I received this species from the headwaters of the Tuolumne River where it was collected during the stay of the State Geological Survey in the elevated and uninhabited regions. I take this opportunity of showing my respect for Prof. Whitney and the other members of that learned party, to all of whom I am under obligations for the kindness with which, under all kinds of hardships, they collected materials for a Fauna of our Californian Lepidoptera. 3. _M. Gabbii_, Behr, n. sp. Alae maris supra ut in _M. Palla_, feminae fasciis transversis alternantibus luteis et fulvis totae nigro clathratae. Alae inferiores ut in _M. Palla_, sed maculae radicales candidae pruinaque argentea renitentes ita ut fascia intermedia lunulaeque marginales. Fasciae, maculae, et margo aurantiacae ordinariae. Fasciae submarginalis spatium, quae non occupatur lunulis aurantiacis, sulphureum. I received this species from the mountains near Los Angeles and have seen a series of specimens constantly showing the same characters. This description I made from a pair kindly communicated to me by Mr. Lorquin. 4. _M. Hoffmanni_, Behr, n. sp. Alae et maris et feminae a radice usque ad medium nigrae hinc et illinc maculis luteis fulvisque obsitae, a media ala luteae marginem versus fulvescentes plus minus nigro clathratae. Alae inferiores subtus ut in _M. Palla_, sed fascia submarginalis inter lineas undulatas nigras, non lunulis sed punctis omnino rotundis constituta. This species is less rare than the two preceding. Nevertheless it has not yet been found near San Francisco and seems peculiar to the higher regions of California. MELITÆA, Type III. Of this type, we know already as many Californian as European species, but except _M. Phaeton_, I do not know any Eastern representative of this type. The most robust and gaily colored species belong to this type and it is one of the most predominant of the diurnal types in California, not only from the number of its species but also of its individuals. 1. _Melitæa Chalcedon_, Doubleday. This showy species is very common around the Bay of San Francisco. The caterpillar is somewhat of the coloration of that of _Vanessa Antiopa_, but short and thick like all the _Melitæa_ caterpillars and beset with short fleshy thorns. The dorsal row of spines is brick red and so is the lateral stripe above the feet. All other parts, both of the body and spines, are black, which tint, being thickly sprinkled with white dots has a bluish luster like the same tint in the caterpillar of _V. Antiopa_.