188 Mr. W. S. Dallas's Notice 



thoracis unidentatis ; linea transversa thoracis, scutelli apice, 



tnarginibusque elytrorum, albidis, $ . 

 Long. lin. 7. 



Body elongate-ovate, the sides nearly parallel. Olive-brown, 

 or brownish-testaceous, very thickly punctured. Thorax with 

 the lateral angles produced into a short, acute, black spine, which 

 is distinctly toothed on its hinder margin ; a pale yellowish line 

 runs across the disc of the thorax from angle to angle. Scu- 

 tellum rather dark at the base, the apex white.* Elytra with the 

 external margin whitish ; the membrane transparent. Abdomen 

 beneath punctured, with an irregular line down the centre, and 

 the stigmata, black. Legs, rostrum and antennae yellowish brown; 

 the tip of the third joint of the antennae, and the whole of the 

 fourth, except the base, black. Tarsi pitchy. 



Of the Cydiiides there is only one small species, which appears 

 to agree very nearly with Hope's description of his Cydnus 

 Cajncola. 



Amongst the Halydes we have only four species, of which one 

 is the Halys {Dalpada, A. and S.) oculata, Fab. ; the second ap- 

 proaches very closely to Halys obscura, Hope ; the third appears 

 to be undescribed. This species will not enter any of MM. 

 Amyot and Serville's sufficiently numerous genera. According 

 to their systematic table, it should fall in their genus Thelima ; 

 but it does not at all agree with the characters given of that genus 

 in the body of the work. It appears to xne to enter, or to ap- 

 proach very closely to, the genus Dichelops of the Marquis Spi- 

 nola, and under this it will be best to range it. The rostrum 

 barely reaches the second segment of the abdomen. The lateral 

 lobes of the head (fig. 3 a) pass the central one considerably, and 

 meet beyond it, but leave a good-sized notch at the apex of the 

 head. The lateral margins of the head are notched a little behind 

 the apex, and again a little before the eyes. The ventral furrow 

 is scarcely perceptible. I call the species — 



Sp. 3. Halys {Dichelops?) obscura. (Plate XIX. fig. 3.) 



H. (D.) ovata, fusca, punclatissima, antennis rufo-fuscis, arti- 



culis 2 ultimis, basi excepto, nigris, $, $. 

 Long. lin. 7 — 7^. 



Body ovate. Above brown, obscure, very thickly punctured. 

 Thorax with the lateral angles somewhat prominent, margins pale 



• This character is not given by Burmeister. 



