18 MALACODERMATA. 
rarely “break joint; ” but.where they do so the reticulation is “ honeycomb ”-shaped. 
This naturally takes place at the apex of the elytron. This description of the sculpture 
will in a general way apply to all the other species of the genus known to me, and will 
therefore only be referred to when any difference presents itself. The thorax is also of 
the same structure in other species ; that is to say, the front and each side are prominent 
in the middle, the hind angles acute and produced, the base bisinuate. 
Only three specimens, all females, have been found. 
2. Cenia scapularis. (Tab. I. fig. 23, 9.) 
Cenia scapularis, Newman, Ent. Mag. v. p. 881’; C. O. Waterh. Ill. Typ. Col. B. M. i. p. 23, 
t. vi. f. 67. 
Hab. Nort America! ?.—Muextco, Oaxaca (Sallé); GuatTemaua, Capetillo, Purula 
(Champion). 
This agrees sufficiently with the figure of Newman’s type given by Mr. C. Waterhouse, 
as well as with his description, except that the thorax has the sides broadly yellow. On 
what grounds it is given as a synonym of C. dimidiata (Fabr.) by Lacordaire, Genera 
Col. iv. p. 299, and in the Munich Catalogue, I am not aware. The Fabrician de- 
scription would apply better to the next species. The central nervure ‘of the three 
intermediate between the discoidal and humeral, is only slightly raised at the base. 
The male of this species is smaller, and has the flabellate branches of the antenne 
much finer at their base, and longer than those of the female. 
3. Cenia sinuata. 
Cenia sinuata, Kirsch, Mittheilungen aus dem kon. zool. Mus. Dresd. 
Nigra, prothoracis lateribus elytrorumque dimidio basali flavis, elytris sutura anguste et circa scutellum nigris. 
Long. 10-15 millim. ¢ 9. 
Mas minor, antennis flabellato-pectinatis. 
Femina antennis articulis latioribus flabellatis. 
Hab. Mexico, Oaxaca, Cordova, Cosamaloapam (Sallé); Guatemata (Sallé), var. 
sutura concolori; Nicaragua, Chontales (Janson). 
4, Cxnia interrupta. (Tab. I. fig. 22.) 
Nigra, prothoracis lateribus fasciaque elytrorum, ad suturam et in medio interrupta, flavis, antennis maris longe 
flabellatis, angulis posticis thoracis acute productis. Long. 13 millim. ¢ 9. 
Mas antennis longe flabellatis, ramis articulis triplo fere longioribus. 
Femina antennarum articulis basi latioribus compressis, interne flabellatis. 
Hab. Guatemata (Sallé, 2 ), San Gerdénimo (Champion, ¢ ). 
Only two specimens of this very elegant insect have been seen by me. The thorax 
has the sides and front very prominent, the disk strongly carinate; the hind angles are 
more acutely produced than in either of the other species; the base has a small notch 
where the carina terminates. 
