80 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 113 
joints but not conspicuously so, as in G. parmor; postantennal pit 
nearly oval and very close to the antennal socket (fig. la). Segment 
1 longer on dorsum than in parvior, the sides slightly more abruptly 
rounded. Ensuing segments with lateral striations weakly impressed; 
lower posterior corners not produced into acute angles, except very 
small ones on about three segments preceding the last (fig. 1b) ; pleurae 
with no apparent striations. Last segment short and broad, with 
rounded lateral angles, the posterior margin evenly convex (fig. 1c). 
Glomeridesmus parvior Chamberlin 
Ficure 1d-f 
Glomeridesmus parvior Chamberlin, Bull. Univ. Utah, vol. 30, No. 9, p. 4, 1940. 
Male, Barro Colorado Island, Canal Zone, Mar. 8-15, 1958, E. M. 
and H. F. Loomis; male, Pifia area, Canal Zone, Mar. 18, 1958, 
H. F. Loomis. 
Since the original description gave only color, body size, and com- 
parative size of the penes, as contrasted with other species, the follow- 
ing characters are given: 
Head with antennae separated by slightly less than twice the diame- 
ter of one of the sockets, the basal joints slender but joints 4, 5, and 
6 noticeably thicker; postenicennal pit subtriangular, well removed 
from the antennal pecker (fiz. 1d). | 
Segment 1 with sides less abruptly rounded than in G. latus, the 
dorsum relatively shorter. Ensuing segments with lateral striations 
pronounced; posterior end of body narrowing more rapidly than in | 
latus; segments 13 to 19 with lower posterior corners increasingly | 
produced (fig. le); pleural plates, at midbody at least, smooth, shin- | 
ing and with no apparent striations. Last segment quite narrow, | 
without posterior corners but with the posterior margin strongly 
rounded throughout (fig. 1f). 
Family Chytodesmidae 
Docodesmiella, new genus 
Type sprctes: Docodesmiella insularis, new species, by present | 
designation and monotypy. 
Draenosis: The minute size, the 19 segments, and the moniliform-. 
clavate antennae with joint 6 largest are noteworthy characters. | 
Differing further from Docodesmus, to which it seems related, in 
having the lateral keels with a posterior margining rim instead of | 
being lobed and in the outer margins of keels of segment 5 being 
distinctly four lobed instead of three lobed, but all other keels lobed | 
as in Docodesmus, 
