7iS Rev. T. A. Marshall's Monograph of 



and mandibles, testaceous. Antenna? one fourth shorter than the 

 body ; joints 1-2 equal, testaceous, the 2nd rounded ; 3rd very 

 long, cylindric, blackish like all the following. Mesonotum some- 

 times rufescent ; a fulvous spot is sometimes visible beneath the 

 wings ; metathorax carinated on its posterior half, the carina 

 bifurcate anteriorly, showing a tendency to areation. Wings sub- 

 hyaline or slightly infumated ; squamulae and radicles fulvous ; 

 stigma and neuration fuscous ; cubital nervure springing from the 

 point of junction of the two cubital areolets, which point represents 

 the 2nd abscissa. Legs, including the coxae, testaceous ; the hind 

 pair somewhat more highly coloured, or fulvous. Abdomen more 

 or less broadly cinctured with testaceous along the sutures, some- 

 times almost wholly testaceous, blackish at the extremity ; 1st 

 segment linear, faintly striolate, forming about \ of the abdomen ; 

 2nd similarly striolate at the base, widened posteriorly ; 3rd and 

 following short, compressed, the 3rd emarginate on either side. 

 Terebra usually concealed or hardly exserted ; its valves black. 

 ^ Similar ; antennse hardly shorter than the body, broadly testaceous 

 at the base, thence to the apex dull fulvous (in my specimen) ; 

 abdomen longer than that of the 9 > &"<i l^ss claviform. Length, 

 1^-2 ; exp. 2-31 Hnes. 



Generally distributed throughout Europe, wherever the 

 ubiquitous ants of the genus Myrmica are established. I 

 have met with it in the Jura mountains, at Ajaccio, and 

 three times in England, chiefly at Freshwater Bay, Pem- 

 brokeshire, where the ^ s were lurking in great abundance 

 among the rushes on the sand-hills, in company with 

 Myrmica scabrinodis, Nyl. I have never had the chance 

 of observing the manoeuvres of the species in activity, 

 vaulting over the nests of the ant, and pouncing down 

 upon the workers in order to deposit an e^g in each of 

 them. Such are the habits of the larger and much 

 handsomer species Gremieri, observed by Dr. Giraud {loc. 

 cit), from whom I extract the following passage : — " Dans 

 une excursion que je fis, le 6 juillet, dans les environs de 

 Vienne, raon attention se porta sur un troncjon de saule 

 en partie vermoulu, sur lequel se promenait une socidte 

 de tr^s petites fourmis dont je regrette de n'avoir pas 

 determine I'espece. Au dessus d'elles planait un nombre 

 assez considerable de petits hymenopteres; j'en mis une 

 quinzaine dans un flacon, et je les apportai vivants chez 

 moi. Apres m'etre assurd que j'avais affaire a la P. 

 huccata, je les placjai dans une botte vitrde qui me per- 



