Seven specimens of Lolliguncula (Lolliguncula) argus, were collected in the shrimp fisheries of the Gulf of California and five specimens from the western coast of Baja California Peninsula, deposited in the Santa Barbara Museum of Natural History (USA), are examined and reported. These records expand species geographic distribution range for approximately 950 km and report the maximum size of mantle length 38.8 mm for males and 60.8 mm for females. Morphometric data of the 12 collected specimens are presented, and species funnel organ and statoliths are described.New records of Lolliguncula (Lolliguncula) argus are reported from the Gulf of California and the western coast of the Baja California peninsula. This expands its known distribution range by more than 950 km. In addition, new records of maximum size of mantle lengths are reported: 38.8 mm for males and 60.8 mm for females. Morphometric data of the collected specimens are presented and the funnel organ and statolith are described.