140 
Psyche 
[March 
end; the tibia and tarsus seem to be quite distinctive (Figs. 18-23). 
Abdomen : typical of males of the genus ; without special modifications. 
Color in alcohol : carapace yellowish brown with cephalic region 
much darker; chelicerae nearly like carapace; sternum dusky gray 
against a yellowish brown background ; legs generally yellowish ; ab- 
domen yellowish in general with the dorsum showing a faintly in- 
dicated median longitudinal gray stripe and with faintly indicated 
grayish, narrow, transverse bars; the posterior end is a darker grayish 
with the venter a varied grayish and yellowish. The color pattern 
is quite variable among the paratypes available for comparison. 
Diagnosis. This appears to be another species closely related to 
Erigone tamazunchalensis Gertsch and Davis from Mexico but I 
believe that the rather distinctive features of the palp definitely 
establish it as a new species. 
Records. In addition to the male holotype, my collection now 
includes ten males from the Panama Canal Zone as follows: Barro 
Colorado Island, August, 1950 and July- August, 1954; Summit, Au- 
gust, 1954; Summit Gardens, July, 1954; Pedro Miguel, January, 
1958; Gatun, February, 1958. A male from Jamaica, Trelawney 
Parish, Glastonbury, November, 1957 and two males from the 
vicinity of the campus of the University of Puerto Rico at Mayaguez, 
January 29, 1964 are also placed here following a period during 
which they were regarded as representing another new species. 
Erigone dipona sp. nov. 
Figures 2 4-2 8 a 
Holotype. The male holotype is from Boquete, Panama, August 
4-1 1, 1954. The name of the species is an arbitrary combination of 
letters. 
Description. Total length 1.17 mm. Carapace 0.6 mm long; 
nearly 0.49 mm wide; with cephalic region steeply raised where it 
is nearly 0.33 mm tall; with a moderately well defined median longi- 
tudinal thoracic groove. Eyes: eight as usual in two rows; viewed 
form above, posterior row gently recurved and anterior row more 
definitely recurved. Ratio of eyes AME : ALE : PME : PLE = 
7:11 : 11 : 10. Outlines of eyes very obscure. AME very nar- 
rowly separated from one another, apparently by somewhat less than 
their radius; separated from ALE by slightly more than this distance 
and separated from PME by a little less than their diameter. PME 
separated from one another by a little less than two-thirds of their 
