NORTHWESTERN MEXICO. 309 



237. Symphemia semipalmata (Gm.). 

 Mazatlan, Grayson, Bischoff. 



"A common species the entire year. 



238. Gambetta melanoleuca (Gm.). 

 Colima, Xantus. 



239. Ganibetta flavipes (Gm.). 

 Mazatlan, Grayson. 



« Not abundant ; met with during the -winter months." 



240. Rhyacophilus solitarius (Wils.). 

 Mazatlan, Grayson. 



« Common." 



241. Tringoides macularius (Linn.). 

 Colima, Xantus. 



242. ITumenius longirostris Wils. 



« " Finsch, Abh. nat. Ver. zu Bremen, 1870, p. 363. 



Mazatlan, Grayson. 



243. JNumenius hudsonicus Lath. 



« " Finsch, Abh. nat. Ver. zu Bremen, 1870, p. 363. 



Mazatlan, Grayson ; Eio Zacatula, Xantus. 



Fam. TAHTALID-ffil. 



244. Ibis alba Linn. 

 Mazatlan, Grayson. 



245. Ibis guarauna Linn. 



Mazatlan, Grayson; Manzanilla Bay, Xantus. 



" Numerous, and common at all seasons." 



246. Tantalus lomlator Linn. 

 Mazatlan, Grayson. 



"Abundant at all seasons." 



Fam. Plataleid^. 



247. Platalea ajaja Linn. 



« « Fmsch, Abh. nat. Ver. zu Bremen, 1870, p. 358. 



Mazatlan, Grayson. 



« Common throughout the summer months; less so during the winter months, although it may often be 

 met with in small numbers." 



MBMOIBS BOST. SOO. HAT. HIST. VOL. H. 78 



