86 PROCEEDINGS OF THE CALIFORNIA 



of Los Angeles. The others, received from the gentlemen of the survey, were 

 mostly collected at the headwaters of Tuolumne Eiver, but some from Yosemite 

 Valley. 



2. M. collina, Behr, n. sp. 



Alae omnes supra fulvae, nigro clathratae, posticae inter fasciam primam et 

 secundam serie punctorum nigrorum instructae. 



Alae anticae subtus fulvae apicem versus gilvescentes, ubique signaturis fuscis, 

 marginemque versus aliquot maculis nigris obsitae. 



Alae posticae subtus gilvae, hinc pruina argentea indutae, signaturis fuscis 

 in morem Argynnidum undulatis, binis semper per umbram quandam conuexis, 

 hinc et illinc confluentibus, serie punctorum nigrorum halone amplexorum ut 

 supra inter fasciam primam et secundam pertranseunte. Lunula submar- 

 ginalis inter costam quintam et sextam major quam reliquae lunulae subniar- 

 ginales, et umbra brunnea amplexa. 



This species is not rare in the vicinity of San Francisco, and the hills of 

 Contra Costa, especially on the grassy valleys, along creeks, and oja hillsides 

 with a varied vegetation of herbaceous plants. There must be many generations 

 of these annually, for the perfect insect is found from spring to autumn. 



3. M. campestris, Behr, n. sp. 



Alae supra nigrae fasciis rnacularibus ochraceis et aurantiacis alternantibus. 

 Series punctorum nigrorum in alis posticis in fascia aurantiaca submarginali. 



Alae anticae subtus aurantiacae apicem versus luteae. Macula disci et fascia 

 intermedia infracta luteae, haec intus nigro marginata. Alae posticae subtus 

 luteae, linea transversa undulata divisae ; A radice usque ad lineam transversam 

 brunneo signatae et prope mediam lineam transversam umbra obscura indutae ; 

 quae umbra extenditur usque ad seriem punctorum. Lunula inter quintam 

 costam et sextam Candida, aucta et umbra amplexa. 



This species is very common in different localities, especially on marshy places, 

 where Hemizonia abounds. Seems to be peculiar to the lower regions, and 

 produces several annual generations. 



4. M. pratensis, Behr, n. sp. 



Alae supra nigrae fasciis rnacularibus fulvis instructae. Maculae fasciae 

 submarginalis alarum posticarum singulae singula puncta nigra gerentes. 



Alae anticae subtus ochraceae maculis pallidioribus hinc et illinc signatae. 

 Marginem versus posticam extant aliquot maculae nigrae. Alae posticae sub- 

 tus hepaticae lineis undulatis, maculis, umbris serieque punctorum cunctis aeque 

 brunneis instructae. Lunula submarginalis vix pallidior et umbra amplectente 

 tantum e reliqua ala discerni potest. 



This species is found on grassy hillsides and is common enough in some 

 localities near San Francisco. Several generations are found from spring to 

 the beginning of the rainy season. 



Before I had a sufficient series of these nearly allied species in my possession, 

 I considered them local varieties of one single species. Afterwards I had an 

 idea that two of them, M. collina and pratensis might be seasonal varieties or 

 alternating generations, like for instance Arachnia Prorsa, whose vernal genera- 



