378 On Five new Mammals from Java. 



than in R. c. cremoriventer, with the parietal vklges less 

 sharply deflected. Orbital constriction more inaiked and the 

 infraorbital plate narrower ; zygomatic arches decidedly more 

 slender ; nasals as in R. c. cremoriventer, terminating in a 

 point posteriorly. Beneath, with the palatal foramina nar- 

 rower, the interpterygoid space almost parallel-sided, not 

 pear-shaped anteriorly; bulla? decidedly larger and more 

 globose in an untero-posterior direction. Teeth decidedly 

 larger, the posterior molar much larger. 



Measurements. — Head and body(takenin the flesh) 137mm.; 

 tail 196; hind foot 29; ear 19. 



Skull : greatest length 36'2 ; condylo-basilar length 30'8 ; 

 diastema 9*1; zygomatic breadth 16*2 ; length of nasals 12'9 ; 

 upper molar row 6*3. 



Mycteromys crociduroides vulcani, subsp. n. 



Type. — Adult female (skin and skull) collected at Kandang 

 Badak, Mt. Gedeh, Western Java, 7900 ft., on 5th March, 

 1916, by H. C. Robinson, Federated Malay States Museums, 

 no. 897/16. Original no. 7381. 



Diaanosis. — Warmer in colour above than the type-species 

 of the genus, Mycteromys crociduroides (Robinson & Kloss*), 

 tail equal to the head and body in length. Ears large, 

 rounded, almost naked. Pelage dense, close, and very soft. 



Colour. — Above a very fine grizzle of hazel and black, the 

 base of the fur slaty grey ; hands and feet seal-brown ; tail 

 uniform black. Beneath greyish, strongly washed with 

 ochraceous buff, more markedly so in the median line, | 



Skull. — As in the typical species, but the rostrum decidedly 

 heavier and relatively shorter ; teeth smaller. 



Dimensions.— Head and body 95 mm. ; tail 95 ; hind 

 foot 21 ; ear 18. 



Cranial measurements: greatest length 25 - 3 ; condylo- 

 basilar length 23*0 ; diastema 7*8 ; upper molar row 3*7 ; 

 length of palatal foramina 5'0 ; median nasal length 9*5 ; 

 breadth of combined nasals 2*5; zygomatic breadth 12'6. 



Specimens examined. — Two, the typeand a two-thirds-grown 

 female from the same locality. 



This species differs at a glance from the large series of the 

 genotype obtained at Korinchi, Sumatra, in its much warmer 

 colour, shorter tail, dark hands and feet, and heavier rostrum. 

 (Jut of several hundred rats trapped in the locality these 

 were the only specimens obtained, so that it is in all proba- 

 bility a rare form. 



* Journ. Straits Branch Roy. Asiat. Soc. no. 73, p. 271 (1916) ; Journ. 

 F.M.S. Mus. viii. pt. 2, p. 57 (1918). 



