208 



Dr. Guy A. K. Marshall on 



the ocular )nargins rather deejily impressed above and in front. 

 Rostrum longer than the basal width, pai'allel-sided in the basal 

 half and strongly dilated at the apex; the dorsum with a very 

 broad median furrow in the basal half, the ridges on each side of 

 it bearing a faint longitudinal impression, and the interantennal 

 space with a transverse arcuate impression within the usual depressed 

 area. Antennae with the scape exceeding the eye, gradually clavate, 

 bearing fine recumbent hair-scales and sparse suberect pale setae; 

 the joints of the funicle in order of length : 2, 1, 3, 4, (5, 6), 7, the 

 apical joints pyriform. Prolhorax as long as broad, parallel- sided 

 from the base to beyond the middle and thence gradually narrowed 

 to the apex; the dorsum occupied by three broad longitudinal 

 impressions, all rugosely scrobiculate, the median one being broader 

 than the others, but narrowed in front, which the latei'al ones are 

 not; the carinae dividing these impressions uneven and undulating; 



Fig. 4. — Exorides equicaiulatus, sp. n. 



the anterior margin very shallowly tj'isinuate dorsall}^, with a small 

 lateral lobe belov/ the eye, and the gular margin i-ather deeplj^ 

 sinuate. Elytra oblong-ovate, the sides nearly parallel, but shallowly 

 sinuate just behind the shoulders, the apices jointly rounded, and 

 the dorsal outline quite flat from the base to the declivity; the 

 basal margin markedly sinuate between the callus at the base of 

 interval 3 and the external angle; the whole surface coarsely and 

 rather irregularly reticulate, interval 3 slightly raised but indefinite, 

 interval 4 irregularly raised for a short distance behind the middle, 

 and interval 7 forming a prominent sharp cai'ina ; at the summit of 

 the declivity two large contiguous tubercles, from which in the 

 type projects horizontally backwards an extraordinary growth 

 forming a dense tuft of blackish browTi filaments like a bushy 

 horse's tail. Legs : tibiae not denticulate internally, the hind pair 

 not mucronate ; second joint of front tarsi about as long as broad. 

 Length, 16 mm. ; breadth, 6-5 mm. 



Ecuador : Quito. 

 Described from a single male. 



