Miscellaneous. 355 



The species noticed in this paper were 73 in number, referred by 

 the author to the genera Cellaria, Membranipora, Micropora, Mono- 

 porella, Steganoporella, Gribrilina, Mucronella, Microporella, Lunu- 

 lites, Porina, Lepralia, Smittia, Schizoporella, Mastigopora, Rete- 

 pora, Rhynchopora, Cellepora, Lelcythopora, and Selenaria. Six 

 species were described as new, namely Microporella pocilliformis, 

 Lepralia confinita, Cellepora clivisa, C. biradiata, Schizoporella pro- 

 tensa, and Membranipora temporaria. 



MISCELLANEOUS. 



On the Discovery of an Impression of an Insect in the Silurian 

 Sandstone of Jurques (Calvados). By M. C. Beongxiart 

 The author refers to the discovery by Prof. Lindstrom of a scor- 

 pion in Swedish Silurian rocks * as proving the existence of 

 terrestrial air-breathing animals at that early period. Insect- 

 remains had been found in Carboniferous and Devonian rocks, but 

 hitherto in no older deposits. He has received from Prof. 

 Douville a fragment of Middle-Silurian Sandstone from Jurques 

 belonging to De YerneuiPs collection, which shows the impression 

 of an insect's wing, which, though imperfectly preserved, shows 

 most of the nervures. M. Brongniart describes it as follows : 



"This wing, which measures 35 millim. in length, belon<>ed to a 

 Blattide ; the humeral area is broad, and we see in it the superior 

 humeral vein and the inferior humeral vein, which is bifurcate at 

 its extremity ; the vitreous or median vein also divided into two 

 branches ; the superior and inferior discoidal veins and their very 

 oblique divisions which unite at their extremity, as is the case in 

 certain Blattae of the present epoch ; we can trace the anal vein 

 which is nearly straight and extends almost to the end of the wing' 

 and also the axillary veins, which are parallel." 



The length of the anal vein and the narrowness of the axillary 

 area distinguish this from all other wings of cockroaches, whether 

 living or fossil, the nearest approach to the fossil among Carboni- 

 ferous species being made by Progonoblattbm Fritschii, Heer, and 

 Gerablattina fascigera, Fcudder. For the species the author pro- 

 poses the name of Palmoblaitina Douvillei. As the sandstone of 

 Jurques belongs to the Middle Silurian, this cockroach is of older 

 date than the Scotch and Swedish scorpions. — Comptes Rendvs 

 December 29, 1884, p. 1164. 



The Royal Society of New Soidh Wales. 

 The Royal Society of New South Wales has put forward a list 

 of subjects for memoirs, offering its medal and a money-prize of ,£25 

 for the best communication in each case, " provided it be of sufficient 

 merit." The memoirs must contain the results of original research 

 and the successful ones will be published in the Society's annual 

 * See ' Annals ' for January 1885, p. 76. 



