Tetrameric Regeneration of the Tarsus in Phasmide. 507 
any other species of the group, this butterfly differs from all 
in the much greater restriction of the ochreous colouring on 
the primaries of the male (which commences beyond the end 
of the cell), in the entirely different coloration of the under 
surface, the primaries being saffron-yellow on basal two fifths, 
very pale creamy yellow on the disk, and with the dark 
bands golden olive or yellow-brown, the two outer bands on 
the secondaries near together and arched rather than angu- 
lated (as in J’. vesta as compared with 7. mutans). From all 
the species excepting 7. Hanningtoni it differs in the minute 
discocellular spot on the primaries. Only the wet-season 
form is known at present either of 7. Hanningtoni or of this 
species. 
98. Teracolus protomedia. 
Pontia protomedia, Klug, Symb. Phys., Ins. pl. viii. figs. 13, 14 (1829). 
Ranges from the Albert Nyanza northward to Abyssinia 
and eastward through Somaliland to Arabia. 
It is closely related to the preceding species and especially 
to T. Hanningtont, but its superior size, bright uniform yellow 
colouring, black-veined primaries, less banded upper surface 
of secondaries, and lack of a subbasal band on the under 
surface of these wings, have saved its being regarded as a 
variety of JT. vesta. ‘These differences, though perhaps not 
greater than exist between 7’. amelia and T. mutans, are more 
readily grasped without effort. 
The seasonal differences are well defined, the wet-season 
phase having the chief markings below smoky brown, partly 
veined with saffron-yellow ; the intermediate form has these 
markings redder and with well-defined veining; the dry 
phase has them almost wholly bright reddish orange. At 
Aden all three types occur together as mere variations. 
LIX.—On the Tetrameric Regeneration of the Tarsus 
in Phasmide. By EpMonpD BorDace*. 
At the meeting held on January 25 last I had the honour to 
communicate to the Académie des Sciences a few of the 
principal results that I had obtained previously with refer- 
ence to the phenomena of autotomy in Phasmidey. In 
conclusion I spoke of the process of regeneration of the ampu- 
* From the ‘Comptes Rendus, t. cxxiv. no. 26 (June 28, 1897), 
pp. 1536-1538 : from a separate impression communicated by the Author. 
de supra vAVoy Ade: 
+ Vide supra, pp ; ve 
