Set/chcUes and Rangoon. 5 



Matfliews also states (Mon. pp. 109, 115) tliat tlie liind 

 wings are either absent or small and narrow in Suicoderus 

 and Anisomeristes, but in those specimens of S. (^4.) seychel~ 

 lemis, sji. n., wiiich T have dissected they are miicii longer 

 than the elytra. For the rest Matthews describes them as 

 "ample" in his diagnoses of all the other genera except six, 

 in which he either states that he had not examined them or 

 does not mention them at all. But in the case of some 

 genera examination of larger numbers both of species and 

 individuals is j)robably required. 



Technique. — In fixing the generic position of species I 

 l.iave never relied on genercd appearance alone, but have in 

 all cases made balsam-preparations of antennre and mouth- 

 parts for examination under the compound microscope. 

 'J'hese preparations are mounted between two cover-slips, one 

 of which is attached to a cardboard framework ; the thinness 

 of the glass then allows of both sides of the object being- 

 viewed tlirough a high-power objective, while the cardboard 

 framework admits of the preparations being pinned beside 

 the insects. Balsam-preparations appear almost essential in 

 dealing with Corylophid^e, and are indispensable in describing 

 any new genus. 



Measurements oi\<'X\g\\\ have been made with a calibrated 

 micrometer-eyepiece. Drawings made with the aid of a 

 drawing- apparatus. 



For comparison I have used the British Museum Collection, 

 which, including Matthews's Collection and his balsam- 

 pieparations, is fairly coni[)lete up to the date of his ' Mono- 

 graph ' (1899). Descriptions of older forms not included in 

 the ]\Ionograj)h, and of all species and genera described since, 

 have been consulted. 



LiTERATUEE. — Matthews's * Monograph of Corylophidge 

 and Spl!a3rii(Ia3 ' appeared in 1899, after its author's decease. 

 A juuiiber of species unknown to him were not inclucled in 

 his manuscript, but the editor of the Monograph refers to 

 these on pp. 19-21 and p. 217. The Monograph niay there- 

 tore be taken as a fairly complete enumeration of the species 

 uj) to and including 1899. 



The following is a list of the subsequent literature, compiled 

 from the ' Zoological Record,' the nature of each work being 

 briefly indicated. Though a catalogue of the family has 

 recently appeared, this list may also be of some use : — 



1900. Casey. Journ. New York Ent. Soc. viii. pp. 60-75, review of 

 N. Amev. forms, describing several new geiieni and apecies : 

 BdtJuDia, g-. i\., Gronevus, g. ii., Eutriliu, g. u. near Orlho^jenis, 

 Mohunba, g . u. near tSacinm. 



