540 ON BEPTILES ETC. PROM WESTEEIf SOMALI-LAND. [June 18» 



4. Chiromantis petersii, Blgr. 



A fine female specimen, measuring 80 millim. from snout to 

 vent. Darar, 15.9.94. 



5. Cassina obscitba, Blgr. 



A single specimen from the Budda Plateau. 



The tarso-metatarsal articulation reaches the shoulder. Toes 

 one-third webbed. Skin nearly smooth above. Olive-green above, 

 with dark liver-brown spots. 



6. Cacosteentjm nanum, Blgr. 



A single specimen. Durro, 2.12.94. 



The occurrence so far north of this species, originally described 

 from Caffraria (Ann. & Mag. N. H. [5] xx. 1887, p. 61), is sur- 

 prising. Yet I have little doubt the determination is correct. 



7. Btjfo kegtilaeis, Reuss. 

 Nmnerous ; collected all along the route. 



8. BxTFO DODsoNi, sp. n. (Plate XXX. fig. 5.) 



Crown without bony ridges ; snout short, blunt ; interorbital 

 space as broad as the upper e3^elid ; tympanum very distinct, two 

 thirds the diameter of the eye. Pirst finger considerably longer 

 than second ; toes one-third webbed, with single subarticiJar 

 tubercles ; two moderate metatarsal tubercles ; a tarsal fold. The 

 tarso-metatarsal articulation reaches the anterior border of the eye. 

 Upper parts with numerous flat, distinctly porous warts ; parotoids 

 oval, flat, as long as their distance from the anterior border of the 

 orbit. Pale olive above, with small darker spots ; a dark canthal 

 streak and a dark vertical bar below the eye ; lower parts white. 

 ]\Iale with an internal subgular vocal sac. 



Prom snout to veut 53 millim. 



A single male specimen. Rassa Alia, 6.10.94. 



This species, which is allied to B. viridis, Laur., is named after 

 Mr. E. Dodson, who accompanied Dr. Donaldson Smith as taxi- 

 dermist. 



9. Xenopus muelleei, Ptrs. 

 Murgen (Salro), 12.11.94. 



EXPLANATION OP THE PLATES. 

 Plate XXIX. 

 Fig. 1. Heynidactylus isolepis, p. 531. 1 a. Chin-shields, X 3. 



2. Hemidactylus smithi, p. 532. 2 a. Chin-shields, x 3. 



3. Agama zonura, p. 533. 



4. Eremias smithi, p. 534. 



Plate XXX. 

 Fig. 1. Typhlops sonudieus, p. 536. Upper and side views of head, X 3 



2. Zamenis smithi, p. 536. 2 a. Side view of head. 



3. Psammophis pulcher, p. 537. 3 a. Side view of head. 



4. Arthroleptis minutus, p. 539. 



5. Bufo dodsonii, p. 540. 



