ZYGOGEAMMA. 217 



confluent with the very irregularly shaped sutural band ; another somewhat curved and 

 elongate broad spot is placed at the shoulder ; below this latter several broad spots, 

 placed transversely, and often confluent in an irregular way, extend to the suture, the 

 outer one being generally connected with a short elongate streak near the lateral 

 margin ; near the apex, or rather at the posterior portion of the elytra, two to eight 

 spots are to be seen, of such variable outlines that it is impossible to fix their shape, 

 and differing in every specimen ; the interspaces between them are very narrow in all 

 of them, producing the effect of waved golden lines. The species seems to be 

 confined to Mexico only. 



21. Zygogramma clathrata. (Tab. xn. figg. 18, 19.) 



Calligrapha clathrata, Sturm, Catal. 1843, p. 288. 



Obscure piceous below; elytra testaceous, the suture, a longitudinal broad band irregularly sinuate at the 

 sides, from the base to the apex, and several small spots at each side of the band black ; lateral margins 

 unspotted. 



Var. The lateral margin of the thorax testaceous. 



Length 2|-3| lines. 



Head finely punctured ; labrum, palpi, and the base of the antennae obscure fulvous, the terminal joints of the 

 latter transverse, gradually thickened, not longer than broad. Thorax transverse, the sides somewhat 

 thickened, straight at the base, but gradually rounded near the apex; surface finely, sides strongly 

 punctured. Elytra parallel, irregularly punctured on the disk, with two rows of punctures near the suture, 

 the latter piceous or black, the sides irregularly dentate or sinuate, but widened near the base and apex ; 

 the disk of each elytron is occupied by a broad longitudinal band from base to apex, generally narrowed 

 towards the middle and very irregularly sinuate at each side ; between this band and the lateral margin 

 several small spots are placed, the former itself being, however, unspotted, but having a row of piceous 

 punctures running parallel to it ; elytral epipleurse piceous. 



Hob. Mexico, Oaxaca {Hoge, SalU). 



A single specimen in M. Salle's collection, and formerly in Sturm's, bears the 

 latter author's label " Calligrapha clathrata," which specific name I have adopted. 

 The specimen labelled by Sturm differs from those obtained by Herr Hoge in having 

 numerous small spots placed between the band of the elytra and their sutural and 

 lateral margins ; but specimens of intermediate degrees, with but very few spots, are 

 before me from Oaxaca, showing the species, like most others of the genus, to vary 

 greatly in its elytral design ; there is, however, always a narrow space visible of the 

 ground-colour between the band and the suture, although in one specimen the latter is 

 connected with this band in several places. The species bears some resemblance to 

 Z. opifera, but may be at once distinguished by the want of the piceous stripe at the 

 extreme lateral margin ; the latter in the present species is accompanied, however, by 

 a row of punctures more or less distinctly piceous. The specimen from the collection 

 of Sturm is figured, as well as a variety from Oaxaca. 



22. Zygogramma stali. (Tab. xil. fig. 4.) 



Zygogramma lata, Sturm, Cat. 1843, p. 288. 



Dark aeneous or purplish ; palpi and three basal joints of the antennae fulvous ; thorax finely punctured, the 



biol. CENTE.-AMEE., Coleopt., Vol. VI. Pt. 1, October 1882. 2f 



