50 OrpeEr—COLEOPTERA. Section—PENTAMERA. 
Species 4 (74)—GENUCHUS PERDITUS. 
Puate X, Fia. 2. 
Subdepressus ; capite transverso, clypeo verticali supra angulato-truncato, margine infero paullo prominulo ; 
vertice rugoso-punctato convexo; prothorace magno convexo, lateribus rotundatis; disco cicatricoso-punctato, 
absque canali centrali, tuberculoque parvo in medio prope marginem anticum instructo; elytris brevioribus 
granulato-punctatis, singulo 4-costato, costis parum prominulis levibus; sutura elevata. 
Long. corp. lin. 5; lat. humer. elytr. fere lin. 2. 
Habitat ; ? ; 
This species differs from the preceding in the large size of the prothorax, which is not longitudinally 
channelled down the centre, and in the shorter elytra, the sides of which are not parallel, but are gradually 
narrowed from the base to the extremity. 
Genus 21—LISSOGENIUS. 
(Schaum, Ann. Soc. Ent. France, 1844, p. 420; 1845, p. 53; Chthonobius, Burmeister, Handb. vol. v. p. 567 (1847).) 
Habitus Cremastocheili elongati: clypeus antice obtuse trigonus, acumine emarginato; maxillaruam mando 
brevissimus, apice subobtuso, supra penicillatus, galea cornea, faleata apice unidentata, extus pilosa; mentum 
latum, os claudens, omnino planum Jxevigatum pone medium utrinque impressum pro receptione palporum ; pro- 
thorax longitudine latior, supra depressus, lateribus valde dilatato-rotundatis, angulis posticis rectis parvis ; 
prosternum cum processu ante coxas anticas dependente; metasternum angustum, non porrectum ; tibie antice 
triquetre extus obtuse tridentate, supra crenulate ; tarsi 5-articulati, anticorum articulis brevibus crassis ob- 
conicis ultimo transversim impresso, unguibus minimis; abdomen spiraculis duobus ultimis elevatis, segmentis 
ventralibus secundo tertio et quarto longitudinaliter in maribus parum depressis. 
This genus was founded by Dr. Schaum, on an insect from Guinea, and was considered by him as inter- 
mediate between Scaptobius and Cyclidius. He incorrectly described it as wanting the dependent spine in front 
of the anterior tibie, and, from his specific description of the type, it would appear that the specimen in the Basle 
Museum which he examined was so saturated with grease as to cause the luteous irrorations to disappear. Hence, 
from these two causes, Dr. Burmeister was probably led to infer that the insect, which he described in 1847 under 
the name of Chthonobius conspersus, (with the prosternum spined, and the body covered with whitish tomentosity, 
‘niger, supra opacus, cicatricibus ellipticis dense signatus, interstitiis albido-tomentosis,’) was distinct from 
Dr. Schaum’s Lissogenius. The difference of the locality of the two insects might also lead to their being 
considered as distinct ; but the figure given by Dr. Schaum of the Basle specimen from Guinea proves it to be 
congeneric, if not specifically identical, with the Natal and Caffrarian specimens subsequently received in some 
numbers. 
Species 1 (75)—LISSOGENIUS CONSPERSUS. 
Prate X, Fic. 11. 
Oblongus, niger, subopacus, supra parum conyexus, sordide luteo-variegatus: capite confertissime rugoso- 
punctato; fronte transversim carinata, carina medio emarginata ; prothorace brevi, erebre rude, parum profunde 
punctato, dorso impresso, utrinque elevato, angulis basalibus emarginatis; elytris in dorso planis, cicatricibus 
ellipticis erebre impressis, singulo bicostato. 
Long. corp. 11 mill.; lat. 5 mill. 
Habitat ; Caffraria, Natalia, &c. in tractu fluvii Gariepis. In Mus. Oxon., Holm. &e. 
Syy.: Chthonobius conspersus. Burmeister, Handb. Ent. v. 567; Schaum, Verz. Lam, Melit. p. 64. 
Lissogenius luteo-varius. Boheman, Ins. Caffr. pars ii. p. 55. 
The head is marked with a transverse ridge, running across between the places of insertion of the antenna, 
being interrupted in the middle; the fore margin of the clypeus is also elevated on each side. The maxilla 
have the apex of the mando internally produced into a small obtuse tooth, and the galea is elongated and falciform 
