168 ]^i‘. Malcolin Barr’s Freliminary Revision of the 
and frequently asymmetrical, rarely toothed ; many of the 
genera are apterous. 
TABLE OF GENERA. 
1. Melusterjium ])ostice in lobum angustuin, 
apice rotunclatuin, productmn ; (corpus 
apterurn; abdomen subparalleluni) 
1.1. Metasternum postice tnincatiiin. 
2. Abdomen d hasi ad apicein am- 
})liatum; (forcipis braccliia d hasi 
remota; corpus apterurn) . . . . 
2.2. Abdomen pone medium plus minus 
diktatum, apice subangustius. 
3. Elytra omnino desunt. 
3.3. Elytra rudimentaria, vel perfecta. 
4. Elytra rudimentaria ; alae nullae . 
4.4. Elytra libera, perfecta; alae 
saejrius adsunt. 
5. Antennae segmentis 17-22 . . . 
5.5. Antennae segmentis 20-30 . . 
]. Titfinolobis, n. g. 
2. Gonolabis, Burr. 
3. Aiiisoldbis, Fielj. 
4. EuboreUia, Burr.* 
5. Faalis, Serv. 
6. Lahicliirodef^, Borm. 
Genus 1.— TitanolohiSj n. g. 
Cum genere Anisulabide congruet; ab eo dift’ert pedibus brevibus, 
crassi.s, metasterno margine postico in lobulo apice rotundatum 
producto. 
Type of tlie genus .—Anisolahis colossca, Idohrn. 
The powerful build and the great size attained of this 
giant among earwigs have always led me to consider it as 
forming a distinct group; an examination of the sternal 
plates shows that the posterior margin of the metasternum 
IS produced with a long, parallel-sided, apically rounded 
lobe, which is quite distinctive. 
I have never examined one of the Burmese specimens 
reported by de Bormans, but I doubt it they are referable 
to the true A. eolossea. 
The range of size of this creature is very remarkable. 
I have in my own collection a female whose length, 
inchiding the forceps, which are always short, is 22 o mm., 
and another, which attains 51 mm., both from New South 
* Borellia being praeoccujiied by Rebn (1906, Proc. U.S. N. M., 
XXX, p. 379), 1 have projiosed the new name EnboreUia, Burr. See 
Proc. U.S. Nat. Mus., xxxviii, p. 448 (1910.) 
