On the AnatoiH)/ 0/ Ily phobia nosophora. 



401 



Two montlis later Mr. Hill sent a further consignment. 

 Gem mules were now found, and the sponge was at once 

 recognized as EphijdaUa kakahuensis, Traxler (Termes. 

 Fiizetek. 1896, xix. p. 102, pi. ii.). The sponge described 

 by Tiaxler came from the River Kakahu in the South Island. 



Eplujdatia Jcakahuensis, Traxler. 

 a-f, specimens 1^ natural size: a, b, c, conical, with one large oscule; 

 d, lamellar ; e, thinly encrusting ; f, irregular ; g, spined tornote 

 oxeas, X 280 ; h, exceptional shape, viz. amphityle, X '280. 



Accordingly, New Zealand continues to have only one 

 known species of freshwater sponge, this being found both in 

 the Nortii and Soutii Island. 



It is to be iioped that Mr. Hill, who intends to dredge in 

 Lake Taupo, will add to the number of species. 



XXXIX. — On (he Atiatomy and Affinities of 



Hypsobia nosophora. By G. C. ROBSON, B.A. 



(I'ubhslied by permission of the Trustees of the British Museum.) 



Introduction. 



In 1915 Leiper and Atkinson (6), in extending and con- 

 firming Miyairi's original conclusions with regard to the 

 transmission of Asiatic Schistosomi;isis ( = Bilharziasis), 

 Ann. & Mag. N. Hist. Ser. 9. Vol. viii. 2(3 



