154 MADEIRAN COLEOPTERA, 
442. Alphitobius diaperinus**. 
Tenebrio diaperinus, Kugelann,in Panz. Fna Ins. Germ. 37. 16 (1797). 
, Iihg., Kaf. Preuss. 1. 115 (1798). 
ovatus, Hbst, Kaf. viii. 16. tab, 118. f.8 (1799). 
Alphitobius mauritanicus, Steph. [nec Fab. 1792], Ill. Brit. Ent. v. 11 
(1832). 
diaperinus, Woll., Ins. Mad, 498 (1854). 




Inhabits Madeira proper, occurring in similar places as the last 
two species. 
Fam. 49. OPATRIDZ. 
Genus 187. AUTOCERA, nov. gen.? (Vide Tab., fig. 2.) 
Corpus parvum, lineari-oblongum, angustum: capite lato, postice 
subito truncato, ad latera leviter elevato, ad apicem fere integro: 
prothorace transverso: alis amplis. Antenne (2 a) breves, leviter 
clavate, articulo Imo sat robusto, 2do ad 8yvum minoribus trans- 
versis subeequalibus, reliquis clavam haud abruptam 3-articulatam 
efficientibus. Mandibule (2b) validee cornes, apice bidentate, intus 
in medio emarginatz et membrana aucte. Mawille (2c) bilobe, 
lobis apice pubescentibus ; eterno minore. Palpi subfiliformes, 
art’ ultimo ovato ; labiales ad latera ligule inserti. Mentum (2 d) 
subquadratum, apice late emarginatum. JLigula ampla, lata, apice 
integra. Pedes (2 ¢, 2f) robusti: tabus anticis (2 ¢) valde dilatatis 
compressis, necnon ad apicem internum calcariis duobus (uno se. 
magno, altero maximo) armatis; tarses heteromeris, anticis brevis- 
simis subconicis. 
Although distinct therefrom specifically, the curious little insect 
from which the above structural diagnosis has been compiled is gene- 
rically identical with a specimen which I received long ago from the 
late Mr. Melly of Liverpool, under the name of Autocera anticipes. 
I can find no published reference to anything bearing this title, and 
I conclude therefore that (by whomsoever proposed) it has never 
been characterized. Before I had overhauled the two species criti- 
cally, I had imagined them to be minute members of the genus Sele- 
rum of Dejean,—which merges gradually into Opatrum proper, and 
from which therefore (like Gonocephalum) it can scarcely be detached; 
but, upon a more intimate examination, I find that they are totally 
distinct from the representatives of that group. Thus, apart from 
their diminutive bulk and almost unemarginated head, they recede 
from the Opatra in the proportions of their antennal joints, all of 
which between the basal one and the club are small and subequal, 
so that the third is noé longer than the second and fourth; whilst 
