CASTOLUS. 279 
Var. The clavus and corium, and sometimes the head above, the cylindrical basal portion excepted, black or 
fuscous. (¢ 9.) 
Hab. Mexico, Temax in North Yucatan (Gawmer); Guatemata, Cubilguitz in Vera 
Paz (Champion). 
Amongst our long series of this species there are three specimens only of the dark 
variety. ‘The males have the third antennal joint thickened to about the middle, and 
the terminal genital segment emarginate at the apex and armed with a long, slender, 
upwardly curved spine. A specimen from Atoyac is figured. 
2. Castolus tricolor, n. sp. (Tab. XVII. fig. 4, 3.) 
Stramineous or ochraceous, shining, sparsely pubescent; the head, the cylindrical basal portion excepted, partly 
or almost entirely black above ; the pronotum with the posterior lobe black, the anterior and hind margins 
excepted ; the elytra with a common transverse black fascia some distance below the base, the corium 
thence to the apex sanguineous, the membrane subhyaline; the abdomen with the dorsal segments, the 
connexivum, and the sides and apex of the venter, sanguineous, the dorsal segments 1-5 more or less 
suffused with black in the middle, the ventral segments with narrow transverse black fasciz ; the antenne 
piceous or black, with joints 3 and 4 paler; the legs piceous or black, with the intermediate and hind 
femora partly or entirely stramineous to near the apex, the intermediate femora sometimes with a faint 
median ring only. Head much narrowed behind, armed with a short conical tubercle on each side before 
the eyes, the latter large and prominent in the male, smaller in the female; antenne with joint 1 slightly 
longer than 3, 2 short, 4 longer than 2. Pronotum a little longer than the head, with the lateral angles 
rounded, and the anterior angles obtuse ; the anterior lobe smooth, sulcate down the middle, the posterior 
lobe with two short anteriorly converging carine on the disc in front. Elytra extending far beyond 
the abdomen. 
¢d. Antennex with joint 3 thickened to near the middle. Last genital segment armed with a long filiform 
spine at the apex. 
Length (to apex of the elytra) 103-15, breadth 2/-34 millim. (¢ Q.) 
Hab. Mexico, Teapa in Tabasco (H. H. Smith); British Honburas (Blancaneaua) ; 
GuatemaLa, Las Mercedes, Cerro Zunil, Zapote, Capetillo (Champion); Panama, Volcan 
de Chiriqui, Caldera, Tolé (Champion). 
Found in plenty in Guatemala, sparingly elsewhere. This very distinct species, 
which appears to have been unknown to Stal, is a close ally of C. plagiaticollis, but 
differs from it in the coloration of the elytra, and in having much larger eyes in the 
male. A specimen from Teapa is figured. 7 
3. Castolus trinotatus. (Tab. XVII. fig. 5, 2.) 
Spinda trinotata, Stal, Ofv. Vet.-Ak. Forh. 1866, p. 297 (2)’. 
Castolus (Spinda) trinotatus, Stal, Enum. Hemipt. ii. p. 80’. 
_ Hab. Mexico (Mus. Holm. 1 *). 
Allied to C. plagiaticollis and C. tricolor, but with a short tooth at the lateral angles 
of the pronotum and very differently coloured. The type is figured. 
