On two new Species of Walckeiiaera, Blachw. 89 



filaments, each of which may be traced into independent con- 

 nexion with small foreign bodies," Had Mr. Busk been 

 writing" of Ascodictijon instead of species of Kinetoskias^ he 

 could not have given more faithful descriptions of some of the 

 specimens found in the Palaeozoic rocks. The suggestive 

 inference to be drawn from these remarks, and others that 

 might have been given, is that the dark brown masses (pulp 

 &c.) in the various species of Ascodictyon are probably the 

 remains of endosarc in these once living filaments and semi- 

 tubular and bulbous tubes. 



'J'here is just one other point in Mr. Busk's paper to which 

 I will direct attention in conclusion, because it will help us 

 to understand and appreciate at its proper value Ascodictyon 

 and the abortive or " blind cells " of Rhopalonaria : — " That 

 the radical and connecting tubes, like the avicularia and vibra- 

 cula, represent modified zooids, is, I believe, generally admit- 

 ted ; nor can it be denied in this case [Bugula &c,) that each 

 successive joint or internode is a distinct zooid." And in a 

 note the author says, " In Bicellaria and in Notamia it may 

 almost be said that the inhabited part of the zooecia is simply a 

 dilatation at one part of the internode of a radical tube, which 

 is continued to the ultimate extremity of the branch." 



X. — Descriptions of two new /S^ec2*e5 0/ Walckenaera, Blachw. 

 By the Rev. O. P. Cambeidge, M.A., C.M.Z.S., &c. 



[Plate IV.] 



Among a large number of Spiders sent to me for identification, 

 dming the last three or four years, by Major-General A. W. 

 M. van Hasselt, from Holland, are two of the curious genus 

 Walckenaera, Bl., which I believe to be undescribed. Their 

 discoverer having kindly permitted me to do so, I now sub- 

 join descriptions and figures of these novelties. 



Family TlieridiidaB. 



Genus Walckenaera, Bl. 



Walckenaera Hasseltii, sp. n. 



Adult male, length ^V of an inch, or f of a line. 

 Gephalothorax rich black-brown. 



Legs yellow, tinged with orange-brown. Perhaps i 1 some 

 examples they would be bright orange-yellow. 



