E d 
iraneae ARCHEOLOGY IN BRITISH GUIANA 67 
The only restorable vessel from N-1 is an Aruka Incised bowl, now 
in the collections of the British Guiana Museum, Georgetown. It 
has the following characteristics : 
Aruka Incised Bowl (pl. 22).—All sherds were found except the 
annular base, but wear showed this to be an old break. The remain- 
ing portion is 7.2 cm. in diameter and 8 mm. high. The vessel walls 
slope outward to a maximum diameter of 18.5 cm. at a height of 
4. cm., then curve inward to a constricted mouth 9 cm. in diameter 
with a flattened lip. Total height is 10 cm. All features of paste 
and decoration are typical of Aruka Incised. The interior is 
smoothed and quite even; the exterior has been polished, giving a low 
luster. The surfaces are light tan except where small fire clouds 
darken one side and half of the bottom. Decoration is on the ex- 
terior of the insloping upper wall and consists of bold, broad (2-3 
mm.), U-shaped incisions ranging in depth from 1-3 mm. The lines 
are not equally spaced or regularly parallel, and the freehand execu- 
tion of the curved lines and spirals gives a pleasing effect. 
N-4 : KORIABO POINT 
A short distance below its junction with the Koriabo River, the 
Barima River makes a sharp bend creating a point on the right bank. 
N-4 is on a 4-meter high bank above this bend, separated from the 
point by a low area (fig. 4). A small creek flows along the base 
of the high bank, emptying into the river just below the site. Habi- 
tation refuse extends 25 meters inward from the Barima River and 
35 meters along the bank. Recent clearing for a garden left the 
whole area covered with a tangle of low secondary growth sprinkled 
with lemon, papaya, and banana trees. 
Adjacent to the east (inland) edge of the habitation area is a large 
shell midden, about 20 meters in diameter and rising 5 meters above 
the natural surface of the ground. The top was originally slightly 
higher but had been flattened off to plant 6 lemon trees. This deposit 
was tested by digging small holes on the summit and at every meter 
contour on the slopes. The composition was uniform throughout: 
burned and unburned shell (predominantly Neritina zebra Bru- 
guiére), ash, fire-burnt stones, quartz spalls, a few animal and fish 
bones, with very little dirt intermixed. Weathering had caused ce- 
menting together of the shell into hard masses. A few Mabaruma 
Phase sherds were found on the surface and in some of the test holes. 
No artifacts of the Alaka Phase were encountered, suggesting that 
this midden may have been accumulated by the occupants of the adja- 
cent habitation site. However, none of the other Mabaruma Phase 
sites contain any shell refuse. 
This is the only Mabaruma Phase site found on the Barima River. 
However, nearby Koriabo Phase sites contain much Mabaruma Phase 
