389 



LAKTTS GELASTES. 



(SLENDER-BILLED GULL.) 



Larus gelastes, Licht. in Thienem. Fortpl. Vog. Eur. pt. v. p. 22. no. 351 (1838). 



Larus genei, De Breme, Rev. Zool. ii. p. 321 (1839). 



Larus leucocejjhalus, Boissonneau, fide Keys. & Bias. Wirbelth. Eur. p. 95 (1840). 



Larus tenuirostris, Temm. Man. d'Orn. 2nd ed. iv. p. 478 (1840). 



Xema lambruscMnii, Bp. Faun. Ital. Ucc. p. 135, and pi. (1840). 



Xema gelastes (Licht.), Boie, Isis, 1844, p. 192. 



Xema genei (De Breme), Boie, ut supra. 



Gavia gelastes (Licht.), Bruch, J. f. Orn. 1853, p. 102. 



Lanes columbinus, Golowatschow, Bull. Soc. Imp. Mosc. xxvii. p. 435, tab. 4 (1854). 



"Gelastes rubriventris, Vieill.," Bp. Naumannia, 1854, p. 216. 



Chroicocejohalus gelastes, Licht. Nomencl. Av. p. 98 (1854). 



Gelastes lambruschini, Bp. Cat. Parzud. p. 11 (1856). 



Larus subroseus, Heugl. Syst. Uebers. Vog. N.O.-Afr. p. 69 (1856). 



Larus brehmii, Heugl, ut supra (1856). 



Gelastes columbinus (Golow.), Bp. Consp. Gen. Av. ii. p. 227 (1857). 



Gelastes lichtensteinii, Bruch, J. fur Orn. 1857, p. 23. 



Larus lambruschini (Bp.), Schl. Mus. Pays-Bas, Lari, p. 28 (1863). 



Larus (Gelastes) gelastes (Licht.), Gray, Hand-1. iii. p. 116. no. 11007 (1871). 



Lanes (Gelastes) columbinus (Golow.), Gray, ut supra, no. 11008 (1871). 



" Lams grallarius, Mus. Lugd.," Heugl. Orn. N.O.-Afr. p. 1412 (1873). 



Larus arabicus, Hempr., Heugl. ut supra (1873). 



"Larus roseus, Gene," Heugl. ut supra (1873, nee Macg.). 



Figures notabiles. 

 Bp. 1. c. ; Golowatschow, I. c. ; Bree, B. of Eur. 



6 ad. dorso toto et stragulo delicate argenteo-cinereis, corpore reliquo toto albo, abdomine et subalaribus 

 pulchre rosaceo tinctis : remige extimo in pogonio externo fere ad apicem nigro et nigro apicato^ 

 primariis reliquis extus albis et in pogonio interno fusco-canis, omnibus nigro apicatis : rostro rubro : 

 iride pallide straminea. : marginibus palpebrarum et pedibus corallino-rnbris. 



Juv. haud rosaceo tinctis, pdeo et nuclia griseo tinctis : dorso, secundariis intimis et tectricibus alarum fusco- 

 cinereo notatis, remigibus magis nigro notatis, et cauda. versus apicem nigro fasciata. 



Adult hi summer (Spain, May). Mantle pale French-grey, palest on the centre of the back; first primary 

 with the outer web black, except near the tip, and tipped with black, the second, third, and fourth 



4a 



