6 



ARKIV FÖR ZOOLOGI. BAND 0. NIO 0. 



pears to approach T. rufesceyis as this species to judge from 

 Gunther's figure quoted is broader in this respect than T. 

 teguixin. 



The size of tlie fingers is also different as the following 

 measurements prove 



T. dusen i T, teuguixin 



Length of first finger vvitlioiit claw 9 mm. 12 mm. 



» » second » „ » 12 » 18,5 » 



» » third » » » 16,5 » 22 » 



» fourth » » »16 » 21 » 



» » fifth y> » » 11,5 » 14 » 



The claws on the other hand are larger and more power- 

 ful in T. diLséni than in T. teguixin. The claw of the third 



Fig. 4. Left före foot of Twpinainbis duaéni Lönnb. and of T. (cf/uixiti (L.) 

 to tlie riglit to show difference in size, in otherwis-J euual speeimens. 



finger of the former measures, for instance, 8,5 mm. but t hat 

 of the latter only 5,5 mm. The latter is, however, more 

 sharply pointed. 



The measiiring of the toes gives a similar and still more 

 striking result. 



T. duséni T. teguixin 

 Length of first toe without claw 10 mm. 11,5 mm. 

 » » second » » > 12 > 19 '> 



» » third » » » 18,5 » 31 » 



» » fourth » » » 26,5 » 50 » 



» » fifth » » » 14,5 » 30 » 



The colom' of T. duséni differs from the same of T. teguixin 

 which as a rule is black with Avhitish yellow markings, while 



