332 GEO. H. HORN, M. D. 



with darker pubescence is frequently seen near the scutellum and a 

 very small space behind the middle on the third interval. 



Occurs in the desert regions of California and Arizona, bordering 

 the Colorado and Gila Rivers. 



B. floriclse, n. sp. — Body oblong, brownish, sub-opaque, elytra with two 

 transverse sinuous patches of cinereous pubescence. Head brownish, occiput 

 nearly black, sparsely but coarsely punctured. Antennae black, four basal 

 joints rufous, gradually stouter to tip and as long as head and thorax. Thorax 

 trapezoidal, broader at base than long, sides moderately arcuate, surface 

 coarsely and roughly punctured, a narrow median line of cinereous pubescence 

 and with similar vestiture sparsely placed at the sides. Scutellum quadrate 

 sparsely clothed with whitish hairs. Elytra oblong, feibly convex, at base 

 not broader than the thorax, humeri feebly prominent, surface striate, striae 

 punctured, intervals flat, punctulate and with a few distant coarser punctures ; 

 color brownish, subopaque, with cinereous pubescence arranged in two trans- 

 verse cinereous bands composed of short lines along the intervals. Pygidium 

 moderately convex, coarsely but sparsely punctured and sparsely cinereo-pu- 

 bescent. Body beneath brown but paler than above, sparsely cinereo-pubes- 

 cent. Legs pale rufous. Length .12 inch ; 3 mm. 



Very distinct from any species in our fauna by the characters given. 

 The sinuous bands composed of short lines are of irregular form, the 

 median band being more distinct and sending a process along the fifth 

 and sixth intervals to the base; the hinder band is narrower, sub-api- 

 cal and less conspicuous than the median. The intervening spaces 

 are not pubescent. 



From Florida. 



1$. protractus, n. sp. — Oblong, parallel, pale rufo-testaceous, elytra with 

 lateral black spaces; sparsely cinereo-pubescent. Head nearly black, moder- 

 ately punctured. Antennae pale rufous, feebly sub-serrate, longer than head 

 and thorax. Thorax nearly as long as wide at base, sides moderately arcuate 

 and slightly sinuate near the hind angles, base moderately lobed at middle, on 

 each side slightly sinuate, sparsely cinereo-pubescent and with a small white 

 spot on each side of the middle. Scutellum broader than long, with white 

 pubescence. Elytra oblong, parallel, disc depressed; surface striate, striae 

 finely punctured, intervals flat, densely punctulate with a row of distantly 

 placed coarse punctures; color brownish testaceous with large black spaces 

 along the sides and a small round black spot on the centre of each elytron 

 slightly behind the middle. Pygidium broadly oval, moderately convex, 

 coarsely punctured, pale rufous, at midole with broad stripe of black con- 

 stricted at middle, forming a figure 8, surface cinereo-pubescent at sides, 

 median black space with a few whitish hairs along the middle and a more 

 dense patch of pubescence on each side at the constriction Body beneath 

 brownish, paler at the sides, sparsely clothed with whitish pubescence. Legs 

 pale rufous, outer side of hind femur somewhat darker. Terminal abdominal 

 segment broadly concave. Length .16 inch; 4 mm. 



In style of elytral marking this species somewhat resembles B.pro- 



