RET. T. A. MARSHALL — CORYXODIXORUM RECEKSIO. 33 



A single specimen iu tlie l^ev. H. Clai-k's collection. It may 

 prove to be only a variety of the preceding. 



4. C. LAUTISSIMTJS. 



C. elongato-ovatus, thorace subtilissime punctulato, punctis paulo majo- 

 ribus interspersis, raetallico-CDcruleuSj splendidus, abdomiae plus minus 

 violaceo ; elytris stiiato-])unctatis, nitidissimis, aureo-viridibus ; scu- 

 tello casmlco. 



Long. 5A-()J lin.; lat. hum. 2-3 liu. 



Elongate-ovate ; front gibbous, with a faint vertical impression ; eyes 

 rufo-fuscous ; head and thorax finely and irregularly punctured, with 

 still finer and more numerous puuctules between the punctures, dark 

 shining blue, sometimes with a violaceous tinge ; scutellum, and 

 sometimes the suture, blue, the former punctulate. Elytra bright 

 metallic green, with more or less of a golden tinge, densely punctate- 

 striate, the punctures much coarser than those of the thorax ; abdo- 

 men punctured, especially towards, the apex ; legs shining blue, 

 thickly punctulate, apex of the tibias and the tarsi with fulvous hairs. 



Brought by DeyroUe from the Gaboon River. Thomson's collection. 

 Also in the British Museum. 



One of the largest of tlie genus ; very distinct from green 

 examples of G. com^rcssicornis by its superior size and brilliant 

 polish. 



5. C. pusio. 



C. parvulus, elongatus, cupreo-purpureus, thorace supra, capite antice, 

 scutello viridibus, nitidis; antennis nigris; thorace elongato, antice 

 valde angustato, confertim punctato ; elytris punctis majoi'ibusdensis- 

 sime consitis ; capite subexserto, vertice desuper conspicuo. 



Long. 3f lin. ; lat. hum. ^ lin. 



Thorax at the base more than twice as broad as in front ; the sides sub- 

 parallel from the base to rather more than one-half their length, then 

 obliquely rounded to the front ; head subexserted, eyes projecting at 

 each side beyond the thorax; vertex gibbous, visible from above. 

 Antenna; dull black. Labrum, palpi, and mandibles piceous. Front, 

 vertex, and disk of the thorax metallic green, very thickly punctured, 

 almost rugose ; scutellum golden green, brilliant, nearly impunctate. 

 The rest of the insect cupreous, with a purple or violaceous tinge, 

 except the tibiae and tarsi, which are blackish. 



Hab. Shores of Lake Ngami. 



The smallest of the African species, and distinguished from all 

 others by its prominent head and by the shape of the thorax. It 

 is probably the type of a subsection pectiliar to the interior of 

 Africa. 



A single specimen in the Eev. H. Clark's collection. 



LINN. PBOC— S^OOLOGT, VOL. YIIT. 3 



