23 
Species of exotic Hemipterous Insects. 
Thorax subconicus (8 a), in tres nodos transverse constrictus ; 
margine postico valde emarginato. 
Pedes 2 antici dilatati, subraptorii, femoribus crassis, tibiarnm 
apice (8 c) bispinoso, serieque setarum rigidarum armato, tarsis 
anticis compressis, (ut videtur 2-articulatis, articulo lmo bre- 
vissimo), ungue unico valido armatis. Pedes 4 postici graciles, 
simplices ; tarsis (ut videtur) 3-articulatis (8 d), articulo lmo 
brevissimo, 2do brevi tertioque longiori. 
Hemelytra (8 e) homogenea, nervis perpaucis crassis e basi ad api- 
cem extensis, in speciebus paullo discrepantibus, sed cellulam 
magnam centralem versus apicem hemelytrorum formantibus. 
Obs. — The very remarkable head, thorax, fore-legs and hemelytra 
distinguish these curious insects, not only from the remainder ot the 
extensive family of the Reduviidee, but also from every other Hemip- 
terous group. I am acquainted with four species; one from the 
West Indies, another from Bengal, the third imbedded in Gum 
Anime, and the fourth from Van Diemen’s Land, a remarkably 
wide range for a group like this, which, from the singularity of its 
structure, might be presumed to be very limited in the extent of 
its geographical distribution. 
Species 1. (Typus.) Enicoceplialus flavicollis. Plate II. fig. 8. 
Fuscus, an tennis pallidioribus ; thoracis lobis duobus anticis, pedi- 
bus omnibus, rostro, et rotula caput cum thorace connectenti 
flavis ; scutello nigro, antennarum articulo ultimo praecedenti 
paullo crassiori. 
Long. corp. lin. 2. 
Habitat in Insula Sancti Vincentii. Dom. Guilding. 
In Mus. Dom. Hope. 
Species 2. Enicoceplialus hasalis. 
Fusco-niger, antennarum articulo ultimo praecedenti fere graci- 
liori ; capitis lobo postico, rotulaque caput cum thorace con- 
nectenti obscure fulvescentibus ; hemelytris fuscis, basi fulvis, 
portione interna pallidiori ; pedibus fulvescentibus, femoribus 
in medio tibiisque versus apicem fuscis. 
Long. corp. lin. 3%. 
Habitat in Bengalia. In Mus. Dom. Flope. 
Species 3. Enicoceplialus fulvescens. 
Pallide fulvescens, oculis nigris, antennis (nisi articulis 1 et 4 et 
annulis rudimentalibus albidis), pedibus anticis thoracisque 
