360 Mr. W. S. Dallas on a new Hemipterous Insect 



and limbs of some large Stick-insects as though walking upon 

 them. 



I am, &c., 



W. S. Dallas. 



I AM indebted to Mr. Samuel Stevens for the opportunity of 

 describing this insect. It belongs to the family Phyllocephalidse, 

 in which it will necessitate the formation of a new generic group. 

 It is remarkable from its presenting so close a resemblance to 

 the larvse of the larger species of the group to which it belongs, 

 that at the first glance it may readily be mistaken for one of 

 them ; but the presence of ocelli, of three joints in the tarsi, and 

 of a distinct scutellum, demonstrate that it has arrived at its 

 complete development. A small insect belonging to the family 

 Sciocoridse, described by me (Brit. Mus. Cat. Hemip. p. 145) 

 under the name of Aeptus singularis, presents a very similar 

 conformation ; in this case, however, the ocelli are also wanting. 

 The specimen is unfortunately mutilated in its antennse, the 

 first and second joints only remaining ; from the form of these 

 it is probable that the antennse are four-jointed, although this of 

 course can be only a matter of conjecture. 



Genus Atelides, n. g. PI. V. A. 



Corpus subovatum, postice latins. Caput foliaceum, spina 

 utrinque ante oculos armatum ; lobis lateralibus intermedium 

 longe superantibus, contiguis, apice hiantibus, Oculi promi- 

 nentes. Antennae crassse, articulo primo brevi, secundo elongato, 

 compresso, sulcato ; reliquis carentibus. Rostrum ad basin pe- 

 dum intermediorum attingens, articulo secundo longissimo. Scu- 

 tellum et elytra abbreviata. Sternum canaliculatum. 



Body somewhat ovate, broadest behind the middle. Head (2) 

 foliaceous ; lateral lobes reflexed at the sides, much longer than 

 the central lobe, with their inner margins contiguous throughout 

 nearly their whole length, gaping slightly at the apex ; central 

 lobe very small ; lateral margins with a strong spine in front of 

 the eyes. Eyes very prominent; ocelli small, placed close to the 

 base of the head, and about equally distant from one another 

 and from the eyes. Antenna very stout ; basal joint short, not 

 passing the apex of the head ; second joint very long, compressed, 

 and with a deep longitudinal furrow on each side. Rostrum (3) 

 rather slender, reaching the intermediate coxae, inserted about the 

 middle of the under surface of the head, between two somewhat 

 triangular lamellae; basal joint rather stout, passing the anterior 

 margin of the presternum ; second joint longest, thinner than 

 the first ; third joint shorter than the first, about equal to it in 

 thickness ; fourth joint shortest and thinnest. Pronotum sub- 



