228 Psyche [October-December 



segments covered clorsally by a somewhat chitinous plate, tip 

 and sides sparsely clothed with short hairs. Legs chunky. 

 Sheath of rostrmn extending to between first and second pairs 

 of legs. 



Fifth Nymphal Stage. Length about 2.5 mm. Width of head 

 across eyes, 0.6 mm. Color pale or dirty yellowish tinged with 

 brown. Tips of antennae, tips of legs and edges of wing pads 

 somewhat brownish. Ventral surface pale. Head and thorax 

 subequal in width. Eyes, lateral, prominent, red. Head and almost 

 all of dorsal surface of first thoracic segment except for a broad, 

 median line on head and thorax covered by a light brownish 

 chitinous area. Prothorax two-thirds as long as mesothorax. 

 Metathorax slightly less than one-half as long as prothorax. 

 Wing pads of mesothorax extending to beginning of first ab- 

 dominal segment. Wing pads of metathorax extending almost 

 to end of second abdominal segment. Dorsal surface of meso- 

 thorax bearing a small, brown area and a dot on the anterior 

 margin each side of a median line; on posterior margin a large 

 brown area and three closely placed darker spots or dots on 

 each side of median line. Metathorax bears dorsal areas and 

 spots similar to those of mesothorax. Anterior edge of first 

 abdominal segment bears areas and spots similar to those on 

 anterior edge of metathorax. Abdomen subcircular, strongly 

 convex. First segment narrowed, gradually widening to fourth 

 and then narrowing to broadly rounded extremity. First six 

 abdominal segments distinct, remainder fused and covered with 

 a darker, dorsal, chitinous plate; a tubercular, process on each 

 side of anal opening. Sides and tip of abdomen bearing short 

 hairs Dorsal surface of abdomen has a velvety appearance. 

 Antennse, head, wing pads and legs bearing several short hairs. 

 Adult. This was described by Fitch in 1857 (Ann. Rept. N. Y. 

 State Agric. Soc. XVII, p. 740) from specimens collected during 

 the middle of May in extensive tracts of sweet flag {Acorus 

 Calamus) growing on the banks of the Raritan River two miles 

 below New Brunswick, N. J. His description follows. 



"Spotted winged Diraphia, Diraphia maculipennis N. sp. 



