ART. 1 



LARVAE OF AMERICAN TENEBRIONINAE— ST. GEORGE. 15 



buccal surface." Hypopharyngeal sclerite {hsc, figs. 4, 8, 13) sup- 

 ported above the hypopliaryngeal bracon {hhr) by a chitinous plate 

 extending from the latter sclerite; nearly square, projecting, strong, 

 heavily chitimzed; anteriorly tricuspidate; disk excavate, in center 

 thinly chitinized. The hypophaiyngeal bracon is a well-developed 

 rod m the buccal membrane between the ventral mandibular articula- 

 tions and the hypopharyngeal region; in the latter region the rod 

 is heavily chitinized, and here somewhat fused with plate extending 

 to the hypopharyngeal sclerite, near the former region slightly mem- 

 branous. Epipharynx {eph, fig. 1) forming the buccal surface of la- 

 brum, slightly coriaceous with a posterior, transverse, broad, sinuous 

 chitinous band, just behind wliich ai>e two chitinous triedral projec- 

 tions; on the slightly coriaceous part, anterior to the band, many 

 short rigid setae arranged in a somewhat semicircular manner about 

 thQ chitinous band; medianly, near the anterior margin, a few scat- 

 tered rmg-shaped punctures. Legs well developed, surrounded at 

 base by a large articulating area {ar). Prothoracic legs (figs 14 

 16, and 17) considerably stronger than those of mesothorax and meta- 

 thorax (fig. 22) ; coxae {cox) of the fii^t pair attached so closely 

 together that they are nearly contiguous at the base (fig. 20), nearly 

 as long as wide, a few thin setae on exterior and interior surfaces 

 mostly along anterior margin near articulating membrane between 

 coxa and trochanter; trochanter {tr), about as long as coxa, inner 

 side distally with a callous wart, below which are usually four con- 

 secutive spinehke projections or tubercles, each bearing short seta 

 near these a few thin setae; femur (/.), about as long as, and some- 

 what wider than trochanter, armed with two spinelike, seta-bearing 

 tubercles with a much smaller one near them, besides many strong 

 scattered setae; tibia {ti) slightly shorter and much thinner than 

 lemur, proportions about two to tliree, distally armed with three 

 spinehke setae, besides many thin setae; tarsus {ta) a little more than 

 half the length of tibia, claw-shaped and strong, basal portion en- 

 larged," backward facing surface distally excavate, with proximal 

 portion round, rather soft skinned, bearing a strong seta distally 

 at base of excavation on either side. Second and third pairs of leo^ 

 inserted farther apart than the first pair, but legs considerab?y 

 thinner and not as long; the proportions of the articles also about 

 the same as those of first pair, excepting the coxae which are nearly 

 twice as long as wide. 



Prestemal area (y, fig. 20), in the intersegmental region between 

 head and prothorax, slightly chitin ized, twice as wide as gula;^^ 



'« Ligula is conically pointed and apically set with one pair of long setae in Emhanhion 

 Enlarged at base on exterior side more than that of Emhaphion 

 width^T'? . Embaphion in which the united presternal areas have nearly the same 

 width as gula and are partly separated by the preeusternal subdivision of eusternum 



