16 MALACODERMATA. 
little infuscate round the scutellum, which is black. The black patch is not so wide 
either at the suture or outer margin as in the centre. The abdomen is occasionally 
yellow in its centre to near its apex. Very few specimens have yet been sent. 
94. Calopteron miniatum. 
Nigrum, prothoracis lateribus elytrisque miniatis ; his lineis quatuor, tertia subobsoleta, sutura basi nigricante. 
Long. 10 millim. 9°. 
Hab. Costa Rica, Rio Sucio, Caché (Rogers). 
The thorax has the sides evenly narrowed to the front in the female. In a specimen 
which is probably the male the sides are subsinuate. The body is wholly black, the 
antenne a little acutely serrate; the sides of the thorax and elytra vermilion-red, with 
the exception of the suture for about one quarter at the base. 
25. Calopteron matutinum. (Tab. II. fig. 7.) 
Nigrum, prothoracis lateribus et elytrorum triente basali (sutura excepta) late ferrugineis; elytris lineis 
quatuor elevatis, tertia obsolescente ; antennis latis, utriusque sexus serratis. ¢ 9. Long. 5-12 millim. 
Mas multo minor, segmento penultimo exciso. 
Femina major, segmento apicali in medio diviso. 
Hab. Muxtco, Toxpam (Sallé); Guatemata, Cubilguitz, Cahabon, Chiacam, La Tinta, 
San Juan (Champion). : 
This and the two following species present an instance of almost complete similarity 
in colouring and form. The fowr nervures will distinguish the present one from 
C. tricostatum, the black suture from C. difficile. 
The thorax has the carina divided from the middle to the base, which, where it ter- 
minates, is divided by a fineincision. The form of the thorax is trapezoidal, with acute 
hinder angles. 
The specimen figured is from La Tinta, the department of Vera Paz. 
26. Calopteron difficile. 
Nigrum, prothorace (vitta mediana excepta) elytrorumque dimidio basali flavis ; elytris lineis quatuor elevatis, 
tertia minus distincta, areolis irregularibus, lineis transversis haud rugosis; antennis serratis. oQ. 
Long. 5-12 millim. 
Mas multo minor, segmento penultimo exciso. 
Femina major. 
Hab. Guatemata, Teleman (Champion); Nicaragua, Chontales (Janson). 
Closely allied to C. matutinum; it, however, differs, not only in colour (being 
rather yellow than rusty red) and in not having the basal part of the suture black, 
but the transverse divisions of the interstices are not so numerous nor so strongly 
raised. The difference in size of the sexes is sometimes very remarkable—a male of 
the smallest size being found still attached to a female of the largest, after their 
transmission to this country. 
