468 



AN INTRODUCTION TO ENTOMOLOGY 



SERIES V. — THE LAMELLICORNIA 



This series includes four families, the Scarabaeidae, the Trogidas, the Lucanidae, 

 and the Passalidae, pages 515 to 524. 



SERIES VI. — THE PHYTOPHAGA 



This series includes three families, the Cerambycidae, the Chrysomelidae, 

 and the Mylabridce, pages 524 to 535. 



SERIES VII. THE RHYNCHOPHORA 



This series includes six families, the Brentidas to the Scolytidae, inclusive, 

 pages 536 to 542. 



TABLES FOR DETERMINING THE FAMILIES OF THE COLEOPTERA 



TABLE I.— THE SUBORDERS AND THE SERIES OF SUPERFAMILIES 



A. Ventral part of the first segment of the abdomen divided by the hind coxal 

 cavities, so that the sides are separated from the very small medial part. 

 Suborder Adephaga; see Table II, below. 



AA. Ventral part of the first segment of the abdomen visible for its entire 

 breadth. Suborder Polyphaga. 



Fig. 549. — Head of Harpalus, ven- 

 tral aspect: a, antenna; g, g, 

 gula; ga, galea or outer lobe of 

 the maxilla; gs, gular suture; Ip, 

 labial palpus; m, m, mandibles; 

 mp, maxillary palpus; s, submen- 

 tum. 



Fig. 550. — Prothorax of Harpalus, 

 ventral aspect: c, coxa; em, epi- 

 merum ; es, episternum ; /, femur ; 

 n, pronotum; s, s, .y, prosternum. 



B. Head not prolonged into a narrow beak, palpi always flexible; two gula 

 sutures at least before and behind (Fig. 549) ; sutures between the prosternura 

 and the episterna and epimera distinct (Fig. 550) ; the epimera of the pro- 

 thorax not meeting on the middle line behind the prosternum (Fig. 550). 

 C. Abdomen with at least three corneous segments dorsally, and exposed 

 more or less by the short elytra. Hind wings with simple, straight veins; 

 antennae variable, but never lamellate. Series Brachelytra, See Table 

 III, below. 

 CC. Abdomen with at most two corneous segments dorsally, usually com- 

 pletely covered by the elytra; hind wings with veins in part connected 

 by recurrent veins. 

 D. Antennas clubbed or not, but if clubbed not lamellate. 



E. Tarsi usually apparently four-jointed, the real fotirth segment 

 being reduced in size so as to form an indistinct segment at the 

 base of the last segment, with which it is immovably united (Fig. 

 551, A); the first three segments of the tarsi dilated and brush-like 

 beneath; the third segment bilobed. In two genera, Parandra and 



