TRÄGÅRDH, TWO MYRIOPODOPHILOUS ANTENNOPHORINiE. 31 



the ventral shields as far as that they all, except the genital 

 shields, are fused together and very weak. The paragynial 

 shields are rather large and cover partly with their median 

 edges the epigyniaP shield (Fig. 15.). 



The second branch is Antennophorus. It has one feature in 

 common with Physalozercon viz. that the paragynial shields 

 which are small have the median edge free. In A. the epigy- 

 nial shield is small, sharply pointed and fused together with 

 the ventri-anal shield which is rather small. Metapodial shields 

 are present, although small. (Fig. 16.) 



The third branch is constituted by Antennomegishis , Paranie- 

 gistus, EcMnomegistus and Neomegistus, which all agree in the 

 respect that the wliole ventral surf ace is härd, through the great 

 developement of the sternal-genital, ventri-anal and metapo- 

 dial shields. The three genital shields are all well developed 

 and distinctly separated from one another. This characteristic 

 feature is most probably due to the necessity of allowing a cer- 

 tain degree of extention to the genital aperture, which by the 

 great developement and hardening of the ventral shields ac- 

 quired by these genera is attaind by the splitting up of the 

 genital shield in three, which are more or less moveable accord 

 ing as their basc are fused with the ventri-anal shield or not. 

 In EcMnomegistus (Textfig. 18.) only the epigynial shield 

 is quite demarcated from the ventri-anal shield, the paragynial 

 shields being partly fused with it. 



In Antennoniegistus and Paramegishis they are all distinctly 

 demarcated from the ventri-anal shield. 



In Neomegistus the same result, the ability of extending the 

 genital aperture is attained in another way viz. by prolonging 

 the splits between the epigynial and the paragynial shields. 



The following scheme will illustrate my view of the phylo- 

 geny of the group. 



Addenda to »Biology and Development». The statements p, 

 22 — 24 about the habits and the food af Neomegistus also 

 bear upon Paramegistus. This latter genus however seems. 

 to Ii ve upon smaller Julidae, which chiefly occur in the 

 coast busli, where they were found at the end of May a t 

 Kvambonambi. As I did not visit the coast bush during 

 winter time oonsequently I do not know anything about the 

 habits of these Julidae and Paramegistus during this time. 



