extending mesad instead 

 of first mesad and then abruptly caudad, and in the much broader pos- 

 terior blades at distal ends bending mesad toward each other instead of 

 caudad, etc. 



6. Spirobolus marginatus (Say). 



Two females taken at Painesville, Ohio, 1 September, 1918, by E. R. 

 Kalmbach. 



Chilopoda. 



7. Hemiscolopendra punctiventris (Newport). 



One specimen taken on James Island, South Carolina, 6 April, 1919, 

 by E. R. Kalmbach. 



8. Geophilus ethopus, sp. nov. 



Color fulvous of a slight orange tinge toward ends. 



Cephalic plate broad, but little longer than wide (about 11 :01). Widest 

 half-way between middle and anterior end. Anterior border very obtusely 

 angular. Caudal margin wide, truncate or very slightly excurved. No 

 frontal suture. Rather coarsely and densely punctate. 



Prebasal plate not exposed, the basal plate being overlapped by the 

 cephalic. Exposed portion of basal plate with width four and a fourth 

 times the median length. Claws of prehensors when closed about equal- 

 ling anterior margin of head. Prosternum and joints of prehensors un- 

 armed. 



Dorsal plates bisulcate, the sulci rather wide and shallow, posteriorly 

 indistinct. 



Anterior sternites with a deep median longitudinal sulcus, becoming 

 shallower in going caudad, not obvious in middle and posterior regions. 



First spiracles large, subcircular, being somewhat angled. All other 

 spiracles strictly circular, the second ones abruptly much smaller than 

 the first, the decrease in size of the others being very gradual in going 

 caudad. 



First legs only a little shorter and more slender than the second. Legs 

 of anterior region in general much shorter than those of the posterior 

 region. 



Last ventral plate narrow, parallel-sided, much longer than wide (about 

 3:2); caudal margin straight or a little incurved. Coxopleurae with 

 numerous small and moderate pores. 



Anal legs of male conspicuously crassate, the last two articles rather 

 abruptly less so than the others. Armed with a small straight claw. 



Pairs of legs of male type, forty-one. 



Length, 35 mm. 



Locality. — Alaska: Iditarod, June, 1918, collected by A. H. Twitchell. 



