474 Mr. CuRTis's Descriptions of 



sides of metathorax mouse-coloured : abdomen ochreous-white, margin of 2nd segment 

 and the 3rd and 4th entirely mouse-colour : legs ochreous, 

 A single specimen from Gorrite. 



Never having seen Dejean's characters oi Nacerdes iin<\ Asclera, I am unable 

 to determine with certainty the genus which embraces this species, but it 

 agrees better in habit with A', melanura, Linn., than it does with the Fabrician 

 species A. thoracica and A. sanguinicollis ; and if I mistake not, the large size 

 of the scutellum indicates that it is a Nacerdes, as that organ appears to be 

 minute in Asclera. 



Since the publication of the former part of this paper in 1838, 1 have received 

 some specimens of one of the Cisidre* from Columbia, which have so evidently 

 the habit of onr genus Exops, that I am convinced there is the greatest affinity 

 between that family and the Clerideef. I may also state, that I have found a 

 figure of Exops Bevani in the Supplement to the 16th volume of the 'Nova 

 Acta Acad. Nat. Cur.' pi. 39. f. 4, and named by Eschscholtz Psoa Chilensis, 

 an additional proof of the affinity of our insect with the Cisidce ; at the same 

 time it must be remarked, that the absence of the small basal joint of the tarsi 

 in Psoa, by which it is legitimately tetramerous, and the antennae of 10 joints 

 only, render it impossible to include our Exops with 5-jointed tarsi and 11- 

 jointed antennae in the same genus. 



Finding that the name Odontoscelis (vol. xviii. p. 186) is pre-occupied by a 

 Homopterous genus, it is necessary to substitute another name ; 1 therefore 

 propose to call it Scelodontis. 



London, March 1844. 



* I established this family in 'British Entomology' (folio 402); but unfortunately the limited plan 

 of the work did not allow of my discussing the subject. It was intended to embrace those Bostricida 

 which have a labrum, as Apate (vide fol. and pi. 271 of the same work), Cis, &c., which is wanting in 

 the typical groups of that family; vide Scolytus and Platypus (ibid. fol. and pi. 43 and 51). 



t Vide my remarks upon the Cisidce and Clerida in ' Brit. Ent.' fol. 402, and my arrangement in the 

 • Guide,' genera 321 to 336. 



