4IO EXTOMOLOGICAL NEWS. [Nov.,'17 



region in the Apterygota, and in the prothorax of the lowest 

 Pterygota. In Fig. 2, a is the trochantin, from which the so- 

 called trochantinelle has become detached. 

 Af — Antennifer, or antenna-bearing process. 

 An — Antennale, or ring at base of antenna. 

 ^-Jf— Antenna, only portion of basal segment shown. 

 Bi)i — Mandibulare, or sclerite at base of mandible. 

 CI — Clypeus. 

 e — Curvipleurite, or curved pleurite marked of? in the episternal 



region. 

 Em — ^Epimeron. 

 i — Laterocervicale, or lateral cervical sclerite, divided into two parts 



in Figs. 2 and 3, the sclerite being marked of? in the posterior 



part. 

 L— Labium. Only basal portion shown. 

 Lb — Labrum. 

 Md — Mandible. 



M.r — Maxilla. Only basal portion shown. 

 o — Posterior portion of lateral cervical sclerite. 

 Pc — Paracephal suture. 

 Pn — Pronotum. 

 Ps — Two ventral cervical sclerites, the anterior of which is the inter- 



sternite, and the posterior one is the presternite, excepting Fig. 2. 

 Pt — Pretergite, or anterior transverse region of tergum. 

 s — Region in front of prothoracic epimeron, probably homologue of 



the lateropleurite of other segments. 

 St — Sternum of prothorax. 

 Tf — Trophifcr, or trophi-bearing segment to which all three of the 



mouthparts are articulated in Fig. i. It is a portion of the 



occipital region. 

 z' — The laterosternite in Figs. 5, 6, 7 and 9. In others it is a region 



connecting sternum with pleuron. 

 X — Small plate in front of dorso-pleural region. 

 z — Dorsal cervical sclerite, or intertergite. 



Bibliography. 

 1905. Bengtsson. — Z. Morphologie des Insektenkopfes. Zool. Anz., 



29, p. 457. 

 1909. Berlese. — Gli Insetti. 

 1908. Brunner V. Wattenwyl. — Die Insektenfamilie der Phasmiden. 



Leipzig, 1908. 

 1904. Boerner. — Z. Systematik der Hexapoden. Zool. Anz., 27, p. 511. 

 1902. CoMSTOCK & KocHi — Skeleton of the Head of Insects. Amer. 



Nat., 36, p. 13. 



