262 HETEROMERA. 
antenn ( 2 ) short, joints 5-10 moderately serrate, 9 and 10 subtransverse ; prothorax broadly emarginate 
in the middle behind; scutellum twice as broad as long, emarginate in the middle behind; elytra only 
about twice as long as the prothorax; pygidium (@) very short, rather broadly truncate at the apex; 
anterior and middle tarsi very slender, filiform ; middle tibie barely equalling in length joints 1-4 of the 
tarsi of the same pair of legs. 
Length to end of the elytra 84, to tip of the pygidium 33, millim.; breadth 13 millim. ( 9.) 
Hab. Panama, Bugaba (Champion). 
One female example. Very much smaller and relatively narrower than 7. spinifer ; 
the pygidium shorter and more obtuse in the female; the thorax and elytra differently 
marked. ‘The elytral markings are very sharply defined. 
b. Scutellum subquadrate, as long as broad, not emarginate behind; penultimate joints 
of the anterior and middle tarsi feebly dilated, spongy-pubescent beneath ; middle 
tibie as long as the tarsi of the same pair of legs; last joint of the masxillary . 
palpi elongate-triangular ; head very convex. 
3. Tomoxia fulviceps. (Tab. XI. fig. 10, ¢.) 
Elongate, black ; the head densely clothed with fulvous or golden-brown pubescence, the pubescence becoming 
darker in the middle and paler at the sides; the prothorax with a rather broad median vitta extending 
from the base to the apex, and widened in front, and an elongate-triangular mark or stripe on either side of 
it (extending from the base to beyond the middle), from which a short branch extends outwards, and meets 
an oblique stripe placed near the anterior margin, these markings for the greater part brownish-black, 
but becoming fulvous towards the anterior margin, the rest of the surface yellowish-cinereous-pubescent ; 
the elytra with interrupted lines of cinereous pubescence extending to about a fourth from the apex, the. 
apical fourth uniformly brown or fulvous-brown-pubescent, an oblique ill-defined brownish stripe extending 
from the shoulders downwards, the rest of the surface clothed with blackish pubescence. Head very 
convex, the eyes extending to the occiput ; palpi testaceous, the last joint of the maxillary pair elongate- 
triangular, its outer side concave, its inner side a little longer than the apical side; antenna ( ¢ ) testaceous, 
darker towards the apex, rather slender, joints 5-10 feebly serrate, longer than broad; prothorax rounded 
in the middle behind; scutellum quadrate, about as long as broad; elytra a little flattened on the dise, 
about two and a half times as long as the prothorax, the humeri somewhat swollen ; pygidium ( ¢) short, 
rather broadly truncate at the apex; beneath cinereous-pubescent, the pubescence on the hind coxe and on 
the last ventral segments yellowish or fulvous in colour; legs black, the knees and the base of the anterior 
femora obscure testaceous, the tibial spurs testaceous; anterior and middle tarsi with the third and fourth 
joints slightly dilated; middle tibie as long as the tarsi of the same pair of legs; posterior tibial spurs 
very long, the inner one much longer than the outer; the anterior femora and tibie (¢ ) slightly curved. 
Length to end of the elytra 53-64, to tip of the pygidium 63~73, millim.; breadth 21-23 millim. (<¢.) 
Hab. Mexico, Teapa in Tabasco (/. H. Smith); Nicaracua, Chontales (Belt). 
Three examples, all males. In its elytral markings this elegant insect somewhat 
approaches the North-American 7. lineella, Lec., but the latter has not the apical 
fourth of the elytra uniformly brown-pubescent, and also differs in numerous other 
particulars. 
4, Tomoxia interrupta. (Tab. XI. fig. 11.) 
Elongate, black ; the head densely clothed with golden-yellow-pubescence, a large dark brown patch in the 
middle extending to the base, the pubescence at the base between this spot and the eyes white; the 
