138 GEO. H. HORN, M. D. 



DIANdlOMENA, Chaud. 

 The species comprised in this group are distinguished from the true 

 Lebiae by the mentum being without tooth and from Aphelogenia 

 by the very evident constriction of the head behind the eyes with a 

 greater convexity of the vertex. 



In our fauna we have three : 

 Thorax narrowly margined. 



Head and elytra green, thorax rufous abdominalis. 



Thorax widely margined. 



Head rugose at sides; elytra shining, moderately striate scapularis. 



Head entirely rugoso-punctate; elytra less shining, deeply striate. 



miranda. 



». abdominalis. Chaud. Bull. Mosc. 1843, p. 104; idem. 1871, i., p. 47. 



To the characters already given it may be added : antennae black, 

 three basal joints piceo-testaceous, paler at their bases. Body beneath 

 pale rufo-testaceous, meso- and metasternum and epipleurae nearly 

 black. Legs pale rufous, tarsi piceous. Length .20 inch; 5 mm. 



Occurs in Georgia, Texas and Missouri. 



D. scapularis, Dej. Spec, v., p. 377; Chaud. Bull. Mosc. 1871, i., p. 52 ; 

 Lebia solea Hentz, Trans. Am. Fhil. Soc. iii., p. 255; conjungens Lee. Ann. Lye. 

 iv., p. 194. — Pale yellowish testaceous. Head.irregularly striolate at the sides, 

 vertex nearly smooth. Antennae piceous, basal three joints testaceous. Elytra 

 moderately striate, shining, testaceous with three black stripes on both to- 

 gether, as follows : a lateral stripe from the humerus four-fifths to the tip, 

 becoming gradually broader and rounded at its apical end, this stripe does not, 

 however, attain the extreme lateral margin ; a common median stripe broad at 

 base, somewhat narrowed at middle gradually broader behind and rounded at 

 tip, but uot larger than the lateral stripes. Sometimes the stripes become con- 

 fluent at their apices and the yellow intervening spaces reduced to a very nar- 

 row and short stripe, in which case the elytra resemble those of analis. 

 Length .18— .24 inch ; 4.5—6 mm. 



The variety known as conjungens, Lee, should be referred to this 

 species and not to vittata. It has all the characters of this group. 

 Chaudoir (Bull. Mosc. 1871, i., p. 41) suspected that it might be a 

 variety of vittata to which a head of scapularis had been inadvert- 

 ently attached and he requests a verification of his suspicion. It is 

 that variety of scapularis in which the black stripes become confluent 

 at their apices. 



Occurs in the Middle States, Kansas, Dacota and the Indian Ter- 

 ritory. 



