Recently published Ornithological Works. 301 



with a list of its members. The appended memoirs and papers 

 all relate to Bavarian ornithology, "with the exception of 

 Dr. Parrot's narrative of his recent expedition to Egypt and 

 his accouufr of its results, which "we have noticed under that 

 author's name. He appears to be one of the most active 

 members of the Union, to which we wish every success. 



56. Ridgway on new North-American Biro's. 



[(1) Descriptions of new Genera, Species, and Subspecies of American 

 Birds. By Robert Ridgway. Pr. Biol. Soc. Washington, xvi.'p. 105 

 (1903). 



(2) Diagnosis of some new Forms of American Birds. By Robert 

 Ridgway. T. c. p. 167.] 



These " new forms " are to be included in the third volume 

 of Mr. Ridgway's ' Birds of North and Middle America ' 

 (see ' Ibis/ 1903, p. 261), but as the issue of that volume 

 has been unavoidably delayed, it has been thought better to 

 publish the descriptions at once : — Budytes flavus alascensis 

 (Western Alaska), four new genera of Swallows — Alopoche- 

 lidon (type Hirundo fucata) , Orochelidon (type Petrochelidon 

 murina), Diplochelidon (type Hirundo melanoleuca) , and 

 Lamprochelidon (type Hirundo euchrysea), — Stelgidopteryx 

 salvini (Mexico and Central America), Vireosylvia gilva 

 hrewsteri (N.W. Mexico), V. josephce costaricensis (Costa 

 Rica), Vireo huttoni cognatus (Lower California), V. huttoni 

 mexicanus (South Mexico), V. belli arizona (Arizona), 

 Pachysylvia ochraceiceps pallidipectus (S. Honduras to 

 Chiriqui), Vireolanius pulchellus viridiceps (Veragua), Lanius 

 ludovicianus mearnsi (San Clenieute Island), Aphelocoma 

 unicolor coflestis (Guatemala), Bceolophus inernahis rcstrictus 

 (California), B. i. murinus (Paget Sound), Psaltriparus 

 minimus saturatus (Puget Sound), Chanusa fasciata riijula 

 (Central California), Polioptila nelsoni (S.E. Mexico), 

 P. bairdi (W. Nicaragua and Costa Pica), P. superciliaris 

 magna (Costa Rica), Telmatodytes palustris iliacus (Missis- 

 sippi Valley), and Heleodytes nelsoni (Mexico). 



In a second paper Mr. Ridgway characterizes nine a new 

 forms " in addition to those described in the previous paper. 



SKR. VIII. — VOL. IV. Y 



