of the Amazon Valley. 49 
of the elytra are very long and acute, the smooth posterior carine 
of the wing-cases continuing to their tips. 
Found at Para, on dead boughs in the forest. It has also 
been found by M. Bar in the interior of French Guiana, speci- 
mens collected by that gentleman having been sent to me from 
Paris under the MS. name of P. ruficollis. 
4 Probatius apicalis, n. sp. 
P. oblongo-ovatus, fusco-niger, sordide ochraceo canoque variegatus; 
thorace ochraceo nebuloso, medio fusco bivittato: elytris postice 
modice attenuatis, apice transverse sinuato-truncatis, angulis ex- 
ternis longe spinosis, dorso punctis setiferis in striis dispositis, 
dimidio basali maculaque apicali ochraceis nigro conspersis, fascia 
lata pone medium fusco-nigra lineolis canis variegata: antennis 
fusco-nigris, infra dense setosis, articulo quarto annulo lato pallido. 
Long. 42 lin. ¢ Q. 
Head dingy ochraceous; vertex with two divergent blackish 
vitte. Antenne black; basal joint dingy rufous, second and 
base of third joints hoary, basal half of fourth whitish ; they are 
furnished with long sete, the first joint being fringed beneath 
with them. Thorax dingy ochraceous, partly lighter and partly 
darker in hue, the centre having two nearly parallel, distinct, 
dark-brown vitte ; the lateral spines are large, conical, simply 
acute, and not prolonged at their points. Elytra gradually and 
moderately narrowed to their tips, which latter are transversely 
sinuate-truncate, the sutural angle of the truncature being ad- 
vanced but obtuse, the external angle prolonged into a stout 
spine ; the posterior carina, which in P. partitus is very long, is 
here reduced to a faint elevation close to the tip of each elytron, 
and the sutural stria is not strongly impressed; the surface has 
many rows of setiferous punctures; the basal half is dingy 
ochraceous, much speckled with black; the apical part has an 
ochraceous patch neatly limited on its anterior edge, and varied 
with dusky points, the extreme apex near the suture having a 
smaller opake ochreous spot ; the rest of the elytra is dull black- 
ish, which colour forms a broad fascia, varied only by minute 
grey linear specks, arranged in lines. Body beneath and legs 
dingy ashy; tarsi pale testaceous ; apical segment of abdomen 
black ; ventral plate obtuse, dorsal plate truncate and bidentate 
in both sexes. 
This was rather a common insect at Ega, on branches of dead 
trees in the forest. 
5. Probatius ramulorum, nu. sp. 
P. ellipticus, fusco-niger, fulvo-ochraceo variegatus: thorace dorso 
nigro, lineis duabus ochraceis antice convergentibus : elytris fusco- 
nigris, maculis ochraceis conspersis et fasciatis, apice oblique trun- 
Ann. & Mag. N. Hist. Ser. 3. Vol, xiii. 4 
