LAEVAL FOR^rS OF f'OT.EOPT?]RA 



7. Second aiiteiinal joint prolonged distally on the inner side into 



a cylindrical process carrying the apical joint ; cylindrical 

 process of second joint of about the same length or longer 

 than basal portion of joint ; sensory appendix large ; inner 



margin of mandible without a longitudinal series of setae 



C antharidae-MaJth 0(1 inae (pi. 77 



Second antennal joint without a distinct c.ylindrical process; 

 inner margin of mandible ventrally and medianly with a 

 longitudinal series of short, densely set setae. (Retinaculum 

 either with (in 8ilis) or without (in Cantharis and Poda- 

 hrus) a small tooth posteriorly at base) 



Cantharidae-Canfharinae (pi. 77 

 H, J, M-U) 



8. Frontal sutures present; abdominal spiracles placed in the 



epii^leural plates. (Mandibles separate at base, perforated 

 by a longitudinal canal, and often associated proximally M'ith 

 an ear- or tooth-shaped hairy enlargement ; retinaculum 

 present, but very small in a few forms as Photinus; luminous 

 organs usually present ; saclike gills from sides of first to 

 eighth abdominal segments present in some aquatic Lampyrid 



larvae Lampiiridae'^^ (pis. 71 0-V, 75 



F-H) 

 Frontal sutures absent ; abdominal spiracles placed in the para- 

 scutal areas above the epipleura. (Mandibles either sej^arate 

 or meeting at base; retinaculum absent) 9 



9. Stipes and mentum separate ; cardo present ; galea palplike and 



two-jointed ; mandibles separate, perforated by a longi- 

 tudinal canal ; antenna three-jointed with apical joint and 

 disk shaped appendix. (Luminous organs usually present) 



Phengodidae (pis. 74 AV-X, 75 

 I-K) 

 Stipes and mentum fused ; cardo A-estigial or absent ; galea one- 

 jointed ; mandibles meeting sagittally at base ; each mandible 

 cleft from tip to base, with the inner part dagger-shaped and 

 sliding into an open canal in outer part; antenna one- or 

 two-jointed, distally covered with a large, dome-shaped ap- 

 pendix {CaenieUa with intlated, tubular dorsal projections)... 



Lycidae (pi. 76 A-K) 

 «•■* Vogel, R., Lampyyis noctduca L., Ztschr. f. Aviss. Zool., vol. 

 112, 1915, pp. 291-432, four plates, many figures in text. 



Bugnion, E., Phausis delaroiizeei Duv. and Lnciohi Jiirifanica 

 Charp., Mem. Suppl. an Riviera Scientifique, 1929, pp. 1-131, figs. 

 1-61. 



Blair, K. G., Aquatic Lampyrid larva from S. Celebes, Trans. 

 Ent. Soc. Lond., 1927, pp. 43-45, one figure. 



48 



