198 Mr. W. L. Distant on llomoptera. 



broad transverse fascia a little beyond base, and a spot near 

 apex of costal membrane, stramineous, apical third hyaline, 

 the venation fuscous towards apex and with a fuscous costal 

 suffusion before apex which readies middle of tegmen ; wings 

 with basal two thirds black, with two oblong upper basal 

 violaceous streaks and the reticulate veins on basal area of 

 the same colour, apical third hyaline, the venation fuscous ; 

 rostrum considerably passing posterior coxaj ; posterior tibite 

 witii four spines ; face with two curved central carinations oa 

 posterior half. 



Long., excl. tegm., 22 ram.; exp. tegm. G3 mm. 



JJab. Bolivia {J. Steinhach, Brit. Mus.). 



Matacosa, gen. no v. 



Head (including eyes) only a little narrower than anterior 

 margin of pronotum, vertex excavated, its anterior margin 

 broadly rounded, the marginal ridges very prominent j face 

 much as in Scarah's, but clypeus with a percurreut central 

 carination as in Domitia ; anterior tibiae longer than the 

 femora, posterior tibisB with four spines ; abdomen short, 

 about as long as space between apex of head and base of 

 cruciform elevation, with a distinct central longitudinal ridge, 

 the apical segment broadly truncate ; pronotum with a central 

 longitudinal ridge, its anterior margin broadly subtruncately 

 produced between the eyes, its posterior margin centrally 

 sinuate and with a central basal transverse ridge ; mesonotum 

 tricarinate, the lateral carinations anteriorly forked ; tegmina 

 more than twice but not three times as long as broad, with 

 reticulate veins over the whole surface; wings reticulately 

 veined except on basal area. 



Type, Al. miscella, Dist. {Domitia^). 

 This genus is somewhat interm 



genus is somewhat intermediate between Scaralis and 

 Domitia ; to the first it is allied by the length of the anterior 

 tibige, but differs by the narrower pronotum, the shorter and 

 broader tegmina, and by the percurrent carination to the 

 clypeus. 



Matacosa miscella. 



Dotnitiii? jniscelld, Dist. Biol. Ceiitr.-Aui., Eliyuch. Horn, i p. 33, 

 t. V. tig. 7 « (^1887). 



Genus Jamaicastks. 



Afr. iv. p. 138 (1806), uoi 

 ntomologist, xxxiii. p. 'Jii 



Type, J. consfillata, Guer. {Li/stra, Poiocera). 



Dotnitia, Still, Horn. Afr. iv. p. 138 (1806), uom. pra?occ. 

 Jamnicades, Kirk. Entomologist, xxxiii. p. l'43 (1900), n. noni. 



