466 PROCEEDINGS OF THE INDIANA ACADEMY OF SCIENCE. 



This is the common "carpenter ant," a large, entirely black species which 

 usually nests in old logs and stumps in shady woods. It may migrate into 

 old farm houses and surburban residences and become a pest by riddling 

 the wood-work with its inosculating galleries and by visiting pantries and 

 kitchens in search of sweets. 



42. C. herculeanus subsp. pennsylvanicus var. ferrugineus Fabricius S . — 



New Harmony; Grand Chain; Vineennes; Mitchell; Wyandotte. 

 A beautiful color- variety of pennsylvanicus, wath the legs, inferior and 

 posterior portions of the thorax, petiole and base of gaster rust red in the 

 worker and female. Its habits closely resemble those of the typical form, 

 but it seems to be less abundant and more local in its distribution. 



43. C. herculeanus subsp. ligniperda Latreille var. nave boracensis Fitch 



S 9 cf— Pine; Tippecanoe Lake; Hammond. 

 Nesting in old stumps and logs like petmsylvunicus, but differing in the 

 smoother surface and entirelj^ red thorax of the worker. 



44. C. caryae Fitch S — Wj'andotte. 



The types of this species, which I have recently found in the U. S. National 

 Museum prove to be identical with the form called by Emery C. cmarginatus 

 Latr. var. nearclicus. Later it was shown by Emery that Nylandcr's name 

 fallax should replace emarginntus. Now the unfortunate substitution of 

 caryae as the name of the species is necessitated by the fact that Fitch de- 

 scribed his Formica caryae in 1854, whereas Nylander did not give the name 

 fallax to the common European form of the species till 1856. The latter 

 form therefore becomes C. caryae Fitch var. fallax Nj'lander. 



C. caryae nests in dead branches. It is entirely black and much smaller 

 than C. pennsylvanicus, from which it may also be distinguished by the notch 

 in the anterior border of the clypeus of the worker and female. 



45. C. caryae var. minutus Emery 5 — Camelton; Grand Chain. 

 Smaller than the preceding, with more or less red on the thorax of the 



worker. 



46. C. caryae var. decipiens Emery. 



Cited by Emery from Indiana. His specimens were received from Mr. 

 Theo. Pergande, portions of whose original series are now in the U. S. Na- 

 tional Museum. 



