442 Bibliographical Notices. 



with ants, which appeared furious at being disturbed : they stung 

 very severely. 



The ant belongs to the genus Myrmica of Latreille, and bears a 

 great resemblance to the common European Myrmica rubra. M. 

 Guerin-Meneville describes it under the name of 



Myrmica Sallei. M. fulva, rugosula, thorace postice bispinoso, 

 nodo primo infra mutico ; femoribus cruribusque apice valde inflatis ; 

 antennis abdomineque fulvis. 



The length of the males and neuters is 5 mill., of the females 7 mill. 

 The males diifer considerably in appearance from the other sexes. 



The nest is very remarkable from being composed entirely of a 

 brown, papyraceous substance similar to that of which the European 

 wasps make their nests. This paper is formed of the fibres of rushes. 



A nearly allied but distinct species of Myrmica was also found in 

 this nest by M. Salle, and is indicated by M. Guerin under the name 

 of M. cariniceps. 



Plate 3 of this volume of the * Revue * contains figures of the dif- 

 ferent sexes of Myrmica Sallei^ and also of its nest. This plate is 

 contained in the third number. 



The remainder of the number is occupied by reports of the meet- 

 ings of the " Academic des Sciences " of 26th January, and 2nd, 9th, 

 1 6th, and 23rd February, and some notices of new works. 



The third number contains — 



I. Observations on the propositions submitted by M. Dareste to 

 the Academy of Sciences, regarding the Convolutions of the Brain, 

 by M. P. Gratiolet (pp. 97-113). 



In this memoir the author supports the views formerly advanced 

 by himself in a paper laid before the Academy of Sciences, to which 

 those of M. Dareste are directly opposed. M. Gratiolet considered, 

 from the study of the convolutions of the brain in the Apes, that the 

 number and distinctness of these convolutions are greatest in those 

 animals of each group which display the greatest amount of intelli- 

 gence. M. Dareste, on the other hand, considers that those animals 

 in which the brain has the greatest volume are the most intelligent, 

 and that the degree to which the convolutions are developed is in re- 

 lation with the size and not with the intelligence of the animal. He 

 also states that the brain is proportionately larger in small animals 

 than in large ; consequently, says M. Gratiolet, according to M. Da- 

 reste, the *' intelligence of animals is in an inverse ratio to their size." 



In opposition to these views and in support of his own, M. Gratiolet 

 institutes a comparison between the cerebral organs of various ani- 

 mals. He shows that in many cases the brains of small animals have 

 a greater number of convolutions than those of others of much larger 

 size. Thus he compares the brain of the ocelot with that of the ja- 

 guar, and that of the Bornean bear (Ursus ewyspilus) with that of the 

 great white bear. The brains of these animals, that of the Guinea 

 pig and that of the Echidna, are represented on the four plates which 

 accompany the memoir (pi. 4-7). 



