JOHN A. GROS8BECK. 335 



NOTES ON CERTAIN DESCRIBED SPECIES OF 



GEOMETRID^, WITH DESCRIPTIONS 



OF A FEW NEW SPECIES 



BY JOHN A. GROSSBECK, NEW BRUNSWICK, N. J. 



In the course of my studies on the Geometridse I have accumula- 

 ted a number of notes which, for the most part, are based upon 

 specimens in the Hulst collection at New Brunswick, N. J. These 

 are presented in this paper, together with descriptions of several 

 new species. 



Racliela latipennis Hulst (Trans. Amer. Ent. Soc, xxiii, 254, 1896). 



The single male type from California is the same as Eachela occi- 

 dentalis Hulst (Trans. Am. Ent. Soc, xxiii, 254, 1896). This latter 

 was described from Victoria, Brit. Col. (Danby), from one male and 

 two females. The male is smaller than the average form of occiden- 

 talis and the maculation is well marked. Latipennis is a large 

 moth and rather abraded, hence Hulst's comparison with bruceata 

 instead of occidentalis. The specimen is certainly unlike the male 

 type of occidentalis, but I have a series of intergrades both in size 

 and ornamentation from British Columbia that leaves absolutely no 

 doubt as to its correct position. Latipennis is described immedi- 

 ately after occidentalis on the same page and thus falls before that 

 name. 



Rachela hyperborea Hulst (Trans. Am. Ent. Soc, xxiii, 254, 1896). 



The description of this species follows that of latipennis. The 

 one type in the Hulst collection from Alert Island, Alaska, is 

 smaller than any occidentalis I have seen and approaches bruceata 

 in color. It may be an extreme northern form of occidentalis rather 

 than a distinct species. The maculation is indistinct and otherwise 

 exhibits the peculiarities effected by a cold climate. 



Encestia rotundata Pack. var. arizonata Grt. (Can. Ent., xv, 126, 1883). 



I have a specimen from Yuma County, Arizona, received through 

 Professor Smith, which from the description I take to be arizonata 

 Grt. It is truly quite different from Packard's types of rotundata 

 and therefore from his description, but Packard's specimens were old 

 and worn and are otherwise so nearly like Grote's variety that the 

 latter is hardly worth more than a synonym. 



TKANS. AM. ENT. SOC. XXXIII. NOVEMBER, 1907. 



