MILLIPEDS OF PANAMA—LOOMIS 111 
rectangular and nearly twice as long as wide, thus longer than in 
E. biolleyi, and with tooth at lower anterior corner larger. 
Segment 1 with sides evenly rounded, a fine raised rim extending 
from lower corner of eye only to lower limit of side. Segment 2 
with sides almost like those of ensuing ones, with only a faint shoulder. 
Surface of segments slightly dulled, rather coriaceous with tiny 
punctations and very fine, short aciculations; transverse sulcus strong 
and impressed on all but a few posterior segments, surface behind it 
convex; secondary sulcus much more evident and also continuous 
across dorsum; pores large, followed by a deep, straight sulcus almost 
reaching posterior margin of segments except at rear end of body; 
scobinae with deep, reniform pits separated by twice their diameter; 
last segment exceeded by anal valves, which are somewhat compressed 
with rather prominent margins; preanal scale large, broadly rounded 
at apex, sides slightly emarginate near base. 
Gonopods as shown in figure 6g—h; the posterior ones rather similar 
to those of 7. biolleyi but noticeably shorter and stouter; median plate 
with apical portion much more narrow. Coxae of male legs 3, 4, and 
5 produced into rounded conic lobes; third legs to those near middle 
of body with terminal joint inflated beneath. 
Genus Oxypyge Silvestri 
Oxypyge Silvestri, Boll. Mus. Zool. Univ. Torino, vol. 11, No. 254, p. 4, 1896. 
Oxypyge benedictus Chamberlin 
FiIGuRE 6i-j 
Oxypyge benedictus Chamberlin, Proc. Biol. Soc. Washington, vol. 38, p. 40, 1925. 
Canal Zone, many specimens from following locations: Barro Col- 
orado Island, June 6, 1923, O. F. Cook and H. F. Loomis and March 
8-15, 1958, E. M. and H. F. Loomis; Pifia area, March 18, 1958, 
H. F. Loomis. 
Gonopods shown in figure 67-7. 
Genus Rhinocricus Karsch 
Rhinocricus Karsch, Zeitschr. Ges. Naturwiss., vol. 54 (ser. 3, vol. 6), p. 68, 1881. 
Rhinocricus insulatus Chamberlin 
Fiacures 6k-l, 7a-b 
Rhinocricus insulatus Chamberlin, Proc. Biol. Soc. Washington, vol. 38, p. 39, 
1925. 
Rhinocricus williamsit Chamberlin, Bull. Univ. Utah, vol. 30, No. 9, p. 15, 1940. 
Eurhinocricus insulatus Hoffman, Proc. Biol. Soc. Washington, vol. 68, p. 34, 
1955, 
