Packard.] J- < " [March 17, 



there is no distinct cervical shield. There is a dorsal row of aljout twenty 

 ochreous rust-red patches, very irregular in sliape, connected by two 

 short parallel wavy lines of the same color. Each spot is situated on a 

 deep velvety black field, ending behind in two conspicuous large black 

 dots. From each red patch arise numerous hairs, forming a wedge-sliaped 

 ochre-yellow tuft. The ground color of tlie body is deep blue, spotted 

 and mottled with black. There is a lateral row, one to each segment, of 

 black dots, irregularly surrounded by ochrered. Just below is a row of 

 conspicuous short, thick tufts of white hairs situated near the front edge 

 of each segment. Below each black spiracle is an obscure flesh-colored 

 diffuse patch enclosing a small black dot, while beneath is a long Ijlack 

 patch. All the legs, both thoracic and abdominal, and the under side of 

 the body are livid blackish. The few dorsal hairs (the ochreous ones ex- 

 cepted) are black, those on the thoracic segments being longer than the 

 others, while the lateral and ventral hairs are grayish, with an intermix- 

 ture of ochreous ones. 



The larva of this species differs from all the others of the genus known 

 to me by the large, conspicuous, ochreous-red, dorsal spots giving rise to 

 the peculiar wedge-shaped ochreous tufts, and by the lateral row of short 

 white tufts, while the body in general is much more hairy than in the 

 other species. No eastern species approaches it in these characters. 



Cltsiocampa fragilis (Stretch) (?). 



This larva, referred with some doubt to the above species, was received 

 from Mr. J. J. Rivers, who collected it in the Sierra Nevada. The fol- 

 lowing description was made from a blown specimen : 



Full-groion Larva. — Length, 43-44 mm. Head bluish, mottled with 

 heavy coarse black spots, with a tendency in their arrangement similar to 

 that in G. thorncica. The cervical shield is very indistinct. The body is 

 pale blue, with black specks and very irregular fine ochreous-red lines, 

 more or less broken and confluent on the first three or four segments. 

 The species is at once distinguished by the dorsal row of long, narrow, 

 wliilish-blue, distinct spots, beginning with the second thoracic segment, 

 each spot extending nearly the whole length of the segment. On each 

 side of the same segments are two large, conspicuous, irregular spots of 

 the same color, beneath whicli is a band made up of broken, irregular, 

 ochre- red hairlines. The spiracles are situated in a broad bluish band. 

 Body beneath black, with pale flesh-reddish or ochreous patches between 

 all the legs, both thoracic and abdominal. There is a black dot near the 

 base of the four median pairs of abdominal legs. The hairs above are 

 rather denser than in O. thuracica, and ochreous ; those on the side are 

 ochreous running into gray, those on the sides of the thoracic segments 

 being whitish. 



Tins larva is at once known by the conspicuous, long, dorsal, pale-blue, 

 almost whitish-blue spots, flanked on each side by two large, distinct, 

 irregular spots of the same hue, with the space between conspicuously 



