ART. 5. LARVAE OF CALENDEINAE COTTON. 3 



broadly rounded from middle to npex, whicli is somewhat angular; 

 the sides nearly straight from middle to posterior angles. 



Epicranial and frontal sutures distinct; in many genera a longi- 

 tudinal suture, the adfrontal suture, branches from each of the 

 frontal sutures and usually continues to the posterior end of the 

 head limiting the so-called adfrontal region. In Cosmopolites an 

 additional sviture runs parallel to and a short distance from the 

 adfrontal suture. 



Frons subtriangular, sometimes with endocarina indicated by a 

 short, dark, median line on the surface. Frons provided with five 

 pairs of setae. 



Clypeus broadly transverse and bearing at suture separating cly- 

 2'»eus and epistoma two fine setae on each side. 



Labrum subtriangular, broader than long. On the dorsal surface 

 labrum bears six large setae, usually simple but in Cosmopolites and 

 Metamasius with some of them branched; on the margin it has 10 

 or more thickened setae that are simple in some species and branched 

 in others or both simple and branched. 



Each epicranial half bears nine large setae and usually one or 

 more minute setae near occiput. 



Eye represented by a single ocellus. 



Antennae fleshy, two-jointed, located at the lateral angle of frons ; 

 first joint broad and short and supplied with several small papillae, 

 second slender and short. 



Mandible stout, triangular, at tip with single blunt tooth or slightly 

 bifid, two dorsal setae, no molar part. 



Maxilla with cardo distinct and simple. Maxillary mala entire, 

 tip obtuse, ventral surface smooth and lightly chitinized, dorsal 

 surface with a longitudinal row of simple or branched setae and in 

 RhyncJiophoms proximally with a group of setae. Tip of mala 

 usually with a group of three strong setae. Maxillary palp ex- 

 tending slightly beyond mala, two- jointed, borne by a large mem- 

 braneous palpifer. Proximal joint thick, cylindrical and bearing 

 a single seta on apical membrane, distal joint finger-like, bearing 

 several small terminal papillae. There are three other setae on 

 maxilla, two near base of palpifer and one about midway between 

 palpus and end of cardo. A verj' minute seta with sensory spot is 

 present near stipes labii but usually concealed by folded skin. 



Mentum, submentum, and maxillary articulating area fused into 

 a fleshy region. Three pairs of setae are present. Eulabium 

 posteriorly enforced by a median triangularly-bent chitinization. 

 Between the palpi a small slightly bilobed ligula. Labial palp 

 short, conical, two-jointed, distal joint with several small terminal 

 papillae. Eulabium bears two setae on ventral surface ; ligiila bears 

 four setae and two sensor}' spots. These setae are simple in some 



