74 BULLETIN 46, UNITED STATES NATIONAL MUSEUM. 



S. Craspedosoma flavidum, sp. nov. 



Yellowish, brown, feet and antennae lighter. Robust, segments not 

 constricted, lateral carina;, small, and body strongly resembling that of 

 Campodes. Antenna; longer than width of body. Ocelli 12-14, distinct, 

 arranged in a triangular patch and in 5 or 6 series. Dorsal plates 

 rather smooth, setigerous granules small, seta; rather large. Male feet 

 crassate, those of female slender. Length of body 5.8 mm ; width ,7 mm . 



Habitat. — Okolona. 



This species strongly resembles a Campodes. In life the individuals 

 are a dusky yellow. This description is based upon a male and female. 



9. Craspedosoma carinatum Bollman. 



ISTot common in the Fourche bottoms, south of Little Rock; also 

 found on the grounds of the Deaf Mute Asylum. 



10. Leptodesmus hispidipes (Wood). 

 Abundant everywhere. 



Very common throughout the State. All specimens obtained were 

 young, but the shells of many adults were found. 



11. Euryurus evides Bollman. 



Paradesmus evides Bollman, Ent. Amer., II, 229, 1887 (Winona, Minn.). 



Common over the State. Specimens agree Kith those from Minnesota. 



12. Chaetaspis albus Bollman. 



Chwtasjns albus Bollman, Ent. Amer., Ill, 46, 1887 (Bloomington, Ind.). 



One specimen obtained at Little Rock. 



13. Polydesmus minor, sp. nov. 



Dark shining brown, lighter beneath. Moderately slender, depressed, 

 slightly acuminate anteriorly and posteriorly, smooth, very sparsely 

 pilose (setigerous). Antenna; equal to width of body, subclavate. 

 First dorsal plate wide, angles not or but slightly produced, not toothed, 

 tubercles not distinct, except lateral. Other dorsal plates with pos- 

 terior angles produced, especially posteriorly; lateral margins 3 or 4 

 toothed, indistinct posteriorly, tubercles distinct, arranged in two rows 

 of four each, anterior border indistinctly divided into two, posteriorly, 

 the last row of tubercles project beyond border of segments. Legs 

 long, crassate in male. Male: Copulation foot very similar to serratus; 

 ventral plates produced into a short, pilose lobe anteriorly. Length 

 of body 10-14 mm , width 1.5-1.8 mm . 



Habitat. — Little Rock. 



This species is described from a number of specimens found in the 

 low lands south of Little Rock. 



14. Polydesmus pinetorum, sp. nov. 



Very similar to P. serratus, but the general color paler and size smaller. 

 Tuberculation not so distinct, sides of first segment 1 toothed, other 



