Zl^ Bulletin American Musettm of Natural History. [Vol. XXI, 



excavated nests from Aug. 20 to Sept. 10. The larvag have four 

 pairs of glutinous tubercles on the dorsal surface of the third to 

 sixth abdominal segments. Like the larvas of Stigmatomma they are 

 fed by the workers with fragments of insect food. The pupae are 

 enclosed in short, elliptical, sulphur yellow cocoons which have a 

 black meconial spot at the posterior pole. When the nests are dis- 

 turbed the ants are careful of the eggs and larvae, but more neglectful 

 of the cocoons. Ergatoid females are occasionally found. They 

 have ocelli and larger eyes than the normal workers and a thorax 

 intermediate in structure between that of the worker and the winged 

 female. For further notes on the habits of this interesting species 

 see my paper: 'The Habits of Ponera and Stigmatomma' (Biol. Bull., 

 Vol. II, No. I, Nov., 1900, pp. 43-69, 8 figs.). 



Subfamily Myrmicin^. 

 Myrmecina Curtis. 



7. M. graminicola americana Emery. — Riverton (Viereck) ; Lake- 

 hurst (Wheeler). 



In the latter locality a single colony of this subspecies was found 

 nesting in the sand in plesiobiosis with a colony of Myrmica puncti- 

 ventris var. pinetorum var. nov. Usually M. americana nests in 

 rotten wood or under stones in damp shady woods. It is a rare and 

 local species. 



Tomognathus Mayr. 



(Subgen. Protomognathus Wheeler). 



8. T. (P.) americanus Emery. — This rare species has been found 

 in Pennsylvania and at Bronxville, New York, so that it can hardly 

 be absent from New Jersey. It lives as a parasite in the colonies of 

 Leptothorax curvispinosus Mayr. The female is winged and not 

 ergatoid like the only other known species of the genus {T. suh- 

 IcBvis Nyl.) of Europe. On this account I have thought it best to 

 create a new subgenus for the American species. 



Monomorium Mayr. 



9. M. pharaonisLww. — There can be little doubt that the state- 

 ment in Dr. Smith's list that this cosmopolitan house ant occurs 

 "throughout the State commonly," is correct. It lives only in 

 houses, warehouses, ships, etc., and has been carried to the different 

 seaports of the globe from its original home in the warmer regions of 



