278 Geological Society. 



Arlhromacra hSgonice^ sp. n. 



Elongata, aureo-cuprea, nitida ; thorace clare punctate ; antennis 



pedibusque obscure brunneis vel infuscatis. 

 L. 9-9i mill. 



Elongate, golden coppery ; the head coarsely punctured, 

 with a median fovea betv\'een the eyes ; the thorax very 

 clearly punctate, cylindrical, with the anterior and basal rim 

 markedly raised ; the elytra are sculptured like those of 

 A. viridissima ; the antenntu and legs obscurely black, with 

 the intermediate and hind tarsi less dark. The antennae in 

 this species are formed somewhat like those of A. sumptuosay 

 but they are more slender and joints 8, 7, 6 less obconical. 



This species is separated from the others of this series at 

 once by the clear punctuation of the thorax, the punctures are 

 clearly separated one from another. In form it is inter- 

 mediate between A. su/nptuosa and decora. 



Hah. Yuyama in Higo, May 8th, 1881. 



Arlhromacra decora. 

 Lagria decora, Mars. Ann. Soc. Ent. Fr. 1876, p. 339. 

 Marseul placed this insect in the genus Lagria ; it is of a 

 greenish-brassy tint, with the antennre (apex excepted), tibiae, 

 tarsi and base of the femora testaceous. The joints of the 

 antennae are formed like those of A. higoniae^ but they are 

 shorter and less slender. 



Hah. Kobe, near the base of Maiyasan. Apparently very 

 local. I took one specimen in 1871 and on returning to the 

 place on the 11th June, 1881, I found seven others. 

 [To be continued.] 



PROCEEDINGS OF LEARNED SOCIETIES. 

 GEOLOGICAL SOCIETY. 



January 9, 1895. — Dr. Henry Woodward, F.Il.S., 

 President, in the Chair. 



The following communication was read : — 



' The Formation of Oolite.' By E. B. Wethered, Esq., F.G.S. 



In previous communications the Author has described pisolites 

 formed by the growth of GirvaneUa, and some true oolitic granules 

 having a like origin. He has long entertained the opinion that aU 

 oolitic granules are of organic origin, but has not, up till now, been 

 in a position to prove this. 



He describes the form of the granules, which frequently exhibit 

 a series of concentric layers of calcium carbonate around a nucleus, 

 and also dark stria? and patches, the former placed more or less at 



