June 1S93.] 



PSYCHE. 



479 



here concerning the other two species referred 

 to, — 6". maciilipennis Scudd. and 5. aequalis 

 Scudd. From my collections gathered dur- 

 ing the last three seasons and notes concern- 

 ing them taken in the field, I am fully con- 

 vinced of the distinctness of these species. 



5\ aequalis I have found one of the most 

 plentifuhlocusts in New England, everywhere 

 common on dry soil, and very variously 

 colored. With this species I unite 5. bili- 

 neatus Scudd. 



5. maculipennis on the other hand I have 

 taken only in Southern New England, where 

 I have";found it most plentiful near the coast, 

 preferring sandy soils. This species also is 

 very variously colored. Individuals of both 

 species may be wholly either brown or green 

 or any mixture of the two, but green males 

 are tbe least'common of any of the forms and 

 l n some places are exceedingly scarce. Not 

 infrequently specimens show considerable 



rose-red above or may be very largely black- 

 ish-fuscous throughout. 



The structural characters presented by the 

 head, vertex, and pronotum are the best 

 means of separating these species from each 

 other and from olivaceus, but the length and 

 markings of the tegmina are also helpful. 



It may be of interest in this connection to 

 state that I have examined some of the speci- 

 mens collected by Prof. S. I. Smith at Nor- 

 way. Me., and referred to in his paper on the 

 Orthoptera of Maine as S. maculipennis, and 

 also some in the collection of Cornell Univer- 

 sity collected in New York and referred to in 

 Prof. Comstock's Introduction to Entomology 

 under the same name. All of these I am dis- 

 posed to consider as belonging to aequalis. 

 Some of the Norway. Me., specimens show 

 an unusual length of wing but assuredly are 

 not maculipennis Scudd. I have also exam- 

 ined the types in Mr. Scudder's collection. 



ADDITIONS TO THE LIST OF BOMBYCES AT POUGHKEEPSIE, 



BY HARRISON G. DYAR, BOSTON, MASS. 



In the August, 1S91, number of 

 Psyche I gave a list of the Bombyces 

 found in Poughkeepsie, N. Y., and in- 

 cluded four species of Arctia. Further 

 study has shown that this list must be 

 increased to seven species. From my 

 series of A. virgo I have picked out two 

 specimens which are referable to A. 

 intermedia Str. They are of the form 

 in which the markings of the fore wings 

 are practically as in A. virgo, being 

 less extensive than in Stretch's figure. 

 This form differs from A. parthettice 

 Kirby only in size, and may prove to be 

 a southern race of it. Parthenice occurs 

 not rarely at Plattsburgh, N. Y. ; but I 

 have never met with it in Dutchess 

 County. The $ genitalia of these forms 



do not differ specifically. I have made 

 drawings from balsam mounts and 

 cannot find any differences which are 

 greater than the range of individual 

 variation. From the same parts in A. 

 virgo they differ slightly and probably 

 to a degree which is specific. 



Under the term nais in my list were 

 included all the forms with the pattern 

 of marking of that species. I am now 

 satisfied that we have not two species, 

 nais and 'decorata, as they stand in 

 Professor Smith's list, but three wcdl 

 defined and distinct species, differing in 

 markings of the moth, in the larva ac- 

 cording to the observations of Prof. G. 

 H. French and Mr. J. Doll, and in the 

 structure of the $ genitalia. In another 



