PIC1 



185 



NITZSCH'S figure of Picus viridi*. This woodpecker is so 

 far much more like a parrot. 



In Jynx the interior part of the dorsal tract forms a 

 continuous Y, of which the fork is hardly wider than the 

 handle. This is completely discontinuous with the median 

 posterior portion of the tract. 



The tensores patagii 1 are very simple. The tendon is 

 single. There is a conspicuous cucullaris patagialis, but 

 no biceps slip. Each tendon, both longus and brevis, is 

 reinforced by a tendon from the pectoralis. In Centurus 

 striatus the slip to the longus is muscular in origin ; it 

 seems to be more usually tendinous. 



The deltoid is an extensive muscle. 



The latissimns dor si posterior appears to be totally absent, 

 as in Indicator. 



As to the leg muscles, the accessory femoro-caudal is 

 always absent. The femoro-caudal and the semitendinosus 

 are always present ; the accessory to the latter may or may 

 not be present, its occurrence in different genera being 

 shown in the following list : 



"\Vith an Accessory Semitendiuosus 



Without an Accessory Seinitemliuosus 



Pi cits major 

 Picus minor 

 Picoides tridactylus 

 Spliyrapicus variiis 



Gee in us viridis 

 Gecinus vittatus 

 Leuconerpes candidus 

 Melanerpes formicivorus 

 Chloronerpes yucatanensis 

 MnUeripicus fulvus 

 Hypoxanthiis Rivolii 

 Jynx torquilla 

 Dnjocopus martin* 

 Picolaptes affinis 

 Tiga Shorei 

 Tiga javensis 

 Centurus striatus 

 Melanerpes erythrocepha- 



lon 

 Colaptes mexicanoides 



1 NiTzscH-GrcBEL, ' Zur Anatomie der Spechte,' Zcitschr. /. d. gcs. Naturir. 

 xxvii. (1806), p. 477. 



