72 [Angvist, 188.^ 



C. lutexJis, Fab. — Of a uniform testaceous colour, clothed with thick and fine 

 pubescence ; punctuation close and fine. Length, 1^ — 2 lin. 



In abundance in spring in hawthorn blossom. 



C.fungicola, Heer. — Of a somewhat light ferruginous colour, with a darker 

 shade on each side of the elytra, which is more or less ill defined, and sometimes 

 disappears altogether ; pubescence longer and more scanty and punctuation more 

 diffuse and stronger than in C. luteus ; it is also slightly longer in form, and rather 

 more convex and shining than the latter species. Length, 1^ — 2 lin. 



Common in fungi, especially in autumn. 



These species are sometimes rather confusing ; but, apart from 

 other distinctions, the difference of habitat will allow of their deter- 

 mination. 



IPINA. 



As we approach the end of the Nitidulidce we come upon certain 

 tribes w^hose position seems somewhat doubtful, but which afford an 

 easy means of transition from one family to the next ; such tribes are 

 the IpinaanA BMzophagina, which lead into the Trugositidce. Of the 

 Ipina we possess three genera — Cryptarclia, Ips, and Pityopliagus ; 

 the latter of these has usually been classed w'ith Ips, but is now 

 rightly separated from it. Some authors insert the CyhocephaUna 

 betw^een the Cycliramina and Ipina, but the four-jointed tarsi and 

 contractile body of Cyboceplialus point to a very different position. 



The Ipina are characterized by having the labrum hidden, instead 

 of free and visible, as in the preceding families ; the antennae are 

 eleven-jointed, with a somewhat loose three-jointed club ; the pro- 

 sternum is strongly produced, more so in Cryptarclia than in Ips ; the 

 mentum is very narrow, usually oblong or trapezoidal ; the mandibles 

 in Ips, especially in some exotic species (e. g., Ips Japonica), are very 

 large and strong ; in Cryptarclia they are slender and sickle shaped ; 

 the labial palpi are short in Cryptarclia, longer and less stout in Ips ; 

 the maxillary palpi are somewhat slender ; the membranous paraglossse 

 in Ips are very conspicuous. 



The British genera may be thus divided : — 



I. Anterior coxal cavities open behind. 



1. Thorax overlapping base of elytra ; elytra entirely covering abdomen ; body 



oval, upper surface pubescent Crtptarcha. 



2. Thorax not overlapping base of elytra ; pygidium exposed ; body elongate, 



upper surface glabrous Ips. 



II. Anterior coxal cavities narrowly closed behind ; other characters as in Ips... 



PiTYOPHAGUS. 



