20 Psyche [February 



II on abdominal segments III, IV, V and VI prominent, black. Beneath green with 

 a pair of small black warts on the rear of abdominal segments. Length 16 mm. 

 Stage IV. 



Head yellowish marbled with bro^^n. Body green or yellow-green, in some cases 

 much marbled with brown; lateral purple stripe prominent only on anteriorand pos- 

 terior segments where it is marbled with white; black lateral dots as before; black 

 dorsal tubercles also present, especially prominent on abdominal segment III, 

 where they form more or less raised warts; claspers striped with purplish, being the 

 continuation of the lateral stripe. Two small black tubercles on posterior margin 

 of segments underneath. Length 25 mm. 

 Stage V. 



Very variable in ground color and markings. The majority have pale green head, 

 marbled with brown; body olive green with no traces of stripes; mesothorax swollen, 

 with reddish-purple lateral wart, shaded inferiorly with lighter, this color being 

 continued forward to the head. Third abdominal segment with two prominent 

 dorsal red-brown warts, more or less confluent, and two lateral ones, all situated 

 on posterior portion of segment; similar dorsal warts on 6th abdominal. Rear seg- 

 ments shaded with purple browTi; lateral dots of previous stages almost or wholly 

 lacking; tubercle II of abdominal segments also much less marked with black. 

 Beneath green with two reddish warts in medio-ventral region of 2d abdominal 

 segment. 



Other larvje are generally much browner in appearance, due to geminate dorsal, 

 subdorsal and lateral lines filled in with brown, but much broken and irregular. 

 Beneath markings of dorsal surface repeated; all tubercles and warts more promi- 

 nently marked than in the green form of larva; tubercles frequently a rise from a small 

 white patch, being themselves black; tubercle II of 4th and 5th abdominal segments 

 often reddish, more or less prominent. Length full grown 37 mm. 



Pupa. Light brown, strongly marked with olivaceous and darker shades of brown ; 

 antennae and leg sheaths darker; wing cases with numerous small grooves, giving 

 a general sponge-like appearance. Spiracles dark brown; segmental incisions 

 banded with dark brown; cremaster with two strong hooks. 



Food plant. Quercus. 



The species is double-brooded, the first specimen emerging 52 

 days from date of oviposition. 



A NEW SPECIES OF PSELLIOPUS (MILYAS). 



By Wm. T. Davis, 

 Staten Island, New York. 



While in quest of insects in the country to the west of Beltsville, 

 Prince George Co., Maryland, on September 26, 1911, with Mr. 

 Frederick Knab and Mr. Clarence R. Shoemaker, I observed that 



