Journal & Proceedings of the Asiatic Society of Bengal 1922 (New Series)

In those Cyprinoid genera that live in rapirunning waters and consequently lead a ground-habit of life the bladder undergoes considerable degeneration ; this consists firstly in the gradual reduction of the two chambers and the ultimate disappearance of the posterior and secondly in the thickening of the walls. [...] I take up the various functions attributed to this struture one by one and discuss them separately in the light of my observations and also in the light of the evidence afforded by the morphological and histological study of the structure of the float which is given towards the end of this short note. [...] Though I have not made any observations on the feeding habits of those tadpoles in the absence of a strong musculture in the funnel it seems improbable that the teeth on the inner side of the structure are capable of either scraping the leaves of water-plants or rasping algal slime In the case of the hill-stream fishes which have largely to depend on algal slim. [...] C. T. Binghean's volume on t'-ie wasps awl i bees in the Fauna (Jf British India " series appeared in 1897 about a thousand species wore described ; but the stimulus the Welk gave to the study of the group has caused the number of species now known from the Indii.n region to be almost doubled (as the writer of the review of the book in Nature predicted) and numerous other additions to our knowle [...] G. R. Dutt of Pusa appears to have confined himself mainly to the biological aspect of the subject but has also published a few purely systematic papers on the Pm:sores./ His paper in the Entomological series of Memoirs of the Deparment of Agriculture for 1912 is one of the most thorough investigations into the life-history and habits of the group that has yet been published in the East.