438 Ml-. G. J. Arrow on a 



at present known of tlie genus, were found in West Africa, 

 and from its form and affinities there is no doubt that the 

 insect lives under the bark of trees and preys upon other 

 insects. It is very distinct oenerically from any other insect 

 hitherto known, althougli it has evident affinities with several 

 distinct types of Cucujidse. In the shape of the head, the 

 very small size of the eyes, and especially in the reduction of 

 the first tarsal joint, it shows the closest approach to Guciijus, 

 the impressed lines on the head and thorax are like those so 

 characteristic of Lcemophloeus, and the abbreviated elj'tra as 

 obviously indicate relationship with Inopeplus. The differ- 

 ences from all three genera are still more striking, however, 

 than the resemblances. Tiie structure of the tarsi is very 

 different from that found in Apytho and Pseudino. 



CuCUJiNUS, gen. nov. 



Corpus deplanatum, oblongum. Caput magnum, postice latissimum, 

 postice at lateraliter stria submarginali profundeiucisum. Oculi 

 minuti, prominentes. Clj'peus brevis, leviter emarginatus. 

 Labrum exsertum, semicirculare. Mandibulge prominentes, extus 

 leviter arcuatse, apice obtuse bifidfe. Antennae moniliformes, 

 articuhs primo et ultimo modice elongatis. Pronotum breve, 

 latum, linea sublaterali, postice paulo abbreviata, incisa. Elytra 

 abdomen baud tegentia, postice paulo attenuata. Prosternum 

 latum, baud productum. Coxae 4 anteriores late distautaj. 

 Femora omnia lata. Tarsi 4 anteriores 4-articulati, postici 

 3-articulati. 



Cucujinus micromma, sp. n. 



Testaceus, elytrorumdimidio postico vageinfuscato ; valde depressus, 

 nitidus, ubique minute inasqualiterpunctulatus, capite post oculos 

 latissimo, prouoto valde transverse, angulis anticis paulo emar- 

 ginatis, posticis toto obsoletis ; elytris quam capitem ct pro- 

 thoracem paulo longioribus, sed abdominem baud tegentibus, 

 partim subtilissime striatis, postice paulo atteuuatis. 



Long, (mandibulis exclusis) 4-5*5 mm.; lat. max. 2 mm. 



Hah. W. Africa : Cameroon. 



The rather indefinite dark posterior patch is probably due 

 in part to the transparency of the elytra revealing the wings 

 beneath, and may not be a constant feature. The two speci- 

 mens described are males, and it may be expected that in the 

 female the head and prothorax will prove to be of less exag- 

 gerated size and the hind tarsi four-jointed. 



It is an exh-emelj flat-bodied insect, oblong and loosely 



I 



