The Collaborative International Dictionary of English v.0.48:

Consanguineal \Con`san*guin"e*al\, a.
   Of the same blood; related by birth. --Sir T. Browne.
   [1913 Webster]

WordNet (r) 3.0 (2006):

consanguineal
    adj 1: related by blood [syn: akin(p), blood-related,
           cognate, consanguine, consanguineous,
           consanguineal, kin(p)]