58 MADEIRAN COLEOPTERA. 
164, Cryptophagus Nitiduloides. 
Cryptophagus Nitiduloides, Woll., Ins. Mad. (-Append.) 618 (1854). 
Inhabits the damp sylvan districts of Madeira proper, towards the 
centre and north of the island. Exceedingly rare. 
Genus 61. PARAMECOSOMA. 
Curtis, ix Ent. Mag. i. 186 (1833). 
Corpus parvum, Cryptophago similimum ; alis amplissimis. Antenne 
11-art®, clavate, art'* 1™° et 2% (illo preecipue) robustis, 3° paulo 
longiore, 4° ad 8™™ latitudine paulatim vix crescentibus, reliquis 
clavam laxam 3-articulatam efficientibus (ultimo ad apicem oblique 
truncato). Labrum transverso-quadratum, antice integrum cili- 
atum. Mandibule valide triangulares, ad apicem subito mflexee 
acute (intus ad apicem in sp. Europzeis crenulatee, sed in Maderensi 
integre), mox infra apicem (preesertim in specie Maderensi) subito 
et valde excise et membrana ciliata instructe ; extus ad basin in 
nostra (sed haud in Kuropzis) profunde incise. Maaille bilobe : 
lobis apice dense pubescentibus, sed interno in sp. nostra vix unci- 
nato. Palpi breves: mawillares art? 1™° angusto flexuoso, 2"° et 
3° crassioribus brevibus subeequalibus, ultimo magno ovato: labiales 
art® 1™° flexuoso, 2°° erassiore breviore, ultimo maximo rotundato- 
ovato. Mentum amplum, antice angustatum, summo apice (in 
sp. Maderensi) leviter (sed in Europzis profunde) bi-emarginato. 
Ligula subquadrata, apice (in nostra) integra. Pedes winus robusti : 
tibiis (in typicis rectis, usque ad apicem paulatim vix latioribus, 
sed in Maderensi) subcurvatis, paulatim ultra medium latitudine 
erescentibus, dein ad apicem ipsum decrescentibus: tarsis subtus 
valde pilosis, in utroque sexu 5-art'*, art? 4°° minutissimo, ultimo 
elongato wnguiculis simplicibus munito. 
Although the details of the present g genus have been fully described 
and figured, both by Curtis and in Sturm’s Deutschlands Fauna, I 
have morericlos: dissected the Madeiran representative of it and 
given them afresh, because in its outward aspect it recedes so much 
from one or two of the European species that it might perhaps be 
imagined, at first sight, to belong to a different group. It will be 
perceived, however, on reference to the above diagnosis, that all its 
essential characteristics are precisely those of Paramecosoma,—the 
few slight points in which it recedes from it, such as the deep cleft 
at the outer base of its (internally uncrenulated) mandibles, the more 
shallow double emargination of its mentum, and its apically-attenu- 
ated tibie, being of minor importance, and such as may be fairly 
allowed for mere specific modifications. In all its other minutis, it 
agrees with its more northern allies. It may be at once known from 
