488 HEMIPTERA. 



Genus 2. ACESTRA, n. g. 



Head elongated, pointed in front, with the central lobe pro- 

 jecting beyond the apex of the lateral lobes in the form of along, 

 pointed process ; lateral margins, from the antenniferous tubercles 

 to the base of the head, nearly parallel. Eyes small, not promi- 

 nent; ocelli small, approximated, placed close to the anterior 

 margin of the prothorax. Antennae long, four-jointed; basal 

 joint nearly as long as the head and thorax together, stout, 

 thickened towards the apex ; second joint about as long as the 

 first, slender, slightly thickened towards the base, thinner than 

 the first; first and second joints clothed with long soft hairs; 

 third joint about half as long as the second, thinner, clothed with 

 very fine soft hairs; last joint wanting. Rostrum long and 

 slender, reaching the middle of the metasternum, inserted on a 

 level with the apices of the lateral lobes of the head ; four-jointed ; 

 basal joint not reaching the base of the head, second joint long- 

 est, third shortest, fourth nearly as long as the first. The other 

 characters as in Chorosoma. 



1. ACESTRA sinica, n. s. PI. XIV. fig. 4. 



A. luteo-testacea, supra punctatissima ; ventris linea media tenui 

 longitudinali, rostroque apice, nigricantibus. <? . 

 Long. lin. 7i- 



Yellowish testaceous. Head and thorax very thickly and mi- 

 nutely punctured ; produced portion of the central lobe of the 

 head clothed with long soft whitish hairs ; vertex with a short 

 longitudinal impressed line in front of the eyes, and a small pit 

 before the ocelli. Coriaceous portion of the elytra with lines of 

 fine punctures along the course of the nervures; membrane 

 semitransparent. Breast thickly and finely punctured. Abdo- 

 men with a slender blackish line down the centre ; smooth, with 

 three approximated brownish punctures on each side of the black 

 central line at the base of the second and third segments, and 

 three similar punctures on each side of the fourth and fifth seg- 

 ments within the apical angles. Rostrum with the apex black. 

 a. China. Presented by G. T. Lay, Esq. 



Genus 3. NEIDES. 



Cimex, p., Linn. Syst. Nat. i. (1767); Schr. F. B. ii. (1801). 

 Gerris, p., Fab. Ent. Syst. iv. (1794) ; Fall. Mon. dm. (1807). 

 Neides, Lat. Hist. Nat. iii. 246 (1802) & xii. (1804) # Gen. iii. 



120 (1807) ; Olw. Enc. MetJi. viii. 163 (1811) ; Curt. B. E. iv. 



150 (1827); Spin. Hem. 203 (1837) $ Tav. Sin. Hem. 42 (1850). 

 Berytus, p., Fab. Syst. Rh. 264 (1803); Schitt. Beitr. i. 55 (1829) ; 



