EUTHRYPTUS.—ERSACHUS. 683 
This remarkable and very distinct species is represented by a single example. 
Though it has entirely lost its legs, the insect is otherwise in a good state of 
preservation, and I have no hesitation in describing it *. ‘The antenne are longer 
than in any other described species of the subfamily; they are very fragile, slightly 
thicker towards the extremity, setose, the terminal joint subacuminate, twice as long 
as broad. ‘The head bears on each side a longitudinal groove running backwards from 
the front of the eye, and diverging from the eye so as to mark off a triangle limited 
by it, the side of the eye, and the anterior margin of the thorax. The eye is margined 
supero-internally. The thorax is greatly narrowed to the front, extremely closely 
connected with the after-body, the outline of the two being perfectly continuous ; it is 
covered with fine, moderately numerous punctures, which would be very definite were 
it not for the hair. The punctures of the elytra are large and deep, very numerous, 
and arranged in an irregularly seriate fashion. 
ERSACHUS. 
Ersachus, Erichson, Ins, Deutschl. iii. p. 497 (1848). 
This genus was established by Erichson in a brief note, and since then seems to 
have entirely dropped. Lacordaire’s description is merely an extract from Erichson, 
and I have not found any further reference to Ersachus, nor have I ever seen any 
specimens in collections. If I am right in identifying the following species as belonging 
to Ersachus, Erichson was wrong in placing it in Limnichine, the species having none 
of the characters of that subfamily. The correct position appears to be near Edmis, in 
the Parnide. 
1. Ersachus erichsonianus, sp.n. (Tab. XX. fig. 6.) 
Brunneus, pube minutissima plumbea maculatim vestitus, antennis pedibusque testaceis ; sub pube, irregulariter 
sat fortiter punctatus. 
Long. 3, lat. 14 millim. 
Hab. Mexico, Jalapa (Flohr); Guaremata, San Gerénimo (Champion); Panama, 
Caldera (Champion). 
Basal two joints of the antenne thick, third very slender, 9-11 forming a slender 
feebly-differentiated club. Eyes very convex. Thorax short, very closely and perfectly 
applied to the base of the elytra, which is clasped by the attenuate hind angles ; 
abruptly narrowed to the front, and with the surface uneven, so that the back of the 
head is clasped by the middle of the front of the thorax. Scutellum almost equi- 
laterally triangular, densely clothed with minute plumbeous or silvery pile. Elytra 
variegated with spots of a similar pile. Under surface entirely covered with this 
minute down. 
* An allied form from Borneo in my collection, recently described by me under the name Caccothryptus 
compactus (Ent. Monthly Mag. XxXxviii. p. 63), has longer antenne than Z. trigonalis. 
48* 2 
