LYCOSTOMUS. 5 
These, however, differ in the following particulars from females of that species :—In 
large specimens the thorax (though variable) is wider; the black portion of the disk is 
wider at the base; the colour of the thorax and elytra is quite different, being a dirty 
horn-colour. The apex of the abdomen is pale. 
3. Lycostomus sordidus. (Tab. I. fig. 6, 2.) 
Nigro-piceus, subnitidus, prothoracis lateribus elytrorumque margine humerali testaceis. 
Mas elytris vix ampliatis, segmento septimo ventrali haud exciso, tibiis omnibus basi fortiter curvatis. 
Long. 14 millim., lat. 7 millim. 
Femina elytris angustioribus, tibiis leviter curvatis. 
flab. Guatemata, Calderas (Champion, 3 2); Nicaracua, Chontales (Janson, 2 ); 
Costa Rica, Volcan de Irazu (Rogers, 2, var.). 
A Calderas specimen is figured. 
4. Lycostomus championi. (Tab. I. fig. 7, 2.) 
Nigro-piceus, nitidus, prothoracis limbo elytrisque vitta humerali lata, ante apicem desinente, testaceis. 
Mas elytris dilutioribus, infra humeros modice ampliatis ; femoribus (apicibus exceptis) et abdominis margine 
rufo-testaceis, tibiis basi fortiter curvatis. Long. 10 millim., lat. 6 millim. 
Femina elytris minus ampliatis, femoribus nigris vel basi extrema testaceis, abdomine margine apicali piceo. 
Long. 11-12 millim., lat. 5-6 millim. 
Hab. GuaTEMALA, Duefias, Capetillo (Champion). 
A long series of specimens of this species were sent by Mr. Champion. It varies some- 
what in the extent of the yellow marginal stripe; in some few cases the entire base of 
the elytra is yellow. It is allied to ZL. sordidus; but the difference of colour in the 
The seventh abdominal 
segment of the male is not acutely excised, but simply with a very shallow wide emargi- 
nation, and has, as well as the sixth, a lancet-shaped lobe at the hind angles. 
femora of the sexes will prevent their being confounded. 
‘ peci gured is from Duefas. 
5. Lycostomus deustus. 
Nigro-fumosus, prothorace elytrisque ad basin late sed indeterminate sordide testaceis, his subparallelis, 
infra humeros paulo ampliatis, illo disco plus minusve infuscato, subquadrato, lateribus sinuatis. ¢ 9. 
Long. 9-11 millim. 
Mas tibiis intermediis et posticis fortiter curvatis. 
Hab. Panama, Matachin (Thieme). 
A beautiful series of specimens of this distinct species was obtained by Dr. O. Thieme, 
and obligingly placed at my disposal by M. R. Oberthiir. In form it resembles species of 
the Z. loripes group. The males are not usually more widened behind than the females, 
The rostrum is of moderate length. The thorax has the sides converging only slightly 
till they meet the sinuate front. The yellow basal portion of the elytra shades off 
gradually into the smoky-black opaque apical part, which is more than half of their 
whole length. | 
