Mr. H. W. Bates’s Notes on Longicorn Colcoptera. 295 
haud incrassato; elytris versus apicem paullo dilatatis, apice 
singulatim rotundatis, supra sublineatim punctatis ; corpore sub- 
tus pedibusque nigris, femoribus plus minusve testaceis. 
Long. 33-4 lin. 
Rio Janeiro (Lev. Hamlet Clark). 
The forehead is only moderately convex in the single ex- 
ample examined; but the vertex is deeply depressed, and 
the elytra are destitute of lateral keels. The antennal scape 
is relatively only a little longer than in 7. capillata, but it 
is nearly equal in length to the third joint; the long hairs are 
not so dense beneath the joint as in other species. 
Tyrinthia reversa. 
Elongata, postice dilatata, nigro-pilosa, supra fulva, fascia frontali, 
thoracis lateribus, sutura vittaque utrinque elytrorum nigris: 
fronte conice porrecta; antennis dense et longe pilosis, scapo 
valido, modice elongato ; elytris dense punctatis, subtiliter elevato- 
lineatis, apice singulatim rotundatis; corpore subtus pedibusque 
nigris, coxis et femoribus testaceis. 
Long. 43 lin. 
Rio Janeiro (Rev. Hamict Clark). 
Very similar to 7. longiscapus ; but the dorsal part of the 
occiput and thorax are fulvous instead of black, and the entire 
flanks of the latter are black. The forehead is produced and 
conical, with a slight notch in the apex of the protuberance. 
Tyrinthia xanthotenia. 
Sublinearis, postice deplanata, erecte pilosa, cinereo-nigra, capite 
(vertice excepto), thorace vitta angusta laterali, elytris vitta lata 
laterali, pedibus antennarumgue articulis quarto quintoque et scapo 
(infra) melleo-flavis: capite inter antennas depresso, fronte convexa 
linea mediana profunde divisa; thorace parvo, medio paullulum 
angulato, antice angustato ; elytris ante apicem paullo rotundatis, 
apice sinuatim truncatis, angulo exteriore dentato, dorso usque ad 
apicem declivi, lineatim crebre punctulato, carina laterali obtusa 
subrecta, epipleuris modice (postice perparum) elevatis ; antennis 
articulo tertio undique longe, modice dense piloso. 
Long. 32 lin. ¢? 
Rio Janeiro, Brazil. 
Tyrinthia obtusa. 
Oblongo-linearis, elytris apice late rotundatis haud dilatatis, late- 
ribus carina incrassata longe ante apicem terminata: rufo-fulva, 
erecte pubescens, capite postice supra nigro, fronte (¢ fortius) 
conica, vertice valde concavo; antennis nigris, articulo tertio 
longissimo, paullo incrassato, dense hirsuto, quarto ad undecimum 
