NOTES ON HYMENOPTERA. 



125 



Genus Tapinoma. 

 Tapinoma erratica. 

 „ polita. 



Genus Ponera. 

 Ponera contracta. 

 „ punctatissima. 



Genus Myrmica. 



Myrmica ruginodis. 

 ,, scabrinodis. 

 ,, laevinodis. 

 ,, sulcinodis. 

 ,, ]obicornis. 



Genus Tetramorium. 

 Tetramoriuna caespitum. 

 ,, lippula. 



Genus Leptothorax. 



Leptothorax acervorum. 



„ Nylanderi. 



„ unifasciata. 



,, simillima. 



Genus Stenamma. 

 Stenamma Westwoodii. 



Genus Diplorhopthum. 

 Diplorhoptrum fugax. 



„ molesta. 



Genus Pheidole. 

 Pheidole laevigata. 



Genus Myrmecina. 

 Myrmecina Latreillii. 



In 1865, our list will be found to consist of twelve species 

 of the genus Formica, two of Tapinoma, and two oi 

 Ponera, to which must be added thirteen species of 3Iyr- 

 micidcB, amounting in the aggregate to thirty-one species, 

 being an increase of thirteen since the publication of the first 

 volume of the Annual. 



In the above list I have included Pheidole Icevirjata, un- 

 doubtedly an imported species, introduced within a very 

 recent period, but so firmly has it estabhshed itself, in some 

 parts of the metropolis, as to have become a household pest, 

 whilst at the same time it is an ant common to the majority 

 of hot-houses, so that it may be considered as securely natu- 

 ralized as the more common DiplorJtoptrum molesta. 



FORMICID^. 



Last year I had the pleasure of recording the discovery of 

 a most interesting species of d.\\\,i\\e Foinnica exsecta : only 



