50 DAVENPORT ACADEMY OF NATURAL SCIENCES. 



Nymph: Compact, reddish -brown, with prominent e\es, stout, short 

 legs, vertex prolonged on either side of the middle third into a flat 

 process, abdomen with a median notched carina ; length, 3 mm. 



Vertex nearh- flat, projecting forward, parallel margined for more 

 than half of its length in front of the eyes, middle third of anterior 

 margin cleft half-way to base, leaving two flat "horns" longest on 

 lateral margins, where the\ equal their width at base, their anterior 

 margins obliquely rounding to the medial cleft, face similar to adulr, 

 upper part of front projected on either side into an elevated rounded 

 lobe which overhangs the base of the long antennae, thoracic shield 

 equalling the abdomen in length, mediall\ carinate, abdomen short 

 and narrow, above compressed into a h)gh keel, each segment being 

 elevated most on the posterior margin, giving it a serrate appearance. 

 Legs stout, more adapted to walking; whole surface roughly and irreg- 

 ularly pitted. 



While at first sight this appears to be a very distinct form it agrees 

 with the Pediopsis larva in the crested abdomen and except for the 

 projections on the vertex bears a striking resemblance to the larva of 

 Tettigonia bifida. 



Life history: Larvae and pupae were collected first October 12 of 

 last year and were determined to be U. canadensis, V. D., and so re- 

 ported in the " Additions to List of Hemiptera of Iowa."* They were 

 again collected from sheltered situations January i, 1897, (a very warm 

 day). Early in May they were again found and placed in breeding 

 cages and soon emerged as Agallia 4-piiitctata females, the males prob- 

 ably having issued before. They are single-brooded, the adults ap- 

 pearing in early spring, the females remaining until into July. The 

 eggs are probably all deposited by the middle of June, from which the 

 larvae appear in July and by fall are nearly or quite full grown, passing 

 the winter and issuing as adults again early the next spring. They 

 have been found on a great variety of plants, mostly pertaining to the 

 compositae, horse-radish, beet, Helianthus, Eupatoriiim, Qic. The larvae 

 remain on or near the ground and conceal themselves in the rubbish 

 and humus for which their color and appearance is peculiarly adapted. 

 They only occur in shaded locations or on such plants as horse- 

 radish, beets, etc., that furnish a deep shade and a moist humus. 

 The adults are usually found on the younger portions of the stems and 

 may be taken in abundance from Eupatoriujn in May. 



*Proc. Iowa Acad. Sci., Vol. IV., p. 231. 



