166 SUMMARY OF CURRENT RESEARCHES RELATING TO 



l^ 



Coelentera. ^ 





Fresh-water Medusa from Bombay Presidency.* — Nelson Annan- 

 dale gives a preliminary description of Limnocnida indica sp. n., from 

 the Yenna and Koyna valleys of the Bombay presidency. It is clearly 

 allied to L. tanganicse (Bohm) and L. rhodesiae Boulenger, but e&ffers 

 from both in the arrangement of its tentacles and sense-organs. "^ 



Fresh-water Medusoid from Western India, j — F. H. Gravely and 

 S. P. Agharkar give some account of Limnocnida indica Annandale, from 

 the Yenna and the Koyna. Specimens of both sexes were found in 

 abundance. In both the gonad-ring is white, but in the female it \$ 

 marked by numerous equidistant vertical grooves, whereas in the male 

 it is quite smooth. Evidence of Entomostraca was found in the stomach. 

 There is probably an asexual hydroid stage which lives attached to rocks 

 (there were no water-weeds) at the bottom of deep pools. This hydroid 

 probably produces medusse by budding from February till April or May. 

 After that it stops, whether the pool in which it lives is flooded or not, 

 and very possibly dies. 



Genus Errina.J — S. J. Hickson revises the Stylasterine genus Errina, 

 and discusses the minute structure. He deals with the gasteropores, 

 the gonophores, and the coenenchymal canals. From the revision it 

 results that the genera Labiojwra and Spinipora must fall into the genus 

 Errina. In the Errifia group of species the coenosteum is hard and 

 compact, perforated by well-defined coenosteal pores, and with grooved 

 spines turned towards the apex of the branch. In the Lahiopora group 

 the coenosteum is granular and reticulate, without well-defined coenosteal 

 pores ; there are grooved spines turned away from the apex of the 

 branches, or clustered and irregularly placed. 



Protozoa. 



North American Fresh-water Rhizopods and Heliozoa.§ — G. H. 



Wailes reports collections from the States of New York, New Jersey, 

 and Georgia. Of Rhizopoda, 161 species and varieties are recorded, in- 

 cluding five new species and ten new varieties. About forty are recorded 

 for the first time from the United States. Four species of Heliozoa are 

 also recorded. The majority of the North American species, say 80 p.c, 

 were similar to those found in Europe. 



Studies on Paramoebae.lj — V.^^moki ^edXs With Para^nw'ba pigmen- 

 tifera Grassi and P. chsetognatlii Grassi, which occur as parasites in the 

 caudal coelom of Chastognatha. He describes the cytoplasm, with its 

 extraordinarily strong granulation, its large vacuoles, its fatty and other 



* Records Indian Museum, vii. (1912) pp. 253-6 (1 fig.). 



t Records Indian Museum, vii. (1912) pp. 399-403 (1 pL). 



X Proc. Zool. Soc, 1912, pp. 87G-96(3 pis.;. 



§ Journ. Linn. Soc. (Zool.) xxxii. (1912) pp. 121-61 (1 pi.). 



11 Zeitschr. wiss. Zool., ciii. (1912) pp. 449-518 (4 pis. and 4 figs.). 



