THE ENTOMOLOGIST. 63 



Abnormal Specimens of Anthocharis Cardamines, dc. — 

 Prof. Westwood exhibited two females of Anthocharis Car- 

 damines, each of which had a dash of the orange-colour of 

 the male on one of its fore wings ; also a female of Polyom- 

 matus Adonis, the left fore wing of which was dashed with 

 blue like the male ; also a male of Siderone Isidora, one side 

 of which was partially coloured like the female. The Presi- 

 dent suggested that the existence of specimens of this kind 

 might be explained on Mr. Darwin's theory of sexual 

 differences. The hypothesis was that the sexes of a species, 

 though now differently coloured, were once alike ; the 

 divergence from the original type was sometimes in one sex, 

 and in one direction only ; at other times in both sexes, and 

 in opposite directions ; and it might be that these curious 

 cases of the union of opposite sexual colours were only 

 instances of a partial reversion, or modifications of reversion, 

 to the original ancestral type. 



New British Coleoptera. — Mr. Janson, on behalf of Mr. 

 G. R. Crotch, exhibited Philonthus cicatricosus (Erichson), 

 a species new to this country ; and Dyschirius angustatus, 

 Hydroporus unistriatus, and H. minutissimus, all recently 

 added to the British list. The three first-named were 

 captured by Mr. Moncreaff at Portsea ; Hydroporus uni- 

 striatus had also been taken by Mr. Crotch at Merton, 

 Norfolk ; and Hydroporus minutissimus was taken by Mr. 

 Wollaston at Slapton Ley. All these have been previously 

 noticed in the ' Entomologist.' 



Catalogue of the Neuroplera of the British Islands. — 

 Mr. M'Lachlan presented the MS. of "• A Catalogue of the 

 Neuroptera of the British Isles," the first instalment of the 

 proposed Catalogue of indigenous insects; and on so doing 

 he remarked that the term Neuroptera had been taken in the 

 Linnean sense, as including the three sub-orders or groups 

 known as Pseudo-Neuroptera, Neuroptera-Planipennia and 

 Trichoptera. Of the Pseudo-Neuroptera, the Catalogue of 

 the family Psochidae was in accordance with Mr. M'Lachlan's 

 own Monograph of the British species, published in 1867 in 

 the third volume of the 'Entomologist's Monthly Magazine,^ 

 the synonymy after his own investigations ; the Perlidae had 

 not been very recently revised, and were in an unsatisfactory 

 state, but the Catalogue had been worked out from an. 



