302 CONNECTICUT GEOL. AND NAT. HIST. SURVEY [Bull. 



Hamular process: A fork of the hamule. 



Hamules: Usually forked appendages of the second segment of the 



male; posterior lamina. 

 Humeral: Relating to the shoulder. 



Inferiors: The lower anal appendages. 



Infraepisternum: The lower division of the episternum; katepi- 



sternum. 

 Infuscated: Smoky gray-brown; sepia. 

 Instar: The period or stage between molts. 

 Internal triangle: Triangular wing cell behind and proximad of the 



triangle. 

 Interpleural suture: Suture between meso- and metapleura. 

 Intersternum: A large sclerite on the sternum of the thorax just in 



front of the abdomen. 

 Invagination: A pouch or sac formed by the infolding or indrawing 



of the outer surface. 



Katepisternum: The lower division of the episternum; the infraepi- 

 sternum. 



Labial palpus, -i: Paired, jointed appendages of the labium. 



Labium: A hinged appendage folded beneath the head. 



Labrum: The ventral flap attached to the clypeus on the front of the 



head. 

 Lanceolate: Lance- or spear-shaped; oblong and tapering to the end. 

 Laterad: Towards the side, away from the meson. 

 Lateral keel: Ridges on the sides of the abdomen. 

 Lateral spines: Spines at the caudal end of the lateral keel. 

 Lateral setae: Setae of the proximal segment of the labial palpi. 



M: Media. 



Ml, M4: Branches of media. 



Mandible: The lateral upper jaws of a biting insect. 



Media: The fourth longitudinal vein in the wing. 



Median cleft of labium: A notch or cleft in the mentum of the 



labium. 

 Median lobe of labium: Same as mentum. 

 Median space: Same as basilar space of the wings. 

 Mental setae: Setae on the inner surface of the mentum. 

 Mentum: The central sclerite of the labium, second from the head. 

 Mesad: Towards the meson. 

 Mesepimera: Epimera of the mesothorax. 

 Mesepisterna: Episterna of the mesothorax. 

 Mesocoxae: Coxae of the mesothorax. 

 Meson: An imaginary vertical longitudinal plane passed through 



center of the body of an insect. 

 Mesopleural suture: Suture separating episternum and epimerum of 



the pleura. 

 Mesosternum: Sternum of the mesothorax. 

 Mesostigmal plates: Small sclerites surrounding the mesothoracic 



spiracle; in this article, the term refers to the caudal plate 



alone. 

 Mesothorax: The middle division of the thorax, bearing the second 



pair of legs. 

 Metacoxae: The coxae of the middle pair of legs. 

 Metallic: Shining; opposed to dull. 

 Metapleural suture: Suture separating episternum and epimerum of 



the metathorax. 

 Metathoracic spiracle: Spiracle of the metathorax. 

 Metathorax: The third or hindmost segment of the thorax. 



