Famity—PAUSSIDA. 81 
Grnus—HYLOTORUS. Dalman. 
(Analecta Entom. p. 103 ; Westw. Trans. Linn. Soc. xvi. p. 654; Arc. Ent. ii. p. 40.) 
Seecres 1 (19)—HYLOTORUS BUCEPHALUS. 
(Gyllenhal, Schénherr, Syn. Ins. i. 3, App. p. 15, pl. VI, figs. 2 and 2a; Westw. Are. Ent. pl. LVIL, fig. 4.) 
Puiate XVII, Fic. 2. 
Pallide testaceus, glaber; capite magno rotundato; antennarum clava compressa, ovato-lanceolata, acuta, 
in fovea ante-oculari reponenda, oculis parvis nigris, fronte lmea impressa, postice bifida, ramulis in tubercula 
duo verticalia mamillata desinentibus ; prothorace brevi transverso antice multo latiori, capite quali, basi apiceque 
truncato, supra inzequali, paullo pone medium striga angulata valde profunda et antice posticeque aliis obsoleti- 
oribus transversim impresso ; pedibus brevibus validis, femoribus tibiisque valde compressis, his ad apicem recte 
truncatis. 
Long. corp. lin. 2}. 
Habitat ; Sierra Leone, Africa (Afzelius). In Mus. Reg. Holm. (Coll. Schénherri). 
The outline of the front of the body of this curious insect was made by myself from the original type of 
the species in the Museum at Stockholm. 
Species 2 (20)—HYLOTORUS HOTTENTOTTUS. 
Pirate XVII, Fie. 1. 
Testaceus, coriaceus: capite antice impressione brevi frontali, alterisque duabus frontalibus majoribus 
oblique ovatis mamuillatis ; antennarum clava parva, lata ovata apice acuto ; prothorace subquadrato, parte antica 
majori, capitis latitudine, et subruguloso rugis transversis, parte postica parum angustiori, pone medium impres- 
sione tenui transversa, in medio punctum profundius formanti; elytris oblongis subparallelis, prothorace multo 
latioribus, sub lente coriaceis; pedibus brevibus valde compressis ; tibiis apice curvato-truncatis. 
Long. corp. lin. 22. 
Habitat ; Natal et Zoolu, Africa Merid. (Gueinzius). In Mus. Hopeiano Oxonie. 
The discovery of a species of this remarkable genus in the South of Africa, differing in certain particulars from 
the Sierra Leone type, is very interesting, and has enabled me, by an examination of the organs of the mouth, to 
establish the relationship of the genus with the Paussidw, disputed by Dr. Gerstaecker. The mandibles (fig. 1 e) 
are sickle-shaped, with a small tooth in the middle of the inner margin, and a slender basal lobe. The maxilla 
(fig. 1d) are very thin and horny, curved at the tip and bidentate, with 4-jointed maxillary palpi, the first joint 
being very short, the second very large and inflated, and the third and fourth very small. The mentum (fig. 1 ¢) 
is straight in the middle of its front margin, and the lateral angles prominent; the labium is large, flat, rather 
transverse, with the middle of the fore margin produced and rounded ; the labial palpi are robust, rising from a 
basal scape, with the two basal joints short, the third thick, elongate, oval, and rather acuminated at the tip 
(fig. le). The head is semiglobose in front, and the arrangement for disposing of the antennw when at rest is 
remarkably interesting. In the front of the face are two oval depressions, separated by a slender raised mesial 
line; the basal joint of each of the antenne is fixed at the outer upper part of these depressions, into which it 
shuts like a valve ; when so shut, the large clava of the antennz falls closely upon it, the whole scarcely standing 
off from the surface of the head. Fig. 1 a shews the head and prothorax, seen laterally, with one of the antennie 
at rest in front of the kidney-shaped eye. In fig. 14 the left antenna is opened out from the depression, whilst 
the right antenna is laid at rest, at which time the small connecting joint is brought into contact with the small 
mesial ridge above mentioned. The prothorax is not so short and transverse as in H. bucephalus, and the furcate 
impression on the face is wanting. 
