48 ON GAERULAX LEUCOGASTER. [1867. 



The follo\^-ing table represents the geographical limits of each species of the group as far 

 as is at present known : — 



1. Lanhis crisfafus, Linn, Plains of India, Ceylon, Nipaul, Assam, Bootan, Arakan, 



Tenasserim. 



2. L. lucioneusis, Linn. Luzon, Formosa, China, Antlamans, Nicobars. 



3. L. phcmicurus. Pall. ap. Schrenck. Amur, North China, North-east Siberia, Japan. 



4. L. stiperciliosus. Lath. Malay Peninsula, Sumatra. 



5. L. magnirostris. Less. Malay Peninsula, Sumatra. 



6. L. scJmaneri, Bp. Borneo. 



7. L. arenarius, Blyth. Punjab, Upper Scinde, South-west Afghanistan. 



8. L. anderssoni (Strickl.). Damaraland. 



p.* 381.' Letter on Garrulax leucogaster, WaIden,from Viscount Walden, F.L.S., F.Z.S., &c., 



to the Editor of ' The Ibis.' 



Chislchurst, Kent, 



May 12, 1867. 



Sir, — In my " Notes on Birds collected in Tenasserim and the Andaman Islands " (P. Z. S. 

 1866, pp. 537-556)*, I pointed out certain characters in a specimen of a Garrulax, from Siam, 

 which appeared sufficiently important to wan-ant me in regarding it as belonging to an unde- 

 scribed species. Since then I have had the advantage of perusing M. Pucheran's admirable 

 essay on the dcntirostral types contained in the Paris Museum. When reading the detailed 

 description (Arch, du Mus. vii. p. 376. no. 37) given by that eminent zoologist of Tardus diardi, 

 Lesson (Traite, p. 408), from Cochin China, I at once recognized the characters which led me to 

 separate G. leucogaster, nob., from G. leucolophus (Hardw.) and G. belangeri. Less. M. Pucheran 

 writes, " la tete est blanche, ainsi que le thorax et Vabdonun dans sa partie mediane " et " ses 

 cotes de I'abdomen et les plumes couvrant le haut des tarses sont brun roux." In my description 

 of the Siamese specimen (/. c. p. 548. no. 20)f , the words used are, " the entire under surface is 

 „. ,„„> white, the thigh covers and flanks only being rufous." M. Pucheran ends his article thus — "Je 



Idis ISo/ ' D • 



p.'3S2. ' ne sache pas que cette espece ait ete de'crite depuis I'epoque a laquelle M. Lesson I'a denomince 

 pour la premiere fois ; mais il me semble quelle pent parfaitement s'isoler des especes connues 

 de Garrulax par le blanc de la partie mediane de son abdomen." 



Describing as new a previously described species is justly considered inexcusable. Yet, in 

 this instance, if I have done so, this much may, I think, be urged in palliation : Lesson, who 

 classed it as a Turdus, merely says " tete et cou blancs." In the next place, when, three years 

 later (Bel. Voy. Zool. 1834, p. 258), he founded his genus Garrulax, enumerated the species he 

 classed in it, and described the closely allied form, G. hclangeri, he omitted all mention of 

 T. diardi ; nor is this species to be found under Garrulax in Lesson's ' Complements de 

 Buffon,' published in 1840. 



• \_AnUa, pp. 15-32.— Ed.] t {AnUa, p. 26.— Ed.] 



