Two crabs, Xandaros sternbergi (Rathbun 1926) n. gen., and Icriocarcinus xestos n. gen., n. sp., from the Late Cretaceous of San Diego County, California, USA, and Baja California Norte, Mexico. Transactions of the San Diego Society of Natural History, 21(15) 1988: 245-257. 252 [Zoological Record Volume 124]