54 THE CANADIAN ENTOMOLOGIST 



the names to the larval forms. We thus have a lupine-feeder {vetusta) with 

 whitish tufts tipped with chestnut, producing a small cf with indistinct macula- 

 tion of primaries and an oak feeder {giilosa) with white tufts occasionally black- 

 tipped, emerging into a larger c?' with distinct maculation. A similar arrange- 

 ment was followed by Neumoegen & Dyar in their Preliminary Revision of N. 

 Am. Bombyces (1894, Jour. N. Y. Ent. Soc. II, 28, 29;) later, however, in the 

 List of N. Am. Lepidoptera (1902) Dr. Dyar treats gulosa as a variety of vetusta; 

 the reason for this change is unknown to me but the arrangement was followed 

 in the Barnes «& McDunnough Check List (1917) for lack for any further data 

 on the subject. 



As neither the larva of vetusta nor of gulosa has been bred by me it is im- 

 possible to comment on the accuracy of the above statements; on the face of it, 

 taking into consideration the larval distinctions and the difference in food-plants, 

 I should incline to the belief that we are dealing with two distinct species; as to 

 whether Hy. Edwards or Dr. Dyar is correct in the description of the resulting 

 imagines remains for our California collectors to prove by careful breeding. 



To return to our douglas fir-feeder I would point out that it cannot be re- 

 ferred to gulosa as the larva contradicts the description. In all the specimens 

 reared (both cf and 9 ) the dorsal tufts on abdominal segments I-IV were whitish, 

 broadly tipped with chestnut-brown whilst the dorsal hair-pencil of segment 

 VIII was black with a chestnut-brown tuft of half its length at the base anteriorly. 

 The larva would thus correspond very closely with that of vetusta, according 

 to the description, except that the hair-pencil of segment VIII could hardly be 

 called "yellow tufted with black." 



These discrepancies in the coloration of the larva and the fact that it is a 

 coniferous feeder lead me to the belief that the species is undescribed ; a parallel 

 case is found in the closely allied genus Olene Hbn. where the pine-feeders are now 

 recognized as distinct species from those feeding on deciduous trees. 

 Hemerocampa pseudotsugata, sp. nov. 



Ovum. — Laid in large clusters on the 9 cocoon or adjacent areas, covered 

 with a gelatinous substance to which are attached numerous dark, smoky hairs 

 from 9 abdomen; color white; hemispherical. 



Larva, Stage I.— Resembles considerably a small Porthetria dispar in shape. 

 Head large, brown, with sparse hairs ; palpi and clypeus whitish. Body dirty gray, 

 tinged with reddish laterally, tubercles represented by large chitinous patches 

 (verrucae) containing long, slightly barbed hairs; the dorsal hairs are generally 

 blackisk, the lateral ones white. The usual Liparid wart laterally on the prothorax 

 is very prominent with numerous long, black, hairs. Prothoracic plate large, 

 rectangular, with two knob-like warts on the anterior edge, each bearing about 

 10-12 hairs arranged in a circle; several white hairs from the anterior margins 

 of the segment overhang the head ; posterior and ventrad to the plate are two 

 minute setae closely approximated. Meso- and meta-thoracic segments with 

 tubercles I and II narrowly separated; I small, obliquely oval with three short 

 setae, II larger, roughly circular with about two hairs; in the lateral region are 

 two further tubercles, very similar in size and equidistant. 



On abdominal segments I-IV, VII and VIII verrucae I and II form together 

 a large rectangle, I, narrowly separated from II, being triangular and forming 

 the anterior dorsal corner of this rectangle; on segment II it bears five hairs, on 



