Authors of articles longer than a thousand words will receive fifty reprints of their publications free of cost. If more than this are desired, the order should be given with the return of the proof sheets. Extra copies and special covers or special paper will be furnished at cost. Authors of short contributions will receive a few extra copies of the number containing their articles. Manuscripts should be sent by express or registered mail. Address all communications to The Journal of Entomology and Zoology William A. Hilton, Editor Claremont, California, U.S.A. New Polychaetous Annelids From Laguna Beach, California RALPH V. CHAMBERLIN In a very interesting collection of annelids from Laguna Beach transmitted to me for study by Prof. Hilton, the apparently previously undescribed forms listed below are represented. As a comprehensive report on the annelids of the region to follow further explorations and collecting is in contemplation, I am giving here only such preliminary accounts of the new forms as are thought sufficient for their identification in the local fauna. The types of all these species are in the Museum of Comparative Zoology at Cambridge. POLYNOIDAE _Halosydna latior_ sp. nov. A species proportionately broader over all than the usual forms of the common _H. insignis_, _californica_, and _pulchra_. It is characterized by elytra not only closely imbricated along each side but also broadly overlapping in the middle line throughout the length. The elytra in general are unusually elongate in an oblique direction, the long axis running from the outer end cephalomesad; the outline subelliptic, the caudomesal edge broadly convex, the opposite one a little incurved at middle. The entire surface of elytra subdensely covered with very small rounded brown nodules or tubercles; within the middle region, just behind the edge of the preceding overlapping elytron, a number of much larger paler tubercles which in the type are present on all excepting the last pair. Elytra extending to outer ends of parapodia. Eighteen pairs of elytra present. Prostomium subangularly bulging on each side, the anterior eye at the angle, the posterior eye removed far caudad, by about half the greatest width of the prostomium. Paired anterior prolongations of the prostomium very long, as long as the median length of the prostomium back to level of posterior eyes, distally clavate. Median ceratophore much stouter than the lateral prolongations and exceeding them by more than a third in length. Median tentacle long, nearly attaining end of palpi; slender, narrowing distad, only slightly thickened subapically, with the usual slender tip which is of moderate length. Lateral tentacles much shorter, their tips reaching only to near middle of light region between proximal black region and subapical black ring of median tentacle. Tentacular cirri resembling median tentacle in form, being narrowed distad with subapical enlargement