Entomological Society. 145 



Mr. Frederick Smith exhibited the sexes of six species of Andrena, 

 which he had observed in coputd, thus proving the specific identity of 

 the different sexes in these species of this troublesome genus ; 

 amongst them was Andrena fulva, which was proved to be the fe- 

 male of Andrena armata, and A. Clerckclla. 



^ir. Westwood exhibited a specimen of Mijrmecocystus mexicunus, 

 V^esm., a species of ant, some of the neuters of which are of the 

 ordinary form, whilst in others the abdomen is immensely swollen 

 and globular : these latter individuals are described as never quitting 

 the nest, and as making a kind of honey. He also observed upon 

 the different kinds or degrees of development noticed among Hijme- 

 nopterous insects, especially the several kinds of neuters of the hive- 

 bees, called by Huber, &c. black-bees, nurser-bees, wax-workers, &c. 

 Messrs. Waterhouse and Newport doubted however whether there 

 were any real distinctions between these kinds of individuals, as they 

 had never been able to discover any specimens according with such 

 descriptions. Mr. Shuckard also stated his opinion that there was 

 never more than one kind of neuter among the ants. Mr. F. Smith 

 on the contrary stated that he had constantly found two kinds of 

 neuters in the nest of the Formica sanguinea. 

 The following memoir was read. 



Description of a subgenus of Coleopterous insects closely allied to 

 Carabus. By G. R. Waterhouse, Esq. 



The insect here described agrees in the majority of its characters 

 with Carabus, but differs in having the thorax smooth and convex, 

 without reflected margins, and fovea at the posterior angles, the 

 antennae incrassated in the middle, with the 3rd joint long, the 

 head large and nearl}^ as broad as the thorax, the elytra depressed 

 and the legs long ; although destitute of the velvet-like soles to the 

 fore tarsi which distinguish the male Carabi, the anterior tarsi are 

 not dilated. The name proposed for this insect is 



Aplothorax Burchellii, W. Niger, thorace cordiformi antice et 

 post ice truncate, angulisque anticis et post ids rotundatis, supra 

 IcEvi et convexo ; elytris jiunctato-striatis, striis punctisque crebris 

 at non profundis ; inter strias 3 et 4 et 1 et S punctis majoribus 

 cum illis striis confluentibus. Long. corp. lin. 15|. Inhabits St. 

 Helena. W. Burchell, Esq. In Mus. D. Hope. 



July 6th.— The Rev. F. W. Hope, President, in the Chair. 



The President exhibited part of a splendid collection of Coleoptera 

 received by him from Mexico. 



Mr. Westwood exhibited portions of the branches of an apple 

 tree bored into by the larva of Zeuzera JEsculi, communicated by 

 Dr. Lindley. 



Mr. Raddon exhibited a beautiful Lamia from the Gold Coast of 

 Africa, as well as a species of Koctua and Cerura which he had ob- 

 tained from Mr. Bradford, of Bewdley, and which he believed to be 

 new to the British lists of insects. He also stated that Lamia textor 

 had recently been taken at Walham Green. 



Mr. Marshall stated that Mr. Doubleday had informed him that 

 Ann. l^ Mag. N. Hist. Vol.x'ii. L 



