Mr. M. Burr — Notes on the Forlicularia. 247 



third abdominal segments. This character is insufficient to 

 justify the separation of a genus, and accordingly Scudder 

 (Proc. Bost. ISoc. N. H. xviii. p. 290, 1876) sank Brachylahis, 

 as mariti»ia is the type of Forcinella { = Anisolabis), from 

 which maurit<mica cannot be generically separated. But 

 Scudder had not seen chilensis, Blanch., or he would have at 

 once recognized its difference from marit'una, though he 

 knew and described Uiider the genus Ci/lindrogaster the 

 species nigra, which is now known to be a true Brachylabis. 

 In 1883 de Bormans (Ann, Soc. ent. Belg. xxvii. p. 64) 

 separated Brachylabis, Dohrn, tor chilensis, which he made 

 the type, and punctata, Dubr. Verhoeff did not know any of 

 the six described species of Brachylabis when he erected his 

 family Isolabidse for liis three genera IsoJabis, Ctenisolabisy 

 and Leptisolabis, all from the Ethiopian liegion (SB. Ges. 

 naturf. Vv. Berlin, 1901, no. 1, p. 10) ; but tliree years later 

 (Arch. f. Naturg. 1904, Bd. i. p. 119) he noted the resem- 

 blance between the Isolabidse and Brachylabis, though he 

 had not seen a single specimen of the latter. He doubted 

 the inclusion of B. chilensis in the Isolabida^, but suggested 

 tliat B. bijuveolata was a true Isolabid. 



A comparison of tiie generic characters shows that the two 

 genera are evidently allied, and a glance at the types in 

 Berlin removed all remaining doubt. 



It now became necessary to examine the different species of 

 Brachylabis to see if it were possible to reorganize the 

 system and allocate the various species to the different 

 genera. 



Fortunately I possess in my collection the following- 

 species: — chilensis, Blanch., nigra, Scudder, malgacha, Burr, 

 punctata^ Dubr., from Java, as well as punctata, Bormans, 

 from Burmah, which is a distinct form. 



By using Verhoeff's arrangement of the Isolabidse, it was 

 possible to allocate all these species to what appears to be 

 their true position; thus the riddle of the Isolabida?, which 

 has puzzled dermapterists since 1902, is solved. 



Table of Subfamilies and Genera. 



1. Seginentum ultimum dorsale S margiue 

 postico medio exciso, utiinque lobulo 

 triaugulari instructum; corpus I'erecylin- 



dricum Brachylabix^. 



2. Mesoiiotumelytris rudimentaiiisinstruc- 



tum ". 1. Verhoeffia, g. u. 



2.'1. Mesonotum elytris rudimeiitariis uuUis. 



;i. Mesonouim lateribus cariiiatis 2. BrcuJu/Iahis, Dohrn 



o.o. Mesouotuin lateribus iutegris, inler- \{= CtcHis<jlahis,\tiv\\.). 

 duui tumido-elevatis. 



