ABT. 28 REVISION OF DISONYCHA NORTH OF MEXICO — BLAKE 49 



punctate surface, and pale coloring. The pronotal spots are usually 

 entirely lacking. It is possibly the species illustrated in Olivier's 

 Entomologie under caroliniana^ and is therefore confused in some 

 collections with caroUniana, a somewhat larger species. 



Mr. Blatchley has kindly sent me the type of this species for 

 examination. His specimen has preserved the fresh coloring of the 

 live beetle very well, and the red and silvery colors of the elytra 

 are still apparent, although in the majority of the dried specimens 

 this coloring has faded to uniform pale yellow or brownish yellow. 

 In his description the head is said to be impunctate, and this is true 

 for his specimen except for the fovea, which consists of a circle of 

 coarse punctures united to form a depression on each side of the head 

 near the eye. Other specimens, however, frequently have scattered 

 punctures on each side of the head, and the frontal tubercles are 

 often darker brown than the rest of the head. 



22. DISONYCHA GLABRATA (Fabricius) 

 Plate 6, Figure 32 



€riocx:ris tomcntosa Fabkicitjs, Systema eutomologiae, p. 122, 1775 (not Chry- 



somela tomentosa Linnaeus, 1758). 

 Vrioceris glabrata Fabkicius, Species insectoruin, vol. 1, p. 156, 1781 (In Africa 



aequinoctiali). 

 Vhrysotnela glabrata Fabricius, Mantissa insectorum, vol. 1, p. 76, 1787. 

 Altica vittata Olivier, Encyclop4die m^thoclique, vol. 4 (vol. 1, Insects), p. 105. 



1789. 

 (lalleruca glabrata Fabricius, Entomologia systematica, vol. 1, pt. 2, p. 25, 



1792 ; Syst. Eleuth., vol. 1, p. 494, 1801. 

 Altica glabrata Olivier, Entomologie, vol. 6, p. 685, 1808. 

 Altica alteniata Latreille, in Voy. Humboldt, Zool., vol. 2, p. 39, 1833 (not 



Haltica alteniata lUiger). 

 Disonycha glabrata Chevrolat, in Dejean Catalogue, p. 414, 1837.— Crotch, 



Proc. Acad. Nat. Sci. Philadelphia, vol. 25, p. 64, 1873.— Harold, Coleoptero- 



logische Hefte, vol. 15, p. 4, 1876.— Jacoby, Biol. Centr. Amer., vol. 6, pt. 1, 



p. 311, 1884. — Horn, Trans. Amer. Ent. Soc, vol. 16, p. 207, 1889. 

 Disonycha horticola Chevrolat, in Dejean Catalogue, p. 414, 1837 (Mexico). 

 Disonycha albicoUis Sturm, Catalogue, p. 283, 1843 (Amer. bor.). 



Descn'ptio7i.— Elongate oblong oval, polished, pale yellow with 

 darkened occiput, median pronotal spot, this sometimes lacking or 

 occasionally three pronotal spots, and broad black sutural, median, 

 and marginal elytral vittae ; undersurf ace pale, sometimes darkened 

 in middle of metasternum and abdomen. Head with interocular 

 space about half width of head ; smooth with a few punctures about 

 fovea on each side near eye; frontal tubercles well marked, carina 

 narrowly produced; pale with occiput and sometimes tubercles and 

 labrum dark. Antennae dark with pale basal joints, third joint 

 much shorter than fourth and fifth, which are subequal, the fourUi 

 the longer. Prothorax approximately twice as broad as long, con- 



