iiew ^/ (OH Dials from Frenc/i Lid)- China and Slam. 97 



Skull with intcrptcrygoid space and basioccipital a little 

 narrower ; bullae a little more dilated ; foramen maj^num 

 nearly eircular in outline, not flattened and oval. 



'lype. — Adult male (skin and skull) eolleeted on Langbian 

 Peaks, South Aimam, oilOO-GoOO ft., on 28th April, 1918, 

 by C. Hoden Kloss. No. 3556/0 P,K. 



Specimens examined. — Two from the type-locality and three 

 from Dalat, Langbian Mountains, 4500 ft. 



17. Rattus molliculus, sp. n. 



Superficially resembling immature examples of the Annaiu 

 country rat, Rattus rati na sladeni (Anderson), but the upper 

 parts totally devoid of spines, the feet paler, aiul the under 

 parts varying from pure white to buffy white with visible 

 grey bases to the hairs. Mammae 2 — 3 = 10 instead of 

 3 — 3 = 12 as in sladeni. 



Skull remarkably like that of R. r. sladeni, but much less 

 robust, especially more slender throughout. Infraorbital 

 foramina larger, most noticeable when viewed from above ; 

 bullae larger and more dilated and more nearly paralleled. 



Above ''sayal'^ brown to buffy brown (Ridr/way), 

 streaked with blackish, paler and greyer on sides of head 

 and body and on the limbs. Hind feet white, fore feet only 

 a little paler than the forearms. 



Under parts varying from fur with grey bases and creamy 

 tii)s in the older animals to pure white in the younger. 



Tail dark throughout, but generally clad beneath proxi- 

 nially with short silvery hairs : about 13 rings to the 

 centimetre at mid-length. 



Type. — Female vix ad. (skin and skull), collected at Daban, 

 Phanrang Province, South Annam, G50 Et., on 23rd March, 

 1918, by C. Boden Kloss. No. 3267/CBK. 



Specimens examined. — Seven from the type-locality, one 

 from Ban Na Kham, 1150 ft.. North Siam (27 miles east of 

 Outeradit), and one from Ban Tuoi, Laos, just below Pon 

 Pissai on the Mekong. 



Remarks. — Though superficially so like immature R. rattus, 

 this animal has nothing to do with that species and, knowing 

 no other to which to refer it, we must regard it as quite 

 distinct. 



For measurements see table on p. 98. 



Ann. ct- Mag. N. Hist. Ser. 9. Vol. ix. 



