Recently published Ornithological Works. 153 



complicated synonyms of the three species of Scotothorus 

 (nuper Heteropelma) , and gives the new name S. sutphurei- 

 venter to one of them from Matto Grosso and Bolivia. 



Proceeding to the Tyrannidae the author describes the 

 unknown male of Hapalocercus ho 1 1 audi Scl., which has a 

 very curious wing-structure, and characterizes as new 

 Euscarthmus nattereri from a Nattererian specimen from 

 Parana. The difficult genus Rhynchocj/clus is now attacked, 

 and two new subspecies, R. poliocephalus sclateri and R.flavi- 

 ventris borbee, are separated. 



Among the Formicariidae the author makes many critical 

 remarks on the species of the genera Herpsiluchmus , Myrmu- 

 therula, Myrmecizo , I'h/ogopsis, Dysithamnus, and Thamno- 

 philus, and describes as new species or subspecies Herpsilochmus 

 roraimte, Myrmotherula berlepschi, Than/nop hi/ us nigricristatus 

 difficUis, Gra/laria varia cinereiceps, ;uid G. berlepschi. 



Of the family Dendvocolaptidae, Picolaptes bivittatus bahia 

 and Philydor rufipileatus maynanus are described as new. 

 Finally, the South-American Mocking-birds are revised, and 

 two new subspecies, Mimas saturninus f rater and M. longi- 

 caudatus punensis, are proposed. 



14. Hellmayr on the Paridse, Sittidse, and Certhiidae. 



[Das Tierreich, &c. Lief. 18. Aves. Paridae, Sitticlse, und Cer- 

 thiidae, bearbeitet von C. E. Hellmayr in Miinchen. Berlin : Friedlander 

 u. Sohn, 1903. Pp. 256. Price 17s.] 



The last part of the ' Tierreich ' relating to Birds was 

 Dr. Finsch's " Zosteropidas " (see < Ibis/ 1902, p. 661), dated 

 1901. After more than a year's interval comes the present 

 part, from a young and ardent ornithologist now settled, we 

 hope definitely, at Munich, where a votary of our special 

 branch of zoology was much required. It is devoted to 

 three families well known to all of us — the Tits, Nuthatches, 

 and Tree-creepers. Of these the Paridse (under which head 

 the author arranges the Regulinse, Polioptilinae, and Para- 

 doxornithinae, besides the typical Parinae) are by far the 

 most numerous, and occupy the greater part of the volume. 

 We are pleased to see that the numerous subdivisions into 



