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234 THE CONDOR Vol. XXl the body proper but also the erissum, the basal half of the reetriees, the axil- lars, and the lining of the wing. There seems to be no sexual difference in re- spect to the depth of this blush. Slightly the pinkest happens to be a female (no. 29579). Coues, curiously, states (loe. eit.) that "in w?nter" there is "no pink blush of under parts". Ridgway, by implication, says that there is; and our birds are all more or less pink. W]?IOHTS (IN GRAMs) AND M?ASUR]?M]?NTS (IN MILLIM]?r]?RS) OF SIlVaN l?XAMPL]?S OF S?'?A'A ?L?AA'S FROM MORRO, CALIFORNIA NO. MUs. Vert? Zool. Sex Date 29579 9 Sept. 22, 1918 2958O ? Sept. 27, 1918 29581 ? Sept. 28, 1918 29582 9 Sept. 28, 1918 29583 ? Sept. 28, 1918 29577 . ? Sept. 29, 1918 29578 ? Oct. 2, 1918 Average Collector ? ? ? ? ? H. G. ?nite 226.1 297 151 69.2 44.9 35.2 H. G. White 227.2 306 159 64.9 51.1 38.5 H. G. White 240.0 298 129 57.7 43.3 31.0 H. G. White 209.9 289 ?132 55.2 41.7 31.4 H. G. White 240.0 291 139 61.3 44.3 32.5 J. Dixon 262.8 317 158 68.7 53.7 37.7 J. Dixon 216.8 292 133 60.3 45.0 33.0 231.8 298.6 143.0 61.0 46.3 34.2 n.o -9.0 30.0 11.3 30.7 29.8 10.8 28.6 gl.7 9.4 27.6 28.5 10.5 29.7 29.7 ...... 30.3 31.6 11.0 29.7 30.2 10.7 29.4 30.2 In measurements, as shown in the table given herewith, the Morro series h'olds closely to Ridgway's specifications (loe. eit., p. 473). It will be noted that the angi e of the lower mandible, marking posterior end of gonys, is far forward of the anterior end of .nostril, so ruling out the possibility that our birds, or at least ?hose with yellowish bills, might be representative of the spe- cies Sterna eurygnatha of eastern South America. This possibility suggested itself because this latter species is described (Saunders, Cat. Birds British Mus., xxv, 1896, p. 85). as having a "lemon-yellow" bill, and the "hind parts of the tarsi, the soles, and and the claws dull yellow." Eurygnatha is stated to be identical with elegans except as to the color features just ?eferred to and as to the extent of the gonys, which terminates posteriorly "immediately below or very little in front of the anterior portion of the nostril". On the basis of. sum-total of characters, Sterna elegans is a sharply set-off species, and no diffi- culty need be experienced in identifying specimens in hand. Measurements alone, as given in the accompanying table, will suffice. In conclusion, the status of Sterna elegans in California, so far as known to date, may be stated as follows: Rather uncommon and probably irregular fall visitant northward along the sea coast ?s far as San Francisco Bay. Defi- nite stations and dates.of occur"?ence: Pacific Beach (near San Diego), Sep- tember 21; vicinity of Morro, September 22 to October 4; Monterey Bay, Sep- tember 22 to October 29; San Francisco Bay (date not recorded). Berkeley, California, September 14, 1919.