. Bulletin of the British Museum (Natural History). CHILEAN SPECIES OF THE GENUS EUPSOPHUS 135 and second fingers consist of clusters of fine brown spinules, are restricted to the dorsal surface and extend to the bases of the distal phalanges. The inner palmar tubercle also bears asperities which like those on the fingers are granular. Unlike E. taeniatus, in which all the adult males have vocal sac openings on the floor of the mouth, the external sex characters of roseus appear to regress between the mating seasons and specimens taken at these periods can be sexed only by an examination of th
. Bulletin of the British Museum (Natural History). CHILEAN SPECIES OF THE GENUS EUPSOPHUS 135 and second fingers consist of clusters of fine brown spinules, are restricted to the dorsal surface and extend to the bases of the distal phalanges. The inner palmar tubercle also bears asperities which like those on the fingers are granular. Unlike E. taeniatus, in which all the adult males have vocal sac openings on the floor of the mouth, the external sex characters of roseus appear to regress between the mating seasons and specimens taken at these periods can be sexed only by an examination of the gonads. Seemingly there is no predetermined order of development of the different sex characters for in some cases the sac openings dm. cue Fig. 15. E. roseus, No. 4a. Lateral view of head showing tympanic annulus, extra columella and neighbouring muscles. For abbreviations see Fig. 3. develop prior to the nuptial pads while in other examples the reverse order is the case but the openings are always present by the time the pads acquire spinules and a deposition of pigment. Exceedingly few of the examples studied bear any collecting dates and conse- quently little information on breeding dates is available but females bearing ripe ova were taken at Bariloche during November, at Nahuelbuta on the ist December and at Lechagua on i8th November as well as on ist January and 6th March. Colour. The colour in life of some of the roseus collected near Ancud was noted by the collector as being mottled yellow-red, red, grey and brown. A few of the specimens that are preserved in the collections of the Vienna Museum still retain their original coloration. The ground colour of these individuals is magenta with a brown band on the canthus, across the tympanum and along the lateral fold. Numerous other brown marks are apparent on the haunches and on the inter-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for rea
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