14 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 82 



The illustration and description of Galleruca sexlineata in 01ivier"'s 

 Entomologie are suggestive of this species, but the habitat given is 

 Bengal. Apparently Chevrolat in the Dejean Catalogue suspected 

 that this species might be a North American Disonycha^ since he lists 

 it with a question mark. He had previously listed it in D'Orbigny's 

 Natural History under Disonycha^ and there is an old specimen of 

 this species in the Bowditch collection that is labeled " 6-lineata 

 Oliv." followed by what appears to be the abbreviation " Ch." 



Dr. W. G. Kuntzen, of Berlin University Zoological Museum, has 

 corroborated my interpretation of the species by comparing speci- 

 mens sent by me with the Illiger type. 



2. DISONYCHA CONJUGATA (Fabricius) 



Plate 1, Figure 2 



Oalleruca conjugata Fabricixts, Systema Eleutheratorum, vol. 1, p. 495, 1801 



(Carolina; Mus. Bosc). 

 Ealtica conjugata Illiger, Mag. fiir Insekt., vol. 6, p. 184, 1807. 

 Altica conjugata Olivier, Entomologie, vol. 6, p. 686, 1808. 

 Disonycha conjugata Chevrolat, Diet. Univ. d'Hist. Nat., vol. 5, p. 81, 1849. — 



Blake, Bull. Brooklyn Ent. Soc, vol. 15, p. 211, 1930. 

 Monomacra costipennis Jacquelin du Val, in Sagra's Hist. Fis. Cuba, vol. 7, 



p. 129, 1857 (Cuba). 

 Disonycha floridana Jacoby, Entomologist, vol. 34, p. 146, 1901 (St. Johns Bluff, 



east Florida; type in British Museum). 

 Disonycha pennsylvanica var. conjugata Horn, Trans. Amer. Ent. Soc, vol. 16, 



p. 203, 1889. 



Description. — Small (5 mm), elongate oblong-oval, not very shin- 

 ing ; elytra in female always markedly costate, less so in male ; pale 

 reddish yellow with paler yellow narrow elytral vittae; antennae, 

 labrum, mesosternum and metasternum, sometimes middle of abdo- 

 men, tibiae and tarsi dark. Head with interocular space more than 

 half width of head ; frontal tubercles well marked, carina somewhat 

 produced; surface smooth and shining except for a circle of coarse 

 punctures about the fovea on each side of head near eye ; labrum dark, 

 occiput darker reddish. Antennae robust and long (for the genus), 

 dark with paler basal joints; third joint shorter than fourth and fifth, 

 which are subequal, the fourth being slightly longer. Prothorax 

 about twice as wide as long, nearly rectangular in shape, with sides 

 only slightly arcuate; not very convex, with slight lateral callosity 

 and median basal depression ; surface smooth and somewhat shining, 

 under high magnification finely alutaceous and nearly impunctate; 

 pale, usually with five indistinct pale reddish spots. Scutellum pale. 

 Elytra narrowly oblong oval, with sides parallel and humeri marked 

 by short intrahumeral sulcus ; in female four or five costae extending 

 from humeri well down toward apex, these costae less distinct or 

 obsolete in male; surface somewhat shining, under high magnifica- 

 tion very finely alutaceous and punctate ; pale yellow with wide pale 



