CHE YSOMELID AE . 



213 



ment is large ; on the inner side of the median segment is an erect, fairly thick 

 lobe ; the third segment is situated a little to the outside of the longitudinal 

 axis of the second, and bears seven papillae or hairs, as shown in Text- 

 fig. 18c. 



Text-fig. 18. — Larva of Promecotheca reichei : — a, mouth parts, from below : md, mandible ; 

 lb, labium ; p, labial palp, b, seventh, eighth, and ninth abdominal segments, from below, 

 c, right antenna. 



Triangular Structures (Text-fig. 186). 



In the present preparation a series of triangular structures is visible between 

 the last two abdominal segments, appearing to lie between the dorsal and ventral 

 surfaces of the body. In the absence of further material, there has been no 

 opportunity of dissecting a larva, and thus throwing more light on the nature of 

 these structures. 



