38 MONOGRAPH OF THE 
second specimen, which has been recently added to the fine collec- 
tion of the Rev. F. W. Hope, who, with his usual liberality, 
allowed me to dissect it for the purpose of illustration in this work. 
Genus PENTAPLATARTHRUS, Wesiw. (Plate 58, Fig. 2.) 
(Trans. Linn. Soe., Vol. 16.) 
Corpus subdepressum capite parvo prothorace majori elytrisque latioribus oblongo-quadratis. 
Caput thorace angustius depressum, subquadratum angulis posticis pone oculos subacute 
prominulis ; postice collo brevi instructum: oculi mediocres laterales ovales. Antenne 
ad angulos anticos verticis inserte, capite cum prothorace paullo longiores, quasi 6-arti- 
culate, articulo lmo cylindrico brevi, postice subemarginato, tune articulus? parvus 
subglobosus in apicem prioris insertus, cui insidet articulus 2dus verus brevis transversus 
subpunctatus, Imo fere duplo latior planus, apice truncato ; articuli 3, 4, et 5 longitudine 
Imi at illo triplo latiores, plani transversi, articulus ultimus planus, paullo major apice 
circulari margineque externo vel postico in angulum parvum producto (fig. 2 f antenna 
latere visa). Os inferum (fig. 2d). Labrum (fig. 2 f) parvum crustaceum subtriangu- 
lare margine antico rotundato basi utrinque oblique truncato. Mandibulee (fig. 2 6) parve 
cornee elongate curvate lobo basali externo, apice acute et externe angulum formantes. 
Maxillx, labium, et palpi ex cavitatis oralis margine infero et transverso parallelo pro- 
deuntia. Palpi elongati, labialibus clavatis maxillares longitudine equantibus, his graci- 
lioribus. Maxille (fig. 2.¢) parve lobo apicali magno inermi apice subhirto. Palpi 
maxillares longi cylindrici articulis 2 et 4 longioribus, hoc cylindrico-conico. Mentum 
(fig. 2 d) transversum rigidum angulis anticis paullo productis. Labium internum men- 
toque longius et angustius subtriangulare apice transverso. Palpi labiales in scapos duos 
corneos inter mentum et labium inserti, articulis tribus, 1mo brevi, 2do illo duplo lon- 
giori, 3tio magno clavato apice oblique subtruncato. Prothorax subquadratus et sub- 
cylindricus antice latior angulis porrectis. Scutellum parvum triangulare pedunculo 
abdominis immersum. Metasternum (fig.2¢) magnum transversum medio linea longi- 
tudinali lineaque transversa subapicali impressum. Elytra oblongo-quadrata levia, dorso 
plana, ad latera deflexa immarginata, postice truncata angulisque tuberculatis. Ale 2. 
(Abdomen in specimine nostro mutilatum). Pedes omnes similes breves valde compressi 
lati. Tibize omnes spina minutissima terminali interné instructi(fig.2g). Tarsi breves 
subcylindrici, articulis 5 integris articulo lmo brevissimo, tribus proximis brevibus 
zqualibus subtus paullo setosis, articulo ultimo longitudine quatuor precedentium, 
eylindrico apice paullo crassiori, unguibus 2bus validiusculis acutis simplicibus. 
In general appearance, and in the formation of the prothorax, 
this genus resembles the species of the first section of Paussus; 
whilst the formation of the antennze leads towards Cerapterus, with 
some of the species of which it also agrees in the incrassation of the 
labial palpi. Between the anterior part of the eyes there are two 
slightly raised tubercles, the centres of which appear excavated for 
the reception of a circular ball, probably capable of a rotary 
motion, upon the upper or exposed surface of which the lower part 
of the basal joint of the antenne is inserted. 
Species unica. PENTAPLATARTHRUS PAUSSOIDES. (Plate 58, fig. 2.) 
P. totus rufo-piceus, thoracis angulis anticis utrinque in spinam obtusam productis et in medio 
antice subcucullato (fig. 2 a) dorsoque in medio profunde excavyato. 
Long. corp. lin. 33. Lat. corp. ad bas. elytr. lin. 14. 
Habitat in Africa Australi. In Mus. Hope and nostr. 
Caput punctatum piceum, vertice paullo excavato. Antenne rufo-picex articulo lmo punctato, 
apicilibus levissimis. Thorax levis nitidus, rufo-piceus, angulis anticis utrinque in 
spinam brevyem obtusam productis, antice subcucullatus, disco in medio profunde excavato, 
inde carina longitudinalis ad medium marginis postici et utrinque linea elevata cum 
margine laterali parallela. Elytra rufo-picea nitida tenuissime punctata, punctis in lineas 
perpaucas versus suturam dispositis. 
