HEMIPTERA. 191 



1. MUSTHA serrata. 



Lygseus serratus, Fab. E. S. iv. 134. 2 (1794) $ S. R. 203. 2 

 (1803). 



The specimen of this insect in the Museum Collection, which 

 is the actual type from which the Fabrician description was 

 drawn, has the legs of some large Coleopterous insect substituted 

 for its own, and the four first joints of the antennae of apparently 

 the same insect attached to each side of its head. It differs from 

 the following species in having the denticulations of the margins 

 of the abdomen much larger, more regular, and less numerous, 

 the head not tapering towards the apex, but with the sides nearly 

 parallel, and the under side of the abdomen, except the margins, 

 red. Fabricius gives America as the habitat of the species, but 

 this is probably incorrect. 



2. MUSTHA spinosula. 



Halys spinosula, Lefebv. Mag. Guer. pi. 21 (1831); H. Schdff. 



Wanz. iv. 99. t. 142. fig. 446 (1839) & vii. 56. t. 233. fig. B 



(1844); Kolen. Mel. Ent. iv. 42. 167 (1846). 

 Apodiphus spinosulus, Spin. Hem. 295 (1837). 

 Mustha serrata, Am. $ Serv. Hem. 106. 1 (1843). 

 Stoll, Pun. 95. pi. 24. fig. 169? 



I a. Egypt. From Mr. Children's Collection. 

 Genus 35. CCENOMORPHA, n. g. 

 Head slightly elongated, rounded or slightly pointed in front, 

 with the central lobe as long or longer than the lateral. Antennae 

 about half the length of the body, five-jointed, slender, inserted 

 rather behind the middle of the lateral margin of the head ; basal 

 joint shortest and stoutest, not passing the apex of the head ; 

 second, third and fifth joints nearly equal, third perhaps a little the 

 longest ; fourth joint a little longer than the third. Rostrum 

 slender, passing the second segment of the abdomen, inserted 

 about on a level with the base of the antennae ; first joint not 

 passing the base of the head; second and third joints about 

 equal, longer than the first; fourth about equal to the first. 

 Body ovate, depressed. Thorax hexagonal, transverse, with the 

 lateral angles rounded, the lateral margins denticulated. Scu- 

 tellum triangular, passing the centre of the abdomen. Coriaceous 

 portion of the elytra longer than the membrane, with its apical 

 margin oblique, slightly sinuated; membrane with longitudinal 

 nervures. Margins of the abdomen unarmed. Ventral furrow 

 distinct, reaching the posterior margin of the fourth or fifth seg- 

 ment. Legs moderate ; tarsi with the basal joint as long as the 

 two others together. 



