248 Mr. M. Burr — Notes on the Forficularia. 



4. Antennarum segmento 3 elongato, 



duplo longion quam latiori .... 3. Isolabis, Verh. 

 4.4. Antennarum segmento 3 globulari . 4. Leptisolabis, Verh. 

 ].l. Segmentum ultimum dorsale o* margine 

 postico integro, truncato ; corpus plus 



minus depression Pamsolabin*;e. 



2. Abdomen $ $ fortius dilatatum ; seg- 

 mentum ultimum dorsale <5 $ valde 



angustatum 5. Parisolabis, Verh. 



2.2. Abdomen J vix dilatatum ; segmen- 

 tum ultimum dorsale J baud angus- 

 tatuin, transversum 6. Pseudisolabis, g. n. 



Subfamily I. Bbachylabin&. 



The genus Isolabis, Verh., falling into the same subfamily 

 as Brachylabis, Dohrn, it is necessary to suppress the name 

 Isolabinaj for the subfamily and to substitute that of 

 Brachylabinsp. 



In the cylindrical form of the body, the few antennal 

 segments, the triangular head, large eyes, attenuated abdo- 

 men, excised last dorsal segment, and tapering, slender, 

 arched forceps, it is very well characterized. All the members 

 have a very distinctive appearance and cannot be confused 

 with any other group. 



Genus I. Vekhoeffia, nov. 



Antenna? segmento 3 longo, saltern duplo longion quam latiori, 4 

 longiori quam latiori, 5 tertium longitudine subaequanti ; meso- 

 notum lateribus haud earinatis, ad bumeros ipsos obtuse tumido- 

 elevatis, elytris rudimentariis instructum, caeteris cum generibus 

 Isolabide et Brachylahide congruet. 



As Verhocff, in characterizing the Isolabidae, says " Elytra 

 und Fliigel fehlen vollig," I erect this new genus for Brachy- 

 labis sjostedti, Borg (Ark. f. Zool. i. p. 568, Taf. xxvi. 

 fig. 2, 1904), from the Cameroons. Borg gives a good 

 figure, and the rudimentary elytra are plainly shown like 

 a Y-shaped suture on the mesonotum. Their form some- 

 what recalls that of the same organs in Karschiella, in which 

 the chief sign of elytra is a narrow excision in the posterior 

 border of the mesonotum. My friend Dr. Borelli, of Turin, 

 has sent me a specimen from Fernando Po, and I have in 

 my own collection one labelled " Cameroon." 



Genus IT. Brachylabis, Dohrn (sensu stiicto). 



Brachylabis, Dohrn (part.), Stett. ent. Zeit. xxv. p. 292 (1864) ; Bonn. 

 Ann. Soc. ent. Belg. xxvii. p. 64 (1883) ; Kirbv, Journ. Linn. Soc, 

 Zool. xxiii. p. 518 (1891) ; id. Cat, Orth. i. p. 16 (1904). 



CtenisolabiSf Verhoeff, SB. Ges. nat. Fr. Berlin, 1902, p. 11. 



