NATURAL SCIENCES OF PHILADELPHIA. 141 



172. Trachyphonus purpuratus, Verreaux. 



Trachyphonus purpuratus, J. & E. Verreaux, Rev. et Mag. Zool. 1851, 

 p. 260. 

 Apparently not rare in Equatorial Africa. From the Camma and formerly 

 from the Moonda. 



173. Dendropicus gabonensis, (J. & E. Verreaux.) 



Dendrobates gabonensis, Verr. Rev. et Mag. Zool. 1851, p, 513. 

 Numerous specimens from the Camma, nearly all of which, however, appeal- 

 to be immature. 



174. Dendropicus nigriguttatus, (Verreaux.) 



Dendromus nigriguttatus, Verreaux. 

 From the Camma and Ogobai, and formerly from the Moonda. 



175. Dendromus Carolx, (Malherbe.) 



Chloropicus Caroli, Malh. Rev. et Mag. Zool. 1852, p. 550. 

 Appears to be the most abundaut woodpecker in Equatorial Western Africa. 

 From the Camma and formerly from the Moonda and Cape Lopez. 



176. Dendromus brachyrhynchus, Swainson. 



Dendromus brachyrhynchus, Swains. B. of W. Afr. ii. p. 160. 

 "Picus chloronotus, Cuvier," Pucheran, Rev. et Mag. Zool. 1852, p. 479. 

 Several specimens which appear to be this species, from the Camma. 



177. Dendromus nivosus, Swainson. 



Dendromus nivosus, Swains. B. of W. Afr. ii. p. 162. 

 Specimens from the Camma and Ogobai. 



178. Dendromus africanus, (Gray) ? 



Picus africanus, Gray, Zool. Misc., p. 18, (1831) ? 



Both sexes of a species much resembling that described as above, but, 

 unfortunately, not in mature plumage. This bird belongs to the same group 

 as Picus namaquus, Lichtenstein, Le Vaill. Ois. d'Afr. vi., pi. 251, 252, 

 (which is the same as P. mystaceus, Vieill. and P. biarmicus, Cuvier,) and 

 Dendrobates schoensis, Riippell, Syst. Ueber, pi. 33. 



It is very probably the species described by Gray, as above, but I prefer 

 inserting it doubtfully, hoping to receive mature specimens. From the 

 Camma, and formerly from Cape Lopez. 



179. Dendromus. 



In addition to the preceding species of "Woodpeckers, there are several 

 others in Mr. Duchaillu's collections, and especially in the present, from the 

 Camma, which are at least not easily referable to known species. In fact, 

 though with a large majority of known African species before me, in the 

 Acad. Coll., the investigation of the Woodpeckers alone in this collection 

 has required so much time, that I am under the necessity of abandoning it, 

 without satisfactory conclusions, so far as relates to several species.* 



*The following species of Picidce, from Western Africa, are in the Academy 

 collection : 



1. Dendropicus minutus, (Temminck). 



2. Dendropicus obsoletus, (Wagler). 



3. Dendropicus gabonensis, (Verreaux). 



4. Dendropicus goertan, (Gmelin). 



5. Dendropicus poliocephalus, (Swainson). 



6. Dendropicus immaculatus, (Swainson). 



7. Dendropicus pyrrhogaster, (.Malherbe). 



8. Dendromus punctiligerus, (Wagler). 



9. Dendromus chrysurus, Swainson. 



10. Dendromus brachyrhynchus, Swainson. 



1859.] 



/ 



