LAEVAL FOEMS OF COLEOPTEEA 



One ocellus on each side ; head protracted ; frons distinct ; 

 mentnni withont a plate and prementum without a snbtrian- 

 gnlar. unpaired plate; basal joint of labial palpus reduced 

 or absent, distal joint distinct 



A-pionidae (not including Cijlas) 

 pi. 120 A-D) 

 G. Spiracles on second to seventh abdominal segments not pro- 

 jecting and not placed dorsally 



Curculionidae and Scolyfidae^* 



(pis. 120 E-G, 121 A-U. 123 



A-E) 



Spiracles on second to seventh abdominal segments projecting, 



hook-shaped, and placed dorsally. (Larva submerged, living 



between the leaves of rice) ... C urculionidae - Lissorhoptrinae 



{Lissorhoptrns shnplex) (pi. 

 122 A-V) 

 7. ]\Iaxillary palpus two-jointed ; spiracles either bif orous with 

 large, oval spiracular opening, or, in the single genus 

 Eliyncliophonis,h\\'Ahm\9 ...Calendridae (pi. 123 P-H) 

 Maxillary jialpus one-jointed with the dome-shaped, soft end 

 covered with fine, short hairs ; spiracles unif orous, with 

 siDoutlike prolongation from a ring-shaped mouthpiece. 

 (Prothoracic tergum armed in the middle with a transverse 

 ridge composed of a series of ring-shaped scleromes of dif- 

 ferent sizes) Plafypodidae^^ (pi. 123 I-P) 



V. LYMEXYLOIDEA 



The systematic position of this series has been discussed in a 

 footnote^". It contains only the one family Lymexylidae which is 



®* The larvae of the Curculionidae and Scolytidae can not be 

 separated. In most of the larvae of these two families, the body is 

 whitish, fleshy, subcylindrical, more or less curved, without ab- 

 dominal prolegs, and not clothed with long hair. However, in the 

 leaf -mining genera Orchesfes and Prionomerus, (pi. 120 E, F), the 

 body is rather straight and either flat both on the dorsal and ven- 

 tral side, or only flat ventrally but projecting laterally into broad, 

 rounded processes on most of the segments (Tragardh. Ivar, Arkiv 

 for Zoologi, vol. 6, No. 7, 1910, pp. 1-22, English text, two plates) ; 

 in the slimy larva of Clonus solani Fab. (pi. 120 G), which is free- 

 living on the leaves of Verhascum, and in larvae of Hyperini paired 

 prolegs are found on the underside of the abdominal segments ; and 

 in the hyperine species Phelypera distigma Boheman, from Guate- 

 mala, (pi. 121 U), the body is beset on the back with dark hairs as 

 long or considerably longer than the width of the larva. 



*^^ Hubbard, H. G., The Ambrosia Beetles of the United States, 

 U. S. Dept. Agr., Div. Ent., Bui. 7, New Series, 1897, pp. l-t-16 

 with figures. 



67 



