Miller and Hollister — New Mammals Collected in Celebes. 95 



Remarks. — ^The genus Eropeplus apparently represents a hypsodont 

 stock which occupies much the same position toward Lenomys as the 

 Philippine genus Bullimiis toward Raitus. 



Eropeplus canus, sp. nov. 

 Type from Goenoeng Lehio (southwest from Lake Lindoe), Middle 

 Celebes; above 6,000 feet altitude. No. 218,707 U. S. National Museum; 

 skin and skull of female (teeth slightly worn); collected January 12, 1917, 

 by H. C. Raven; original number 3079. 



External characters. — A large gray rat with terminal third or half of tail 

 white; general appearance as in Lenomys longicaudus but fur more silky 

 and less wooly in texture; hairs of underfur on back 25-28 mm., the longer 

 piles, abundant on posterior half of back and on flanks, 35-45 mm. General 

 coloration above brownish gray, the hairs uniformly pale slate except at tip 

 (3-5 mm.), where they become pale buff; long hairs black usually with 

 buffy tips; the slaty under color appears everywhere at surface but more 

 noticeably on sides than on back ; underparts light gray in evident contrast 

 with sides, but without sharp line of demarcation, a combination of the 

 slaty under color and the pale buffy hair tips ; feet thinly clothed with short 

 blackish hairs; whiskers black. 



Skull and teeth. — In all essential characters the skull resembles that of 

 Lenomys longicaudus, but the size is noticeably less, the upper zygomatic 

 root is narrower, the interparietal is relatively wider, and the auditory 

 bullae are less smoothly inflated. Teeth similar to those of Lenomys in their 

 large size relatively to the narrow palate, but differing as already described 

 in their conspicuously greater height and in the simplified enamel pattern. 



Measurements. — Type: head and body, 195; tail, 265; hind foot (dry) 

 46 (43); greatest length of skull, 46.7; condylobasal length, 44.0; zygomatic 

 breadth, 22.0; interorbital breadth, 5.6; nasal, 17.2; diastema, 11.6; 

 mandible, 27.6; maxillary toothrow (alveoli), 10.0; mandibular toothrow 

 (alveoli), 10.0. 



Specimens examined.— Two, one from Goenoeng Lehio and one from 

 Rano Rano (altitude about 1,800 m). 



Remarks. — The two specimens differ slightly from each other and may 

 represent distinct local forms. In the skin from Rano Rano (a male, 

 slightly older than the type) the pale area on the underparts is narrower 

 and strongly buffy, and the white portion of the tail is much longer (175 mm. 

 instead of 100 mm.). Comparison of the skulls and teeth shows various 

 small differences which further material might prove to be important. 



Lenomys longicaudus, sp. nov. 



Type from Gimpoe, Middle Celebes; No. 219,712, U. S. National 

 Museum; skin and skull of adult $ (teeth moderately worn); collected 

 September 1, 1917, by H. C. Raven; original number 3203. 



Diagnosis. — Like Lenomys meyeri (Jentink) of Menado, North Celebes, 

 but more grayish, less tawny in coloration; middle underparts yellowish 

 buff; tail longer than head and body; teeth smaller; inner tubercles of first 

 and second laminae so drawn backward that each is more nearly in line with 



