( i^7 ) 
The boats take up their position as shown in the diagram. 
Small nets are raised in each boat so that if the fish try to 
jump over the encircling net they strike the small nets and 
fall into the boats. Many of the fish imprisoned in the area 
find their way into the 3Iadi valai. 
Proclamation in the Government Gazette of April 5, 1907, 
prohibits the use of this net in the Jaffna lagoon. 
This net is prohibited in parts of the Jaffna lagoon, and in 
parts of the sea between Jaffna and Mannar by the Procla- 
mation of April 12, 1907. (See also Government Gazette of 
December 17, 1909.) 
65. — Suda dela (Sinhalese) ; Sudai valai (Tamil). 
Locality : Negombo. 
Description : A vertical net of four pieces each 10 j^ards long. 
There are floats along the upper side and weights along the 
bottom. 
Dimensions : Length, four pieces, each 10 yards long ; 
depth, 3 yards ; mesh, 1 inch. 
Method of Use : Used in the open chamiel, and is worked 
from two catamarans. It first lies in a straight line and then 
each catamaran describes a quarter circle and eventually they 
meet, and the net encloses a number of fish. 
Used in the Negombo lagoon. Not the same as the Suda del 
of Chilaw. 
Under the by-laws published in the Government Gazette of 
December 5, 1913, this net in its present form is prohibited, 
as no net with a mesh of less than 2 inches is permitted. This 
net was used by the Sea street fishermen, and was objected to 
by the Munnakarai people, on the grounds that owing to its 
small mesh it caught immature fish. The Marine Biologist 
upheld the objection. 
66. — Aiya valai (Tamil) ; Aiya del (Sinhalese) oi Kodduwa 
valai (Tamil) ; Kodduwa del (Sinhalese). 
Locality : Negombo. 
Fish caught : Large fish. 
6(13)22 15 
