^■1 LARVAE OF AMERICAN TENERRIONINAE— ST. GEORGE. IQ 



posterior truncate ; lateral margins bearing few short setae Sterna 

 of first sax abdominal segments (figs. 21 and 27) transve;selv rec 

 tangular seventh and eight more arcuate posteriorly; ninth trans 

 verse,, subtrapezo.dal; tenth very small, tubular (fig. 30 Firsi 



le ninth ^IhT'"*', "^f"' '™ '^''"^™^^'' ™- "* *-' '^n 

 setae, ninth with three short setae on each lateroposterior marffin- 



tenth without setae. Spiracles (fig. 21) annular, broadly ZT ' 



EXPLANATION OF PLATES 



Figures 19 21 and oq tn qh ;„.i • ^^^^^^' ^"' ^^^ 22 refer to the larvae; 



Plate 1. 



FIG. 1. Merlnus laevis. Epipharynx (eph) and anterior margin of labrum 



2. J/en.». /aet... Dorsal side of right mandible; a^, a^ fa the tricZ' 



date apex; n,, molar part; c rounded surface on exte ior side of 

 cutting edge; p, excavation opposite molar part 



3. J/ean«. laevis Head; Z«6, labrum ; cZ, clypeus;' fa, anterior anale 



4. J/en«ws laevis. Lateral view of buccal cavitv wifh 



hypopharyngeal bracon. snown, /iftr, 



Tor ,'°e:?'T\'"''' ''""^ '^'"•- "•■ "^""'. """^ ^y^^^^ZZL 

 for neural articulation of mandible; M fossa for cardo- „, maxfT 



tpj rand V""' ™' """"^ ^"' ^"^^ -»«marls:6: -J" '; 

 stipes «, and «., inner margin of stipes; ma, mala ma-ciUaris- 

 f>o», basal membrane of maxillary palpus. maxiilaris, 



hypopharyngeal sclerite ; Mr, hypopharyngeal bracon; /rmandi^: 

 lar ventral fossa; oes, esophagus manaiDu- 



9. 3/enn«. Zae./.s-. Eighth and ninth terga ; dorsal view 

 0. Merrnus laevr.. Ninth abdominal ("pygidial") segment; lateral view 

 11. Mennus laevis. First thoracic spiracle 



''■ '"gid^'-rf • ?''t""= ^"°'^"^ ^'^^^^= ^-^' ^-"^ «b^o-inal C'py- 

 gulial ) segment; X, tenth abdominal ("ai>al") segment showing 

 Its upper lip ; lower lip not visible ''egment, showing 



13. Me^inus laevis Hypopharyngeal region ; same structures as in Figure 



8 reversed; /^.e, base from which hypopharyngeal sclerite originlles 

 eso^phaguT '"^'"'^^ '''''''-' ^"^' "^^"^^'^"^- -"^-^ fo-a; oi; 



14. Merinns laevis. Lateral view of larva. 



