2ir 



3 3 



A 



larvae, the front edge of the h^-popharynx (H') is united with 

 the labium dorsally, along a definite suture (s). From this 

 front region of the hypopharynx projects a central boss which 

 bears two pairs of strong, bayonet-like spines (sp). (In the 



CO 



- M 



Fig. 5. — Dorsal view of left maxillula (Mx), hypopharynx (H), and labium 

 (M. La) of Helodine larva from Dominica (in Bromcliacea;). T, median tooth 

 on hypopharynx ; co, condyle ; sp, spines ; s, suture between hypopharynx 

 and labium ; Mx, outer lobe of maxillula ; co', its condyle ; t, llexible spines ; 

 tt, strong teeth ; e, edge of inner lobe of maxillula ; La, front edge of 

 labium; M, mentum ; p, labial palp. H, base of hypopharynx; H ', its front 

 edge. Magnified 100 diameters. .\, comb-like teeth on maxillula. Magnified 

 800 diameters. 



fieludcs lar\a, the corresponding spines are bilid at the tip.) 

 While the hypopharynx is fused with the labium in front, its 

 base (H) is markedly dorsal to the labium ; in Dascillus and 

 the Scarab;eid larvae it is separated from the latter by the 



