. Bulletin. Science; Natural history; Natural history. Figure 2. Arbella endonata, new species. A, maxillary plates and carriers; B. anterior end in dorsal view; C, bilimbate seta; D, setiger 100 in anterior view; E, mandibles. (Chamberlin), and A. novecrinita asymmetrica (Crossland), by its possession of eye spots. Ara- bella semimaculata (Moore) and A. tricolor (Montagu) with 2-3 neuropodial acicula are dis- tinct from A. endonata which has only one neuro- podial aciculum. The specimens of Arabella iricolor reported by Hartman (1968) in Diopatra ornata are unfortunately no longer available.
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. Bulletin. Science; Natural history; Natural history. Figure 2. Arbella endonata, new species. A, maxillary plates and carriers; B. anterior end in dorsal view; C, bilimbate seta; D, setiger 100 in anterior view; E, mandibles. (Chamberlin), and A. novecrinita asymmetrica (Crossland), by its possession of eye spots. Ara- bella semimaculata (Moore) and A. tricolor (Montagu) with 2-3 neuropodial acicula are dis- tinct from A. endonata which has only one neuro- podial aciculum. The specimens of Arabella iricolor reported by Hartman (1968) in Diopatra ornata are unfortunately no longer available. Hooded setae characteristic of Arabella mutatis (Chaberlin) and transverse rows of fine teeth on the setae of A. pectinata (Fauchald) are key fea- tures not found in A. endonata. In addition all of the aforementioned species differ significantly in their maxillary formulae. special thanks to Walter Hoffman and Richard Tibby for making possible the collecting trip to the Port Hueneme area. LITERATURE CITED Allen, M. J. 1952. An Example of Parasitism among Polychaetes. Nature, 169:197. Fauchald, K. F. 1970. Polychaetous Annelids of the Families Eunicidae, Lumbrineridae. Iphitimi- dae. Arabellidae, Lysaretidae, and Dorvilleidae from western Mexico. Allan Hancock Monogr. Mar. Biol., (6): 120-146. ACKNOWLEDGMENTS I wish to thank Kristian Fauchald and Russel Zimmer for their assistance in preparing the manuscript. A Hartman, O. 1944. Polychaetous Annelids. Pt. 5. Eunicea. Allan Hancock Pac. Exped., 10:1-238. 1968. Atlas of the Errantiate Polychaetous. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Southern California Academy of Sciences. Los Angeles, Calif. : The Academy