New species of Rhabdochona Railliet, 1916 (Nemata: Rhabdochonidae) from Rainbow Trout in California Streams.

Three new species of Rhabdochona Railliet, 1916 are described and illustrated from Salmo gairdneri Richardson (rainbow trout) in freshwater streams in California: Rhabdochona californiemis n. sp., R.

Vector Capability of Xiphinema americanum sensu lato in California.

Seven field populations of Xiphinema americanum sensu lato from California's major agronomic areas were tested for their ability to transmit two nepoviruses, including the prune brownline, peach yellow bud, and grapevine yellow vein strains of tomato ringspot virus and the bud blight strain of tobacco ringspot virus. Two field populations transmitted all isolates, one population transmitted all tomato ringspot virus isolates but failed to transmit bud blight strain of tobacco ringspot virus, and the remaining four populations failed to transmit any virus. Only one population, which transmitted all isolates, bad been associated with field spread of a nepovirus.

Meloidogyne californiensis n. sp. (Nemata: Meloidogyninae), Parasitic On Bulrush, Scirpus robustus Pursh.

Meloidogyne californiensis n. sp. is described and illustrated from bulrush Scirpus robustus in California.

Morphometric Analysis of Anguina amsinckiae from Three Host Species.

Amsinckia species (fiddleneck) in the South Coast Ranges of California were surveyed to determine if any of the 12 different California species of Amsinckia are hosts of the nematode, Anguina amsinckiae (Steiner and Scott, 1935) Thorne, 1961. Previously only Amsinckia intermedia Fischer and Meyer was reported as a host of Anguina amsinckiae. The survey established that there are at least two additional hosts of Anguina amsinckiae: Amsinckia lycopsoides Lehmann and Amsinckia gloriosa Suksdorf.