LYCAMBES. 105 
Lycambes is readily distinguished from the two preceding genera by the moderate 
elevation of the mesosternum and metasternum. This raised portion is somewhat 
triangular, with the basal angles on the metasternum produced into acute lobes. Of 
four recorded species, one is peculiar to Central America, two to the Antilles, and one 
to Brazil. 
1. Lycambes varicolor. (Tab. XI. figg. 1,2¢,32.) 
Lycamées varicolor, Stal, Stett. ent. Zeit. xxiii. p. 278. 120'; En. Hem. i. p. 128. 4. 
Archimerus acutiusculus, Walk. Cat. Het. iv. p. 64. 16°. 
Archimerus guttiventris, Walk. Cat. Het. iv. p. 65. 18°. 
Hirilcus collaris, Walk. Cat. Het. iv. p. 73. 6*. 
Hab. Mexico1, Orizaba?, Oaxaca?4; British Honpuras, Belize (Blancaneauz) ; 
GuateMaLA, La Tinta, Panima, Panzos, San Joaquin (Champion); Costa Rica (coll. 
Dist.). 
This is a protean species in coloration. Stal! thus diagnosed the varietal forms he 
had observed in Mexican specimens, which seem to apply somewhat correctly to all the 
Central-American forms which we have received :— 
Var. a. 
Testaceo-flavescens, anastomosi venarum corii nigra; femoribus extus infuscatis; serie laterali macularum 
levium straminearum in disco ventris. 
This variety includes the form described by Walker under the name of A. acutiusculus 
(female, not male, as stated), and also the two male and female Guatemalan specimens 
figured (Tab. XI. figg. 2 & 3), which have the under surface of the abdomen pale and 
unicolorous. The posterior tibiee of the male are more or less fuscous at base. In all 
the specimens received from Guatemala the colour of the upper surface is pale green, 
more or less shaded with dull testaceous. 
Var. 0. 
Ut var. a, sed obscurior, thoracis macula media, scutello maculisque lateralibus pectoris interdum in vittam con- 
fluentibus, stramineis. 
This variety has also been received from Guatemala, and is the form described by 
Walker as H. collaris. | 
Var. ¢. 
Nigro-fuscus, macula discoidali thoracis maculisque ventris stramineis ; hemelytris fusco-lividis. 
This is the variety figured (Tab. XI. fig. 1), and is a Mexican specimen in the collection 
of Dr. Signoret. It is also the form described by Walker under the name of A. gutti- 
ventris, and is represented by a Costa-Rican specimen in my own collection. 
The majority of the specimens I have examined, especially those from Guatemala, 
appertain to the form var.a. This 1 imagine to be the original or dominant facies of 
BIOL. CENT.-AMER., Rhynch., April 1881. 14 
