222 Bibliographical Notices. 



Thattea, to each of which it approaches in diiFerent particulars of its 

 structure ; and gives in a note some additional information on the 

 subject of the latter genus, extracted from the MSS. of Dr. Kcenig, 

 by whom alone it has yet been found, 



[We reserve the conclusion of this review^ for our next Number. 

 — Edit.] 



Icones Avium, or Figures and Descriptions of new and interesting 



Species of Birds from various parts of the World. By John Gould, 



F.L.S. Folio. August 1838. 



Part II. Monograph of thj: Caprimitlgid^. 



At the meeting of the British Association in 1837 Mr. Gould was 

 requested to prepare and write a monograph of the genus Caprimul- 

 gus, Linn., the species of which, from the great accession to their 

 numbers from various parts of the world, were comparatively un- 

 known, while the very singular forms that had been discovered and 

 the curious natural habits of the group rendered its history a subject 

 of considerable interest to the ornithologist. Mr. Gould in the mean 

 time contemplating a voyage to Australia, and having sailed for that 

 land about nine months after the allotment of his task, could only 

 commence the work and have the first part ready to be laid before 

 the meeting of the British Association at Newcastle, which both does 

 ample credit to the talents of its author, and depicts some of the most 

 remarkable forms in the whole range of ornithology. It has been 

 made a continuation of the ' Icones Avium,' the first part of which 

 we noticed in a former number (No. III. p. 223), and the plan adopt- 

 ed has been to figure and describe each species, with the intention of 

 entering into their history and habits, as a prefatory or concluding 

 essay. 



Part I. contains beautifully executed lithographic figures of eight 

 species, from which Mr. Gould has made no less than five new generic 

 names. These we cannot criticise until we see the whole of his pro- 

 posed arrangement. They are Amhlypterus anomalus, G., a small 

 species, supposed to be found in Demerara, and remarkable for the 

 curved and sickle form of the quill feathers. Nyctydromus Derby anus, 

 G., a South American species, one of those with lengthened tarsi, 

 and which Mr. Gould presumes run much on the ground. Ten spe- 

 cies are said to be known of this group. Semeiophorus (Macrodipte- 

 ryx) vexillarius, G., a very remarkable form and placed here as a sub- 

 genus of Macrodipteryx on account of the different structure of the 

 wing, the sixth, seventh, and eighth quills gradually lengthening, 

 while the ninth stretches to an enormous length. Lyncornis cervini- 



