The palmar digital veins (or volar digital veins) on each finger are connected to the dorsal digital veins by oblique intercapitular veins.
Some sources distinguish between the "proper palmar digital veins", which are more distal, and the "common palmar digital veins", which are more proximal.
References
This article incorporates text in the public domain from page 661 of the 20th edition of Gray's Anatomy (1918)
