Evidence is presented demonstrating the existence of a type of chromospheric structure in the f'orm of bright streaks. These are extensions across the solar disk of elongated bright mottles which originate in the central regions of clusters of mottles. They are best observed on good filtergrams at l-l~a :k 0.5 ~ through comparison with filtergrams at other positions on the line profile. Their length can be as much as 200 sec of arc. The bright streaks appear to be predominantly horizontal loop structures, while the well-known spicules are mainly vertical structures. A bright streak may be ~.ell defined or rather diffuse along its length, and many of them are accompanied by darker boundaries or envelopes. ]t is usual to find a loop of bright streak bridging the central areas of two mottle clusters. It seems that the observed panern in the space between the chromospheric network at Hx 0.5/~ results partly from thc interactions of the bright streaks of different stagcs of evolution traversing the area in differcnt directions.
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