156 THE ZOOLOGIST. 



Dr. St. George Mivart read a paper on some distinctive structural 

 characters in the hyoid bone in certain Parrots. He represented two lateral 

 processes of the basihyal (for which he proposed the name " parahyal 

 processes") as probably distinctive of the whole of the Psittaci. He found 

 that in the genera Lorius, Eos, and Trichoglossus these processes were 

 developed into a remarkably delicate parahyal arch. He also described the 

 hyoid of Stringops, showing that it was completely Psittacine, but with 

 some special characters probably peculiar to it. 



Mr. A. D. Michael read a paper on a new freshwater Mite found in 

 Cornwall, and belonging to the genus Thyas, of which only two species 

 were previously known. It is a very handsome species, flattened in form, 

 scarlet and orange in colour, and with remarkable whorls of large lanceolate 

 spines tipped with scarlet on the legs. It was found near the Land's End 

 in a small stream close to where the rapid water falls into the sea. He 

 proposed to name it Thyas petrophilus. 



Mr. G. A. Boulenger read a paper " On the Nursing-habits of two 

 South-American Frogs," and exhibited a specimen of Hyla goeldii with the 

 eggs on the back. He also made remarks on a male specimen of Phyllobates 

 trinitatis from Venezuela, carrying its tadpoles on its back, in the same way 

 as had previously been observed in frogs of the genus Dendrobates from 

 Surinam and Brazil. 



March 19th.— Sir W. H. Flower, K.C.B., LL.D., F.R.S., President, 

 in the chair. 



Lieut.-Col. Godwin-Austen and Mr. W. E. Collinge communicated a 

 paper on some new species of Mollusca from Borneo. Three new species 

 were described, and details were given of their structure and affinities. 



Mr. F. E. Beddard read a preliminary account of some new Earthworms 

 in the Hamburg Museum, collected in South America. 



Prof. Alphonse Milne-Edwards communicated the description of a new 

 species of Crab of the genus Hyastenus, obtained near the Straits of Magellan 

 during the 'Challenger' Expedition, and proposed to be named H.conso- 

 brinus. 



Dr. A. G. Butler gave an account of two collections of Lepidoptera 

 received by the British Museum; one from Zomba, made by Mr. J. 

 McClounie, remarkable for the number of butterflies of the genus Charaoces 

 it contained; the other made at Fwambo, Lake Tanganyika, by Mr. 

 Alexander Carson, including not only rare species previously received only 

 from Zomba and Lake Mweru, but several novelties, the finest of which 

 was Junonia pavonina, a new form allied to J. artaxia. 



Mr. F. Chalmers Mitchell read a paper in which he described the 

 proventricular crypts he had found in a specimen of the African Tantalus, 

 Pseudotantalus ibis, recently living in the Society's Gardens. — P. L. 

 SoLATER, Secretary. 



