﻿22 LE CONTE.— COLEOPTERA OF THE 



Lytta i n s u 1 a t a, nigra, capite thoraceque flavis, parce grosse punctatis, ore guttis pluribus, lateribusque 

 pone oculos nigris, thorace latitudiae longiore, antrorsuni sensiin angustato, gutta utrinque antica in 

 latera, maculaque utrinque postica discoidali obliqua nigris, elytris testaceo-fuscis, opacis, alutaceis 

 punctulatis, vitta basali abbreviata, margine laterali, maculaque subapicali pallide-flavis, ad apicem nigri- 

 cantibus. Long. -77. 

 Mas antennis ad articulo 2ndo geniculatis, palpis niaxillaribus artieulo ultimo magno elliptico, subtus 



concavo, patelliformi. 



One specimen, collected May 10th, by Capt. Pope, on the route to Llano Estacado. 

 This species belongs with L. mylabrina, &c, to my division B — e, (Proc. Acad. 6, 

 331); and the male of the latter species, as I have recently ascertained possesses 

 similar sexual characters, though the dilated last joint of the maxillary palpi is more 

 ovate, and is not so concave beneath. I have not seen males ofL. Germari, and 

 do not know whether they are similarly provided. 



It is also to be noted that in the male of L. mylabrina, the antennas besides 

 being suddenly geniculated between the first and second joints are less slender than 

 in the female. 



Connected closely with L. mylabrina, are two forms to be here noticed; the 

 first was collected by Capt. Pope on the Llano Estacado. It is -45 — -55 long, 

 sculptured, colored and spotted as inL. mylabrina, except that the lateral spots 

 of the thorax are wanting, the two discoidal ones alone being present : the elytra are 

 shining, less densely and more distinctly punctured. Sexual characters as above : first 

 joint of the antennas usually testaceous, or spotted, rarely entirely black. 



The second form is found in Texas and New Mexico, was collected by Mr. Schott, 

 and Capt. Pope. It is - 7 — '9 long, sculptured, colored and spotted, as in L. 

 mylabrina, except that the elytra have only the two basal spots on each, and a 

 large quadrate black blotch behind the middle extending from the suture almost to the 

 margin, and corresponding to the medial transverse band of L. mylabrina; the 

 apical black band is entirely wanting. The first joint of the antennas is testaceous. 

 All these forms vary greatly in the color of the under surface, and seem to present 

 the phenomenon of races, and lead to the conclusion that L. E n g e 1 m an n i Lee, 

 will eventually be ranked with them under L. mylabrina. 



Lytta vittigera, sordide rufa, capite thoraceque nitidis parce punctatis, hoc latitudine longiore, 

 antrorsum sensim angustato, macula utrinque antica in latera, alteraque postica discoidali nigris, elytris 

 dense subtiliter punctulatis, subtiliter 4-lineatis, vitta lata nigra a humero fere ad apicem extensa; 

 subtus nigra suturis rufis, femoribus basin, trochanteribusque testaceis. Long. -82. 



Near the boundary of Texas. Dr. Berlandiere ; two females. Belongs to the same 

 group as L. mylabrina, and probably varies equally in the size of the black spots 

 of the under surface. One specimen, besides the black stripe of the elytra, has a black 

 spot near the scutellum, but in the other it is hardly visible. It is nearly related to 

 L. discoidea Zee, but is very much larger, and has the elytra much more densely 



