126 



BRITISH ANTS. 



transversely striate. Petiole rugose, concave anteriorly, forming a distinct 

 angle in profile ; post-petiole longitudinally wrinkled. Long. 3-5-5 mm. 



Fig. 68. Antenna of Myrmica, scabrinodis 



$ Lighter or darker reddish yellow, ivith dark patches on the thorax, some- 

 times nearly the whole of the upper surface is dark brown, with lighter mandibles, 

 antennae and legs. 



Sculpture stronger, other characters as in the ty. Wings fuscous at the 

 base. Long. 5- 8-6- 5 mm. 



$ Blackish brown, shining, club of antennae, tarsi and apex ofgaster yellowish. 



Head finely longitudinally striate ; antennae : scape short, only as long 



Fig. 69. Antenna of Myrmica scabrinodis $. 



as the three first joints of the funiculus together ; club more or less four- 

 jointed. Wings as in the $. Femora thickened in the middle. Long. 4-8-6 

 mm. (5-5-6 mm. teste Forel.) 



Original description of Myrmica scabrinodis Nylander [Acta. Soc. 

 Sc. Fenn. 2 930 (1846)] : 



" Operaria : testaceo-ferruginea sparse flavo-pilosula, capite supra et 

 abdominis dorso medio fuscescentibus ; capite, thorace et petiolo longi- 

 tudinaliter striatim profunde rugosis ; antennarum scapo ad basin flexo, 

 supra geniculo a lobo oblique-transversim posito ; metanoti spinis longis. 



^. Long. If- 2 lin. Simillima iterum praecedenti, sculptura rudiori, area 

 frontali obsoleta et antennarum scapo ut in diagnosi formato. Striae capitis, 

 thoracis petiolique rudes, profundiores quam in praecedentibus, pilositas 

 corporis forte densior et praeterea lamina frontalis aliter constructa, infra 

 nempe margine utrinque aurito-dilatato tenui, processum lamelliformem 

 subsemirotundatum parum elevatum, radices antennarum obtegentem, 

 formante. Area frontalis triangularis parva fere obsoleta. Scapus anten- 

 narum basi flexa supra lobo oblique-transverso parvo, subsemirotundato, 

 antice concaviusculo, apice compresso, a parte anteriori viso geniculum 

 parum acutiusculum ostendente. Spinae metanoti longae. Cetera proxime 

 ut in praecedente. 



Femina : testaceo-ferruginea sparse flavido-pilosula, capite supra et 

 abdominis dorso medio fuscescentibus, thorace quoque supra et mesopleuris 

 cum sterno parum fuscescentibus ; capite, thorace et petiolo longitudinaliter 

 striatim profunde rugosis ; antennarum scapo ad basin geniculatim flexo, 

 geniculo supra angulato ; spinis metanoti longiusculis ; alis hyalinis obso- 

 letissime cinereo-pallescentibus, stigmate ejusdem coloris distincto. 



$. Long. 2 lin. sat similis operariae suae, sed major obscurior. Caput 

 fuscum, infra cum genis, mandibulis et antennis ferrugineo-testaceum. Areae 

 triangularis frontis vix vestigium. Scapus flexura basis supra angulo subrecto, 

 subtus arcuata (lobo distincto nullo). Spinae metanoti ut in specie praecedente 

 sed nodi petiolares rudius sulcatim rugosi. Alae hyalinae albescentes, anticae 

 2 lin. longae, a stigmate versus basin obsoletissime cinereo-pallescentes. 

 Cetera ut in diagnosi vel in praecedente. 



