  We present spectra of six Type Ia and two Type II supernovae obtained in June
2002 at the William Herschel Telescope during a search for Type Ia supernovae
(SNIa) at intermediate redshift. Supernova type identification and phase
determination are performed using a fitting technique based on a Xi2
minimization against a series of model templates. The spectra range from
z=0.033 to z=0.328, including one spectroscopically underluminous SNIa at
z=0.033. This set of spectra significantly increases the sample of
well-observed type SNIa supernovae available in the range 0.15< z <0.35.
Together with the twelve supernovae observed by our team in 1999 in the same
redshift range, they form an homogeneous sample of seventeen type Ia supernovae
with comparable signal-to-noise ratio and regular phase sampling in a still
largely unexplored region of the redshift space.
