714 AFRICAN REPTILES AND BATRACHIANS STEJNEGER. 



lu addition to this our specimens agree exactly with tlie characters 

 given by Peters (Reise Mossamb., Zool. Amph., p. 8) as characteristic 

 of ^. niffriccoi.s in as niucli as the posterior margin of tlie carapace is not 

 serrated, the median marginals are not keeled and hardly visible when 

 the carapace is viewed from above. I may also mention that Peters 

 has identified another specimen from the Seychelles (Mahe Island) as 

 8. nigricans (Monatsber. Akad. Wiss. Berlin, 1877, p. 455). 



Finally, if Smith's plate representing S. sinuatus (111. Zool. S. Afr. 

 Kept., pi. i) is only approximately correct, our specimens can not well 

 belong to that siiecies. 



The largest specimen (No. 29347) has a shell 160 mm. long. 



SAURI. 



Hemidactylus mabouia (Moreai'). 



Of this widely distributed species our collectors have brought speci- 

 mens from nearly all the localities visited. 



Mr, Chanler has one from the Tana River (U. S. National Museum, 

 No. 20087). 



Dr. Abbott sends two large specimens labeled Kilima-Njaro (Nos. 

 1C748-16750). He has also two specimens from tlie Seychelles (Nos. 

 20454-20455) in pretty poor condition. I am not aware that this species 

 has been collected in these islands before.* It would be interesting to 

 know in which particular island they were obtained. 



Three more specimens from Gloriosa Island (Nos. 20459-20461), also 

 collected by Dr. Abbott, have apparently been taken from the stomach 

 of some bird, as they appear to be half digested. I have no doubt about 

 the correctness of the identification, tliough the tubercles on the back 

 are rather large. 



The same gentleman, finally, has three specimens from Aldabra 

 Island, one of them quite young (Nos. 20470-20472). I can discover ho 

 other diflterence from typical specimens than the separation of the 

 second chin shield from the second infralabial by two small scales, 

 identical in both the grown specimens, while in all the other specimens 

 of H. mabouia before me the second chin-shield is in contact with the 

 second infralabial. 



Diplodactylus inexpectatus, ep. nov. 



Diagnosis. — Back covered with uniform granular scales; digits with 

 regular transverse lamellae inferiorly; rostral and first labial entering 

 nostril; digital expansion considerably wider than digit, two-thirds the 



*Boettger (Abh. Senckenb. Ges., XII, 1881, p. 531) records Hemidaefyhis frenatas 

 as occurring in the Seychelles, but upou what authority I do not know. It may per- 

 haps not be unnecessary, in view of this record, to state emphatically that the speci- 

 mens collected by Dr. Abbott are true //. mahouia, with wcll-develoix-d inner digits 

 and tubercles on the postocular ])(»rtion of the upper surface of the head. 



