444 On a new Bandicoot. 



Skull : condylo-basal lengtli 83 ; zygomatic breadtli 30-5; 

 length of nasals 36"5 ; intertemporal breadth 148 ; height 

 from condyle to occipital protuberances 23 ; {)alatal length 

 51'5 ; combined length of three anterior moluriform teeth 12'8. 



Range. New Guinea and D'Entrecastf^aux Islands. Type 

 from Mimika River, S.W. Dutch New Gruinea. 



Type. Young adult male. B M. no. 11. 11. 11. 97. 

 Original number 3045. Collected 30th August, 1910, by 

 G. C. Shortridge. Presented by the B.O.U. Expedition to 

 New Guinea. 



After renewed consideration I have come to the conclusion 

 that it is impossible to consider the very large Echymipera, of 

 which skull-measurements have been occasionally published *, 

 as the same species as E. doreyana. I have b fore me three 

 of the large form and twelve of the smaller, and among these 

 latter there are individuals of both sexes and all ages ; ai»d 

 the only ex[)lanation seems to be that there are really two 

 species occurring in the same area, and as distinct from each 

 other by size as are the stoat and the weasel. 



The gap in size .of skull between the two is very marked, 

 both in actual length (73 mm. in the largest doreyana, 83 in 

 tiie smallest gargantud) and in general bulk. 



With regard to nomenclature, all the names seem to have 

 been applied to the smaller of the two forms. Dr. Jentink, 

 as I did formerly, considered them all one ; but his measures 

 show the same gap as ours do. Wiiether any of the large 

 form were before Dr. Cohn when writing his somewhat 

 eccentrically prepared paper on the group t is not clear, as 

 he only gives proj)ortional (and not absolute) measures; but, 

 in any case, if they were, he took them for tlie typical 

 doreyana^ giving the duplicate names alliceps and hreviceps 

 to tlie smaller form, and keiensis to the Key Island one, 

 which already had a special name {rufescens). 



It may be noted that the type of doreyani was an old male 

 with much worn teeth, and that its skull-length is conspicu- 

 ously less than is that of the type of garganiua, which is a 

 youngish adult, its teeth almost unworn. The largest 

 gargantua attains a condylo-basal length of 88 mm. 



♦ E. g., Thos. Cat. Mars. B. M. p. 210, the male .specimen, and .lentinlr, 

 Is'ova Guinea, ix. p. J 79. Male no. 300 and male without uumbor. 

 t Zool. Auz. I'JIO, p. 718. 



