THE SPIDERS OF EPPING FOREST. 215
13. Patella III. at least as long as patella IV. .. .. Euophrys
Patella III. shorter than patella IV. ., .. 14
14. Palpus of male with femoral apophysis ., .. Heliophanus
Palpus of male without femoral apophysis .. .. 15
15. Caput about half the length of thorax .. .. Phlegra
Caput much more than half the length of thorax .. Attus
Genus SALTICUS, Latr,
[Epiblemum, Hentz, Cambr. List.]
This genus includes several small spiders with the abdomen
of a blackish tint ornamented with diagonal bands of white
scales.
Salticus scenicus, Clerck. The well-known "Zebra-
spider" of our gardens. Common in many parts of the Forest
upon palings.
Salticus cingulatus, Panz. A few specimens found upon
willow trunks on Edmonton Marshes.
A third species is found in Britain, S. affinitatus, Cambr.
Genus MARPESSA, C. L. Koch.
Large Salticids, usually of plain tints, but nevertheless very
beautifully marked. They are not easily seen when motionless
upon palings on account of their striking resemblance to splashes
of mud.
Marpessa muscosa, Clerck. Upon palings in Wanstead
Park, and several other parts of the Forest.
Two British species, M. pomatia, Walck, and M. melanognatha,
Luc. have not yet occurred in the Forest area.
Genus HELIOPHANUS, C. L. Koch.
Many of the species of this genus are of various tints of dark
metallic green. They are very active spiders, and may usually
be found upon sunny days running amongst low plants and
adroitly jumping from leaf to leaf.
Heliophanus cupreus, Walck. This species has occurred
at Loughton, Theydon Bois, and Epping.
Two other British representatives of this genus, H. expers
Cambr., and H. flavipes, C. L. Koch, have not been definitely
recorded from the Forest, but several immature specimens taken
near Loughton certainly had the appearance of belonging to the
last-mentioned species.
Genus BALLUS, C. L. Koch.
Small, dull-coloured Salticids, of a very flattened form, found