432 



white, with pale brown blotches; prolegs dull white, crochets semicircular. 

 Length of mature larva 16 mm., width (at seg. 6) 275 mm. 



"Described from fresh specimens, measurements from alcoholic material. 



"Pupa. — Slender, cylindrical, slightly narrowest above middle, color pale 

 yellowish brown, darker at base of abdominal segments, and very dark brown 

 at the obliquely truncate cephalic end, which is heavily anned with numerous 

 little spines. Of these, there is a strong ridge of large ones at the base of each 

 antenna above, and a smaller group on each shoulder. Brown hairs especially 

 along dorsal edge of this area and on thorax and abdomen. On lower dorsal 

 border of segments 4, S and 6 of abdomen is a row of spines pointing obliquely 

 cephalad, and on the remaining segments is a row pointing obliquely caudad. 

 Somewhat below the lateral line of each of the spiny segments are other spines 

 arranged in a row, on segments 4, 5. and 6 few, on the remaining segments 

 becoming more numerous. Fused leg and wing tips free from body. Length 

 15-18 mm., width at thorax 2.80 mm. 



"Described from alcoholic specimens. 



"The larva bores a smooth cylindrical passage in the stem of Baccharis 

 pihdaris, and the oblique opening can be readily detected by the quantity of 

 pale-colored frass on the ground below. The galleries may be in the smaller 

 stems or in the main trunk and at least partly above ground. On tall shrubs 

 the caterpillar may be found working high up in the stems. Several parallel 

 passages often occur in one stem, and are usually quite straight and almost 

 invariably open on the under side of the branch. 



"The pupa, which is very active, lies some distance from the bottom of 

 the gallery, but may move considerably therein. The pupal chamber is not 

 silk-lined. A short search in winter revealed no pupae of this insect, but half- 

 grown and nearly mature larvae were plentiful. The larval period, while not 

 determined, must be of at least a year's duration. Adults were common in June 

 and in September, The cocoons of a hymenopterous par.isite were found in 

 two galleries, but no adults have as yet been secured." 



We have listed in our notes on the National Museum inatcrial a 

 specimen of grandis labelled Plummer's Id.. Md., May, but we feel 

 tliat there must be some error either in our record or in the label. 

 The family is so imperfectly known, however, that the species may 

 occur in the southern states and along the east coast. 



45. OiDAEMATornoRus suBOCiiRACEUs Walsingliam. PI. XPYII, fig. 



8, 9. PI. LIII, fig. 8. 

 Lioptilus subochraceus Walsingham, Ttcr. Cal. Ore. 53, pi. IIL f. 10, 1880. 

 tAlucita siibochracca Fcrnald, Smith's List Lep. N. A. 87, 1891. 

 Ptcrophorus subochraceus Fernald, Pter. N. A. 43, 1898 (in part). 



Id., Bull. 52 U. S. N. M. 445. 



Meyrick, Gen. Ins. C, 16, 1910. 



Id., Wagner's Lep. Cat. pars 17. 24. 1913 (in part). 



Barnes & McDunnough, Check List 151, 1917. 



