Further Notes on Aitstralian Hydroids. 107 



very distinct circle of highly refractive granules just below the 

 aperture. 



Port Phillip Bay (Mr. J. B. Wilson). 



(The gonothecse have not previously been described.) 



Halicornaria superba, Bale. 

 Dongarra Beach, Westei-n Australia (Mr. A. J. Campbell). 



Kirchenpaueria, Jickeli, (n-oditied). 



DiplocheihiS, Allraan. 



Azygoplon, Bale, not Allman. 



Hydrocaulus pinnate ; hydrocladia furnished with median 

 sarcothecae, but none at the sides of the hydrothecse ; median 

 sarcostyles present which are not provided with sarcothecse, but 

 communicate with the interior of the hydrocladia by simple 

 apertures in the perisarc. 



Gonangia without phylactocarps of any kind, sometimes adnate 

 by one side to a foreign substance. 



The genus Kircheripaueria was founded by Jickeli for some 

 specimens collected at Trieste, which, though fragmentary, were 

 sufficiently well preserved to exhibit clearly the peculiarity which 

 induced him to establish a new genus for them, namely, the 

 presence of naked sarcostyles above the hydrothecfe. Another 

 feature which seems to me of equal importance was the absence 

 of the lateral sarcotheca^ usually found in connection with the 

 hydrothecse ; I have accordingly included this characteristic in 

 the generic definition. 



Among the material forwarded to me by Mr. J. B. Wilson 

 were several specimens of the Diplocheilics mirabilis of Professor 

 Allman's Challenger Report, in -yvhich the soft parts were fairly 

 well preserved, and examination of these readily showed them to 

 belong to Jickeli's genus. The hydrothecte of D. mirabilis bore 

 a striking resemblance to those of the small species which I 

 formerly described as Phinmlaria produda^ and afterwards as 

 Azygoplon prodiidum. I therefore carefully re-examined the 

 latter species, and although none of the specimens retained the 



