THE ENTOMOLOGIST. 215 



interior was corapletely clestioyed. The metamovphosis took 

 place inside the nut. Mr. M'Lacblan, in connexion with the 

 above, exhibited another species of pahn (Copernicia conifera) 

 from Rio Janeiro, forwarded to him by Professor Dyer, which 

 were also infested with a species of Caryoboriis (C. bactris, 

 Liiiii.). In this case each nut served as food for a single larva 

 only, which bored in it a cylindrical hole of considerable size 

 and depth. 



Fiutgus on Insects. — The President exhibited the larva of 

 an Australian species of Hepialus (he believed from Queens- 

 land), bearing a fungus with four or five different branches 

 issuing from the back of the neck and the tail. Also a fungus 

 growing from the back of a Noctua pupa. 



Mhnicry in Souih African Insects. — Mr. M'Lachlan, on 

 behalf of Dr. Atherston, of South Africa, exhibited a pair of 

 very singular Orthopterous insects (belonging to the Acry- 

 diidae), which, in colour and in the granulated texture, so 

 exactly mimicked the sand of the district as to render it 

 almost impossible to detect it when in a quiescent state. 

 The name of the insect was uncertain, but it was supposed to 

 approach the Trachyptera scutellaris, Walker. Also some 

 singular oval, flattened cases, o])en at each end, and from six to 

 eight lines in length, formed of silk, to which was externally 

 fixed a quantity of fine light brown sand. The cases were 

 found under stones in sandy districts, and were stated by Mr, 

 Charles O. Waterhouse to belong to a beetle of the genus 

 Paralichas (one of the Dascillidae). Also the cases of a 

 species of Oiketicus of peculiar structure: the inner lining of 

 the tube was, as usual, composed of toughened silk ; but to 

 this was attached, externally, a quantity of fine sand, and 

 outside this a number of small angular pebbles, only the 

 tail-end bearing a few rather long twigs and species of grass- 

 stems. Thus the cases differed from those of most species in 

 which substances exclusively vegetable were attached exter- 

 nally, the addition of the pebbles making the cases (which 

 were nearly two inches in length) unusually heavy. 



Singular Forms of Coleopterous Insects. — The President 

 read descriptions and exhibited drawings of two very singular 

 forms of Coleopterous insects from Mr. A. R. Wallace's 

 private collection. For the first, which belonged to the 

 family Telc])horidcC, he proposed the generic term Astychina, 

 remarkable for the Ibrm ol" the two terminal joints of the 



