GALERUCINE BEETLES — BLAKE 243 



than the lower front. Antennae extending below the middle of the 

 elytra, joints long, slender and from the third to eighth joints sub- 

 equal, last three joints deep brown. Prothorax about rectangular 

 with the sides nearly straight, a slightly scooped-out depression in 

 the basal half, sm'face shining, punctate along the base, pale yellow 

 with a pale reddish-bro\vn vitta on each side wider anieriorly but 

 not meeting in middle. Scutellum pale yellow. Elytra elongate, a 

 well-marked intrahumeral sulcus, densely and moderately coarsely 

 but shallowly punctate, pale yellow, a few hairs at apex. Body 

 beneath entu-ely pale yellow, the front tibiae thickened and middle 

 tibiae notched near the apex in the male. Claws bifid. Length 

 4.5-5 mm.; width 1.8-2 mm. 



Type, male, and 2 paratypes, USNM 66857, from Mr. Peter's 

 Hall, 2 miles from Georgetown, British Guiana, Sept. 22, 1918, col- 

 lected by Harold Morrison, 



Remarks: This is another species with bifid claws but strongly re- 

 sembling the Trichobrotica sexplagiata group with notched middle 

 tibiae in the male and similar shape and markings except that the 

 elytra are entirely pale. 



Ectmesopus rhabdotus, new species 



Figure 32 



About 3 mm. in length, oblong oval, shining, the antennae in the 

 male mth the tenth joint wider than the rest and the middle tibiae 

 excised; pale yellow brown with the occiput of the head dark, the 

 prothorax Avith a piceous lateral vitta on either side, elytra shining 

 with a blue-violet luster, tibiae in the apical half deeper brown. 



Head smoothly rounded over the occiput with fine punctures over 

 the rather indistinct frontal tubercles, a narrow carina, pale yellow 

 with the occiput of the head having a darkened area behmd the eyes 

 and the tip of the mouthparts also dark. Antennae in the male with 

 joints eight to ten gradually thickening, the tenth joint the widest, 

 basal and terminal joints pale yellow brown, the remainder gradually 

 deepening in color to the tenth which is piceous. Prothorax a little 

 wider than long, with nearly straight sides, disc smooth and without 

 depressions, shining, impunctate, pale yellow brown with a piceous 

 vitta extending to margin and nearly the length of the pronotum on 

 each side. Scutelliun brown. Elytra blue violet, shining, in the one 

 specimen examined the elytra much wrinkled, the specimen being 

 immature. Body beneath entirely pale, the legs pale with the apical 

 half of tibiae brown. Length 2.8 mm.; width 1.2 mm. 



Type, male, USNM 66855, collected at Bahia Honda, Cuba, on 

 June 1-3, by H. F. Wickham. 



