1886.] MR. O. THOMAS ON LAGORCHESTBS FASCIAIUS. 547 



Finally, so far as regards colour, the transverse banding of the 

 lower back presents a style of coloration quite unique in this family, 

 and, beyond the Macropodidce, only found among Marsupials in Thy- 

 lacinus and Mijrmecob'nis, in wliich, however, it is far more prom- 

 inent than in the Banded Wallaby. 



The last point for consideratiou is (he systematic position of 

 Logostrophus among the other genera of the family, and I have 

 therefore compared its characters with those of the sections and 

 groups into which Prof. Garrod, in his classical paper on Dorcopsis \ 

 has divided the subfamily Macropodince. This comparison shows 

 that the differential characters of Logostrophus are of distinctly 

 greater systematic importance than are those separating Prof. Garrod's 

 Section I. from Section IT., as these appear to be by no means so 

 persistent or invariable as that author supposed. I cannot therefore 

 consider Lagostrophus, as a group, less than equal in value to all the 

 other genera of the subfamily combined, so that the following is the 

 arrangement that I would propose to substitute for Prof. Garrod's : — 



Family MACROPODID^. 



Subfamily Macropodin.e. 



Section I. 



A. Genera Macropus, Petrogale, Onyckogale^ Lagorchestes. 



B. Genera Dendrolayus and Dorcopsis. 

 Section II. Genus Lagostrophus. 



Subfamily Hypsiprymnin.«. 



Section I. Genera Hypsiprymnus, Bettongia, Aepyprymnus. 



Subfamily Hypsiprymnodontin^. 



Section I. Genus Hypsiprymnodon. 



EXPLANATION OF PLATE LIX. 



Fig. 1. Lagostrophus fasciatus, upper view of skull. 



2. , palatal view of upper incisor teeth. 



3, , palatal view of upper incisor teeth, with the lower jaw in 



position. 



4. , outline of tran.sverse section of the two lower incisors. 



5. , right condyle of lower jaw. 



6. , side view of upper and lower incisors. 



7. , palatal view of upper and lower incisors. 



8. Lagorchestes leporoides, as in hg. 2. 



9. , as in fig. 3. 



10. , as in fig. 4. 



11. , as in fig. 5. 



12. • , as in fig. 6. 



Fig. 1 is of the natural size ; all the others are mngnified three times. 



1 P. Z. S. 1875, p. 58. 



36* 



