242 PROCEEDINGS OF THE ACADEMY OF [PaRT II 



We agree with Brunner in eo'nsidering Saussure 's P. glaiwa, des- 

 cribed from Brazil, a synonym of this species. 



Of the green and plainly colored species of this genus, prasina 

 attains the largest size, apparently usually exceeding even the larg- 

 est individuals of P. exoleta Burmeister. The measurements for 

 the present specimen are: length of body 25, interocular width .7, 

 length of pronotum 7.7, width of pronotum 9.5, length of tegmen 

 27.2, width of tegmen 9.2 mm. 



Tribonium conspersum (Guerin and Percheron) Plate XII, figure 7. 



1835. B[latia] conspersa Guerin and Percheron, Gen. Ins., 2e Livr., No. 3, 

 pi. 2. [Brazil.] 



Tijuca, Rio de Janeiro, Brazil, 19,7 juv. cf , 3 juv. 9 . 

 This species has been synonymized under T. spectrum (Eschscholtz) . 

 We find that the tegmina and wings scarcely surpass the apex of 

 the abdomen in the female here recorded, as so splendidly figured 

 by Guerin and Percheron, and described by Serville.'^'^ In addition, 

 the reflexed proximal portion of the tegminal marginal field is dis- 

 tinctly lower than wide, with a w^eak emargination of the costal mar- 

 gin at its base. As a result, the name conspersum is restored. This 

 condition may be found to represent a geographic race of spectrum, 

 but at present insufficient material is at hand to determine whether 

 or not that is true. 



The measurements of the present female are; length of body 22.1, 

 length of pronotum 4.9, width of pronotum 9.1, length of tegmen 20, 

 width of tegmen 7.6 mm. 



Four instars of the handsome and very differently marked im- 

 mature condition (shown by the figure here given) are represented. 



Tribonidium signaticollis (Bmmeister) Plate XII, flgiue S. 



1838. Z[etobora] signaticollis Burmeister, Handb. Ent , II, x\bth. II, Pt. I, 

 p. 510. [Brazil.] 



Curityba, Parana, Brazil, 1 cf , [Hebard Cln.]. 



At first glance, this specimen would appear to be solidly blackish 

 chestnut-brown in general coloration, except for the transparent 

 portion of the pronotum cephalad, which is tinged with warm buff. 

 On closer examination, however, the pronotum is seen to have 

 patches of very slightly paler color mesad and latero-caudad, show- 

 ing a rich deep mahogany red tinge, the marginal and anal fields 

 of the tegmina very faintly tinged with this color. 



^^ Recorded by that author and later by Guerin, from Cuba, almost certainly 

 in error. The material recorded as this species by Burmeister, Saussure and 

 Brunner represents instead the closely related spectrum. 



