- ,( I MYRMICID.fi. 



This insect is very rarely met with in this country, and may be 

 considered one of our scarcest species of ants. Females have 

 occasionally been taken on the wing, or, attracted by lights, have 

 flown into apartments ; but I do not know of anv one discover- 

 ing its fbrmicaiium. Mr. Westwood, I believe, first discovered 

 the species in Britain, and several specimens were taken bv the 

 late Mr. [ngpen. Dr. Power discovered it at Brighton, and he 

 has also taken it at Merton in Surrey. Although I have dili- 

 gently searched after these insects for years, I never met with a 

 single example. Mr. Janson found this insect in company with 

 Form ica fuliginosa. 



Fam. 3. Myrmicidae, Smith. 



The number of joints in the labial and maxillary palpi differ- 

 ing in the species; eyes usually present in all the sexes; males 

 and females furnished with ocelli, obsolete in the workers ; the 

 petiole of the abdomen with two nodes; the females and workers 

 provided with a sting ; the pupae not enclosed in cocoons. 



Genus 1. MYRMICA. 



Formica, pt., Linn. Syst. Nat. i. 963 (1766). 

 Myrmica, Latr. Gen. Crust, et Ins. iv. 131 (1804). 



The labial palpi four-jointed ; the maxillary palpi six-joiuted ; 

 the anterior wings with the nervure at the base of the marginal 

 cell uniting with the transverse cubital nervure, crossed by a 

 transverse nervure ; antennas clavate ; the club three-jointed in 

 the first division. 



1. Myrmica ruginodis. 



Fannina— Testaceo-ferruginea, sparse flavido-pilosa; capite supra, 

 abdominis dorso medio, scutello et macula ventrali plus mi- 

 nusve fuscescentibus ; scapo ad basin arcuatim flexo ; capite 

 thoraceque longitudinaliter striatim rugosis ; metathoracis 

 spinis longiusculis ; alis hyalinis, nervis et stigmate subflaves- 

 centibus ; nodis petioli rugosis. 



Operaria.— Testaceo-ferruginea, sparse flavido-pilosula ; capite 

 supra abdominisque dorso medio fuscescentibus ; scapo basin 

 versus arcuatim flexo ; capite thoraceque longitudinaliter 

 striatim rugosis ; metathoracis spinis binis validiusculis longis : 

 nodis petioli rugosis. 



