122 Mr. H. W. Bates on the Longicorn Coleoptera 
rowed behind, asin Myowinus. As the genus is very imperfectly 
known at present, I add a list of all the described species, in- 
eluding those introduced in the present memoir. 
1, A. leuconotus, Thoms. Classif. p. 10, = sellatus, De. Cat. sec. 
Chevrolat. South Brazil. 
2. A. pubicornis, Serville. South Brazil. 
Oreodera pubicornis, Serv. Ann. Soc. Ent. Fr. iv. p. 21. 
; Aigomorphus pubicornis, White, Cat. Long. Col. Brit. Mus. 
3. A. centrolineatus, n.sp. Amazons and Venezuela. 
4. A. senilis,n. sp. Amazons. 
5. A. scutellaris, n. sp. Amazons. 
6. A. canescens (Dej. Cat.?), n. sp.* South Brazil. 
7. A. tuberosus, Germar. 
Lamia tuberosa, Germ. Ins. Sp. nov. p. 477. 
8. A. subsellatus, White. 
Alphus subsellatus, White, Cat. Long. Col. Brit. Mus. p. 375. 
The Atdilis griseofasciata of Serville, included by White in 
this genus, does not belong to it. Its proper position, as shown 
by the length of the basal joint of the antenne and other cha- 
racters, 1s amongst the Acanthocinite. 
1. Alphus centrolineatus, n. sp. 
A. oblongus, modice convexus, fusco-ferrugineus, tomentosus, pilis 
- cervinis passim vestitus: thorace fusco bilineato : elytris punctatig, 
punctis setiferis, apice oblique truncatis, apud medium linea abbre- 
viata, sutufali, communi, fusca ornatis. Long. 5 lin. dQ. 
Head moderately broad, tomentose. Antenne in both sexes 
half as long again as the body, dull ferruginous, spotted with 
hoary tomentum, pubescent, more densely so beneath than above ; 
the terminal joimts more slender and less hairy than the pre- 
ceding. Thorax with large lateral tubercles, and two impunctate 
obtuse dorsal ones, the interstices coarsely punctured: on each 
side of the upper surface is a longitudinal dark brown line. 
Elytra punctured throughout ; the punctures closer and granu- 
lated towards the base, each furnished with a short blackish 
* Alphus canescens, n. sp.— Oblongus, antice leviter attenuatus, tomento 
cinereo-olivascente vestitus. Caput parvum, fronte inter antennas 
concava. Antenne corpore duplo longiores, infra dense ciliate, 
canescentes, articulorum apicibus nigris. Thorax grosse punctatus, 
supra breviter tricarinatus. Elytra grosse irregulariter punctata, 
olivascentia, apud medium canescentia, apicibus breviter truncatis, 
carinis centro-basalibus parum elevatis postice prolongatis. Subtus 
niger, pilis cinereis vestitus. Pedes cinereo-pubescentes. Long. 7 lin. 
Rio Janeiro. 
