1944] 
Millipeds 
175 
EU RYU RIDA 
Euryurus falcipes Loomis 
S-1949, Crittenden, Ky., August 6, 1943. 
POLYDESM1DM 
Polydesmus erasus Loomis 
M-1529, M-1777, and M-1793, Standing Stone Park, Tenn., 
July 5, 1942. 
Polydesmus serratus Say 
S-1079, Greenlea, Va., July 30, 1943; S— 12 70, Monterey, 
Va., July 30, 1943; S— 1332 and S-1500, Durbin, W. Va., Aug. 
1 and 2, 1943. 
Polydesmus moniliaris Koch 
S— 141 7 and S— 1585, Durbin, W. Va., Aug. 1 and 2, 1943; 
S-1643, Mt. Lake, Va., August 3, 1943. 
Lasiolathus virginicus Loomis 
S— 194 1 , Crittenden, Ky., Aug. 6, 1943; all young specimens. 
STIODESMIDM 
Ilyma cajuni sp. nov. 
Seven specimens, including three mature males (1 the type) 
collected under bark of orange trees at Venice, La., February 
17, 1944 by Morris Gordon, Division of Foreign Plant Quaran- 
tines, Bureau of Entomology and Plant Quarantine. 
Diagnosis: The great development of the two median rows 
of tubercles of the penultimate segment into a backwardly pro- 
duced lobe that far surpasses the tip of the last segment distin- 
guishes this milliped of the Cajun country from its Mexican 
relatives. 
Description: Body white or light yellow but the vertex of 
head and metazonites with what appears to be a light but gen- 
eral accumulation of dark organic matter adhering to the sur- 
face; dorsum high and very strongly arched with lateral keels 
projecting outward almost horizontally from very low on the 
sides, their outer extremities at the same level as the coxae; 
length of male 7.5 mm., female 8 mm. 
Head with vertex abruptly raised on either side of the median 
line into a narrow tongue-like elevation rounded in front ad- 
jacent to the antennal socket with its outer limit behind con- 
