POLYCHAETOUS ANNELIDS FROM CHINA — TREADWELL 275 



present. In this somite also the dorsal cirrus has a heavy basal 

 joint to which the cirrus proper is attached. This becomes much 

 more marked in later somites. There is a short ventral cirrus. 



In the eighteenth parapodium (fig. 20, d) there is a notopodial 

 acicula and small bilobed posterior lip on the setal lobe. The dorsal 

 cirrus is attached to the basal lobe above mentioned and there is a 

 Hp just ventral to the setal lobe. The neuropodium is not noticeably 

 different from the first, but the ventral cirrus is slender. The 

 tliirtieth parapodium (fig. 20, e) has prominent bundles of setae on 

 both neuropodium and notopodium, extending fanwise so that they 

 overlap. Dorsal to tlie notopodial setal lobe the parapodium is 

 decidedly elevated, and the dorsal cirrus lies in a depression on its 

 upper margin. The conical lip seen in earlier somites is still present, 

 ventral to the setal lobe, which has rounded anterior and posterior 

 Hps of wliich the former is the longer. The neuropodial setal lobe 

 also has two rounded lips, and the ventral cirrus is much as it was 

 in the eighteenth parapodium. 



In the eighteenth parapodium are a few notopodial setae of the 

 general form of figure 20,/. In the neuropodium are two tufts, one 

 above and one below the acicula. The majority are as show^i in 

 figure 20, c. In each tuft are smaller numbers of a second form 

 (fig. 20, /). In these the basal joint is heterogomphous, the terminal 

 joint short, blunt-pointed, and without teeth. 



In the subgenus Leptonereis there are no paragnaths on the pharynx. 

 In A^. (Z.) distorta the jav/s are dark brown, gently curved, and each 

 with about 16 subequal teeth. 



Type.—V.S.'NM. no. 20118 (Chen no. 22). 



Family GLYCERIDAE 

 Genus GLYCERA Savigny 



GLYCERA ROUXn Audouin and Milne Edwards 



Glycera rouxii Audouin and Milne Edwards, 1834, p. 242-243, pi. 6, figs. 5-10. — 

 Fauvel, 1933, p. 43. 



Fauvel (1933, p. 43) decided that von Marenzeller's G. decipiens 

 (1879, pp. 140-142, pi. 6, fig. 3) is sjmonymous with G. rouxii, and 

 since he had an opportunity of comparing the Chinese with the 

 Mediterranean specimens his identification probably is correct. My 

 single specimen (Chen no. 24) agrees with Marenzeller's and Fauvel's 

 descriptions but differs in some respects from the diagnosis given by 

 Audouin and Milne Edwards. 



