82 Records of the Indian Museum. [Vor. XII, 
and Labochirus. Only one species of Thelyphonus—T. schnehageni 
from Rangoon—-has been recorded from this country. Through- 
out Assam and the Eastern Himalayas the present group of genera 
is represented by Uroproctus assamensis; and throughout the 
Indian Peninsula and Ceylon by Thelyphonus sepiaris. In all of 
these three species the tarsi of the antenniform legs of the female 
are long and unmodified. 
It is clear, therefore, that species of this group are more numer- 
ous and as a rule more highly specialized in the Archipelago than 
in Continental Asia. 
SUMMARY OF CONCLUSIONS. 
I. The degree to which different species of Thelyphonidae 
have been affected hy the process of evolution can best be seen in 
the genital sternum of both sexes, the antenniform legs of the 
female, and the tibial apophyses of the male (p 79). 
2. The modifications seen in the genital sternum are not suffi- 
ciently definite or varied to be of much use for the purposes of this 
paper. Broadly speaking, however, they are correlated with the 
modifications seen in the other two structures mentioned (p. 79). 
3. One of these two structures is affected in some genera, 
and the other in the rest. Only in the genus Typopeltis are both 
affected together. The relationships of this genus are rendered 
obscure by the fact that it differs from other genera with modified 
male tibial apophyses in having keels between the median and 
lateral eyes, and that it differs from other genera with modified 
female antenniform legs in having a different (more nearly ter- 
minal) series of joints affected by the modification (pp. 62 and 80). 
4. The genera Uroproctus, Thelyphonus, Abalius and Tetra- 
balius are closely related. Except in so far as the structure of the 
genital sternum of Uvoproctus indicates the primitive character of 
this genus, they are separated by characters of doubtful phylo- 
genetic significance and they are best treated together as a unit 
group for the purposes of this paper. In all species the tibial 
apophysis of the male is simply conical, though often slenderer 
than that of the female ; in the more highly specialized species the 
antenniform legs of the female are modified (pp. 62 and 8r). 
5. Twenty-three of the twenty-eight species belonging to these 
four genera are found in and confined to the Malay Peninsula, the 
Malay Archipelago and the Polynesian Islands. Of these the females 
of only two have unmodified antenniform legs ; one of the remaining 
twenty-one has the tarsi of these legs unshortened although they 
are modified (p. 81). Of the two species which inhabit Siam and 
Indo-China one has these tarsi shortened and the other unshort- 
ened ; both have them modified (p. 81). One species has been re- 
corded from Burma, where the keelless genera with modified male 
tibial apophyses are dominant. Like the two species occurring 
(and dominant) in Assam and in the Indian Peninsula (with Ceylon) 
respectively it has the antenniform legs of the female unmodified 
