116 BULLETIN 151, UNITED STATES NATIONAL MUSEUM 



Skin smooth above and below except at the angles of the jaw, 

 the posterior part of the belly, and the lower and hinder aspects 

 of the thighs where it is granular. 



Color in alcohol. — Above bufFy white, minutely dotted with brown 

 on all upper surfaces; a concentration of these dots form four longi- 

 tudinal hues ; two of these are dorsal and proceed from above the anus 

 to a point where they converge between the eyes; on either flank is 

 another line which, commencing on the snout, passes through the eye 

 and fades out two-thirds of the way along the flank. 



Color in life. — The satiny greenish-yellow and silvery white coloring 

 of this species, with its variations, has been published recently." 



Measurements. — Snout to vent, 26 mm.; length of head, 8.5 mm.; 

 length of snout, 4 mm.; breadth of head, 8.5 mm.; diameter of orbit, 

 2.5 mm.; length of tibia, 10 mm.; length of foot, 15 mm.; and length 

 of fourth toe, 7 mm. 



This is the. largest female known; the average of 35 was 20 mm.; 

 males attain a length of 22 mm. Note the shortness of the tibia, 

 which in a Megalixalus fulvovittatus of 27 mm. is 13 mm.; the fourth 

 toe in the same frog measures 10 mm. 



Genus HYPEROLIUS Rapp 



Until a thorough revision of this genus has been carried out by 

 some one to whom all the material is available, errors in taxonomy 

 are almost certain to be perpetuated and perpetrated. The identifica- 

 tions given below must therefore be considered more or less tentative; 

 in the case of //. marmoratus in particular it is difficult to believe 

 that all the strikingly different color forms at present grouped under 

 that name represent a single species. There seem, however, to be no 

 definite structural characters whereby they may be separated. 



HYPEROLIUS MARMORATUS Rapp 



Hyperolius marmoratus Rapp, 1842, Arch. Naturg., vol. 8, pt. 1, p. 289, pi. 6, 



figs. 1 and 2. (Natal.) 

 Rappia marmorata Boulenger, 1882, Cat. Batr. Sal. Brit. Mus., p. 121. (part). 



1 (U.S.N.M. 22097) Jomb6ni Range, K. C. (Chanler) 1892. 



5 (U.S.N.M. 40888-92) Juja Farm, K. C. (Sm. Afr. E.xped.) 1909. 



110 (U.S.N.M. 40913, 41704, 41807-905, 41964-8, 41986-99) Lake 



Naivasha, K. C. (Sm. Afr. Exped.) 1909. 

 1 (U.S.N.M. 41153) Mt. Kenya to Fort Hall, K. C. (Sm. Afr. Exped.) 



1909. 



1 (U.S.N.M. 41687) Southern Guaso Nyiro, K. C. (Sm. Afr. Exped.) 



1909. 



2 (U.S.N.M. 41980, 42488) Nairobi, K. C. (Sm. Afr. Exped.) 1909. 



1 (U.S.N.M. 49403) No locahty, Kenya Colony. (Sm. Afr. Exped.) 



1909. 

 1 (U.S.N.M. 49320) Mt. Sagalla, K. C. (Heller) 1911. 



« See Barbour and Loveridge, 1928, p. 224. 



