751 Recently published Ornithological Works. 
axillaris) ; Rhoporchilus (type Formicivora speciosa); Myrm - 
orchilus (type Myiothera strigilata ) ; Myrmoderus (type 
Myiothera loricata)] Phcenosticius (type Phlegopsis macclean - 
nani); Hylophylax (type Conopophaga ncevioides); Oropezus 
(type Grallaria rufula) ; and Hylopezus (type Grallaria 
perspicillata). 
The 7 new genera of Furnariidae are Premnornis (type 
Margarornis guttata ) ; Drioctistes (type Thripophaga 
sclateri) ; Phaceloscenus (type Anumbius striatocollis) ; 
Schoeniophylax (type Sylvia phrygonophila) ; Acrorchilus 
(type Synallaxis erythrops ) ; Hyloctistes (type Philydor 
virgatus) ; and Rhopoctites (type Philydor rufo-brunneus). 
The 11 new species and subspecies are named Automolus 
cervinigularis hypophceus (Costa Rica) ; Acrorchilos erythrops 
griseigularis (Colombia) ; Synallaxis albescens hypoleuca 
(Panama) ; Dendrocolaptes validus costaricensis (Costa Rica); 
Xiphorhynchus flavigaster yucatanensis (Yucatan); X.puncti- 
gula insolitus (Panama) ; X. lacrymosus rostratus (Colombia); 
Picolaptes affinis neglectus (Costa Rica) ; Campylorhamphus 
chapmani (S. America) ; Myrmeciza zeledoni (Costa Rica) ; 
and M. berlepschi (Ecuador). 
Here we have, we suppose_, diagnoses of the new genera, 
species, and subspecies introduced by Mr. Ridgwav in the 
fifth volume of his great work on the Birds of North and 
Middle America, upon the preparation of which he is now 
engaged. The fourth volume was published in 1907 (see 
‘Ibis/ 1908, p. 190). 
102. Ridgway on new Forms of Cypselidse and Trochilidae. 
[Diagnoses of new Forms ofMicropodidse and Trochilidae. By Robert 
Ridgway. Proc. Biol. Soc. Washington, xxiii. p. 53.] 
The new genus and the ten new species and subspecies of 
Swifts and Humming-birds are named as follows:— Xesophlox , 
gen. nov. (type Trochilus evelgnce ) ; Streptoprocne zonaris 
mexicana (Mexico) ; Chcetura richmondi (Costa Rica) ; 
Cypseloides niger jamaicensis (Jamaica) ; C. n. costaricensis 
(Costa Rica) ; Phaethornis longirostris verce-crucis (Yera 
Cruz) ; P. adolphi saturatus (Guatemala to Panama) ; 
