. Allan Hancock Pacific expeditions. Scientific expeditions. NO. 1 SOOT-RYEN : THE FAMILY MYTILIDAE 21. Fig. 1. Mytilus edulis Linne. Yaquina Bay, Oregon. Common thick-shelled form. Fig. 2. Mytilus edulis Linne. Mission Bay, San Diego. High, thin- shelled form with small anterior adductor {diegensis Coe). Fig. 3. Mytilus californianus Conrad. San Pedro. Note the place- ment of the anterior adductor. Fig. 4. Choromytilus falliopunctatus (Carpenter). Salina Cruz, Oaxaca, Mexico. Anterior retractor placed behind the middle of the ligament; no anterior Please note that these images are


. Allan Hancock Pacific expeditions. Scientific expeditions. NO. 1 SOOT-RYEN : THE FAMILY MYTILIDAE 21. Fig. 1. Mytilus edulis Linne. Yaquina Bay, Oregon. Common thick-shelled form. Fig. 2. Mytilus edulis Linne. Mission Bay, San Diego. High, thin- shelled form with small anterior adductor {diegensis Coe). Fig. 3. Mytilus californianus Conrad. San Pedro. Note the place- ment of the anterior adductor. Fig. 4. Choromytilus falliopunctatus (Carpenter). Salina Cruz, Oaxaca, Mexico. Anterior retractor placed behind the middle of the ligament; no anterior 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 Allan Hancock Foundation. Los Angeles : Allan Hancock Foundation for Scientific Research, University of Southern Calif. Press


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