1909.] 



NATURAL SCIENCES OF PHILADELPHIA. 



53 



1904c 



1904. 



1900. 



1901. 



1830. 

 1838. 



1839. 

 1889. 



1893. 

 1899. 

 1862. 

 1879. 



1906. 



1854. 



meso- or 



tin 



-. Zur vergl. Morphologie und Systematic der Embiiden. 

 Bd. 82. 



Ueber den Thorax von Gryllus domesticus Zeit Wiss. 



Nova 



Zool. 



The Basal Segments of the Hexapod Leg. Am. Nat., Vol. 



Acta, 



Voss. 

 LXXVIII. 



Walton. 

 XXXIV. 



. The Metathoracic Pterygoda of the Hexapoda and their Relation 



to the Wings. Am. Nat., Vol. XXXV. 



Westwood. On the Thorax of Insects. Zool. Jour., Vol. V. 



. On the comparative structure of the Scutellum and other terminal 



dorsal parts of winged Insects. Entom. Mag., Vol. VI. 



. Introduction to the Modern Classification of Insects. London. 



Wheeler. The Embryology of Blatta germanica and Doryphora 

 decemlineata. Jour. Morph., Vol. Ill, No. 2. 



. A Contribution to Insect Embryology. Jour. Morph., Vol. VIII. 



Willem. Recherches sur les Collemboles et Thysanoures. Gent. 



Winslow. Om byggnaden of Thorax hos Insekterna. Helsingborg. 



Wood-Mason. Morphological Notes bearing on the Origin of Insects. 

 Trans. Ent. Soc. London. 



Woodworth. The Wing-veins of Insects. Univ. California Agr. Exper. 

 Station Pub. Technical Bull. Entomol., Vol. I, No. I. 



Zaddach. Untersuchungen uber die Entwickliung und Bau der Glieder- 

 tiere. Berlin. 



Reference Letters. 



— ", or — '" — Indicates that the sclerite in question belongs to the pro-, 

 meta-thorax. 

 -'"" etc. — Indicates that the sclerite is abdominal. 



AD Apodeme. 



AP Apophysis. 



C Coxa. 



Cj Eucoxa. 



C, Meron. 



Cm Coximarginal sclerite. 



CS Cervical sclerites. 



CS 1 Ventral cervicals. 



CS 2 Lateral cervicals. 



C»S 2 x Posterior lateral cervicals. 



CS 3 Dorsal cervicals. 



C. PI Cervico-propleuron . 



EM Epimeron. 



EM C Costal sclerite. 



EM & Anepimeron. 



EMk Katepimeron . 



ES Episternum. 



ESa Anepisternum. 



ESm Median region. 



ESk Katepisternum. 



ESkx Katepisternal complex. 



F Furca. 



I Intersegmentalia. 



/pi Prselaterale. 



7 P p Postpleural sclerite. 



7pt Peritremal sclerites. 



L Laterale. 



L a Anterior laterale. 



Lb Antecoxal laterale. 



L x Episternal laterale. 



.Sternal laterale. 



L 3 Hyposternal laterale. 



N Notum or tergum. 



N t Prsescutum. 



iV, Scutum. 



N~p, Mediscutum. 



A^b Parapsidoscutum (or par- 

 apsides). 



2Vg Scutellum. 



N i Postscutellum. 



N i& Mediophragmite. 



N b Pleurophragmites. 



V 4 bs Superior region of the 



pleurophragmite. 



V 4 bi Inferior region of the 



pleurophragmite . 



V 4 bp Pleurophragmal sclerite or 



parapleuron. 



PC Complementary coxal 



plate. 



PI Pleuron. 



S Sternum. 



*S X Praesternum. 



S 2 Basisternum. 



S 3 Furcisternum. 



<S 3 p Pedal region of furcister- 

 num. 



S 3 pf Postfurcal sclerites. 



«S 4 Spinisternum. 



SP V SP 2 First and second thoracic 



spiracles. 



SP a Abdominal spiracle. 



T Trochantin or trochanti- 



nus. 



Ta. Antecoxal trochantin. 



Th Coxal trochantin. 



7\ Trochantinus major. 



T~ Trochantinus minor. 



TG Tegmentary sclerites. 



TR Trochanter. 



