132 ; {November, 
suturam versus flavo-testaceis, ornatis, marginibus lateralibus apiceque 
pallidulis ; thorace quadrato, antice sat rotundato, postice angustalo, 
angulis posticis preminulis, basi impunctato, JSovet ulrinque profunda ; 
metasterno punctulato. Long. 4 lin. ?. 
The pale vitta of the elytra commences at the base, spreading there 
to the 7th interstice, but through the rest of its course it is confined to 
the 6th, and terminates at two-thirds of the elytral length; it is suc- 
ceeded, a little more inward, by an irregular pale spot on the 4th and 
5th, and this again by a smaller spot on the 3rd and 2nd interstices. 
The elytra have impunctate, sharp Strie. 
Rio Janeiro. Taken by the late Rev. Hamlet Clark. 
LoxaNDRUS VIRIDESCENS, n. sp.—Minor, gracilior, piceo-niger, 
elytris sericeis, iridescentibus, leviter viridi-tinctis, antennis, palpis 
pedibusque testaceo-rufis ; thorace valde transverso, elytris mullo angus- 
tiort, antice leviter rotundato, postice paululum angustato, marginibus 
postice lutius explanatis rufo-testaceis, angulis posticis prominulis, supra 
basi utrinque punctis majoribus perpaucis JSoveaque breviori profunde 
impresso; elytris punctulalo-striatis, sutwra marginibusque plus minusve 
rufis ; corpore subtus impunctato, sericeo-nitenti. 
Long. 3 lin. 8 9. 
Generally distributed throughout the Amazons region, under 
sediment, on the banks of the rivers. 
LOXaNDRUS OPACULUS, n. sp. — Oblongus, sub-parallelus, infra 
Jerrugineus, supra niger, elytris sericeo-opacis palpis antennarumque 
basi rufo-testaceis, pedibus rufo-piceis ; thorace quadrato, elytris vix 
angustiori, antice vix rotundato, postice parum angustato, angulis posticis 
haud prominulis sed distinctis, marginibus rufo-piceis, medio basi punctis 
paucis magnis, fovea utrinque brevi fortiter impressa ; elytris subtiliter, 
punctato-striatis, sutura postice marginibusque rufo-piceis ; corpore subtus 
impunctato. Long. 3 lin. 8 ?. 
The whole under-surface of the body is of a clear ferruginous red 
hue in both my specimens: this character, together with the nearly 
square thorax and the very fine sharply impressed strie, amply dis- 
tinguish this species. 
Banks of the Tapajos. 
LoXANDRUS MACRODERUS, n. sp.—Obdlongus, prceo-niger, politus, leete 
wridescens, labro, epistomate, palpis, antennarum basi (reliquis obscurioribus), 
pedibusque flavo-testaceis ; thorace elongato, quadrato, postice haud angustato, 
