CO Mr. (jiilbert J. Arrow's Conlnbution to the 



Genus Enuomychus 



As Gorham has himself admitted (Proc. Zool. Soc, 1887, 

 p. 650), the difterence in the maxillary palpi upon which 

 he based the genus Cyanauyes {Coenomydms Lewis) is 

 not a substantial one and that genus is insufficiently 

 distinguished frojn Endomychits. He has rightly referred 

 here Mycetina limhata Horn (which Cziki's catalogue 

 has for no apparent reason placed in Aphorisla), but is 

 entirely wrong in uniting with it the insect he himself 

 very cursorily described (Endomycici Recitati, 1873, p. 04) 

 as Endo?nychus i-puncfalus. That species, omitted from 

 the catalogue, is very like E. coccineus L., but of shorter 

 form. The actual habitat of the species, the unique specimen 

 of which is now in the British Museum, is uncertain. 



Genus Eucteanus. 



The Britisli Museum is fortunate in possessing types of 

 all the known species of this genus. The remarkable 

 uniformity which exists in the colour and pattern has 

 caused the number of species to be overlooked. Not 

 only have E. hardwickei Hope and E. coelestinus Gerst., been 

 wrongly united, but the specimens described by Gorham 

 as E. cruciyer and E. doherlyi consist in each case of two 

 species. As Mr. Gorham has not confined himself to 

 the selection of a single type of the species described by 

 him, I have selected in these cases the specimens from 

 which the figures accompanying his descriptions have 

 been drawn. E. hardivickei Hope differs from E. coeles- 

 tinus Gerst. (the type of which has been acquired with 

 the Gorham collection) by its longer antennae, narrower 

 club, more transverse pronotum and the markedly oblique 

 position of the anterior elytral patches. 



The genus consists of two very well-marked divisions, 

 the first and typical one composed of species of elongate 

 shape, in which the sexes are strongly differentiated, the 

 males having the abdomen hollowed out beneath and the 

 sides of the cavity elevated into very strong sharp-edged 

 crests. The remaining species are short and broad in 

 shape and the sexes are alike. The shape of the antennal 

 club is as remarkable for its variation according to the 

 species as is the elytral pattern for its constancy. 



The followng table gives the differential characters of 

 all the species in a concise form. 



