﻿COPEPODS FROM LAKE ERH HAI, CHINA — ^HSIAO 167 



Kiefer gave two different descriptions of the structure of the fifth 

 pair of legs in T. hebereri. In 1929 he gave these features: (1) Third 

 exopodite segment with one short spine and one seta, (2) endopodite 

 unscgniented, three-fourths as long as first exopodite segment, and (3) 

 endopodite wtih one long spine and a few setae at the distal end. 

 In 1934, however, these characters w^ere given as (1) third exopodite 

 segment with very sliort spine or unobservable, (2) endopodite two- 

 thirds as long as first exopodite segment, and (3) endopodite with 

 two strong spines ; but his descriptions of the first and second exopodite 

 segment and their appendages were the same. The fifth pair of 

 legs in female T. liebereroides are quite different from those of the 

 species described by Kiefer. The rectangular first exopodite segment 

 is 2.5 times as long as wide instead of only twice as long. Like his 

 first description of 1929, the third exopodite segment is armed with 

 one short spine and one long seta, but the end is like his description 

 of 1934, being two-thirds instead of three-fourths as long as the first 

 exopodite segment, and with two spines as in his second description, 

 but not one spine and a few setae at the distal end — 1929 description — 

 with these spines subequal or one spine half as long as the other. The 

 strong spine on the distal outer edge of the first basal segment, the 

 fine sensory hair on the second basal segment, and the claw on the 

 second exopodite segment are the same as in T. JiebereH. For his 

 Java and Sumatra females Kiefer (1934) gave an account of one 

 seta each on the antenna of joints 11 and 13-19. In T. liebereroides 

 the distribution of setae is: One each on joints 1, 3-8, 10-21; two on 

 joints 22-23; three on joints 2, 9, 24; and six on joint 25. 



Kiefer's two descriptions of the structure of the male thoracic seg- 

 ments are quite different from each other. According to his first 

 account, the last segment had great winglike expansion and the same 

 middorsal swelling as in the female. But he pointed out later that 

 there was no winglike elongation and that the fourth and fifth seg- 

 ments were not fused, but he made no mention of the middorsal 

 swelling. Our specimens from Lake Erh Hai show no elongation of 

 the last thoracic segment, the fourth and fifth segments are not fused, 

 and there is no middorsal swelling in any of the males. Kiefer's 

 description of the other characters of the male abdomen agrees com- 

 pletely with ours. 



Of the male fifth pair of legs no description was given by Kiefer 

 in 1929, only figures, but in 1934 they were described in detail. Com- 

 pared with the later account, T. hehereroides shows the following 

 points of difference: (1) Right first basal segment not so long as 

 the second; (2) second basal segment with only one hyaline, mesially 

 placed, protuberance, not two; (3) anterior surface of basal segment 

 with strong spine; (4) endopodite about as long as first exopodite 



