158 HEMIPTERA-HETEROPTERA. 
The remarkable insect from which the above characters are taken is perhaps nearest 
allied to Trepobates, Uhler (= Stephania, Buch. White). The greatly developed meso- 
notum, with te broad pleura extending forwards as far as the eyes, gives it a peculiar 
facies. The armature of the second and third joints of the antenne, and also that of 
the anterior femora, is probably a male-character. The hind femora, as in Trepobates 
and Metrobates, are very much longer than the intermediate femora. (In the unique 
example seen the intermediate tibie and tarsi are broken off.) In Bianchi’s arrange- 
ment of the Halobatini* it would come near Metrobates, Uhlerf, this genus having 
a similarly elongate basal joint to the antenne. 
1. Trepobatopsis denticornis, n.sp. (Tab. IX. figg. 26, ¢; 26a, antenna.) 
3. Black, opaque ; a broad sinuous stripe on the mesopleura, a stripe down the middle of the mesonotum, 
two spots on the metanctum, as well as the sides, the middle and sides of the dorsum of the abdomen, 
and the metapleura, grey: the head with two oblique ferruginous spots at the base; the pronotum with 
a rounded ochraceous spot in the centre; the under surface bluish-grey, the apex of the abdomen and a 
spot on the ante-coxal pieces of the mesopleura ferruginous or ochraceous; the first antennal joint at the 
base beneath, and the second joint to near the tip, ochraceous; above and beneath, the legs, and antenne 
clothed with short pubescence, the pubescence on the under surface whitish, the basal joint of the 
antenne with a few long projecting hairs beneath. Antenne: not very slender, joint 1 about three and 
one-half times as long as 2, 2 and 4 subequal in length, 3 shorter than 2, 4 fusiform; joint 2 armed with 
two, and 3 with four, blunt, downwardly projecting teeth at the apex beneath. Anterior femora armed 
with a stout projecting tooth on the lower edge a little beyond the middle. Terminal ventral segment 
deeply arcnate-emarginate at the apex. 
Length 33, breadth 2 millim. 
Hab. Mexico (Sallé, in Mus. Holm.). 
Fam. HENICOCEPHALIDE, 
HENICOCEPHALUS. 
Enicocephalus, Westwood, Trans. Ent. Soc. Lond. ii. p. 22 (1887) ; Stal, Rio Jan. Hemipt. p. 81 
(1858) ; Ashmead, Proc. Ent. Soc. Wash. ii. pp. 328, 329, 
Henicocephalus, Bergroth, Rev. d’Ent. viii. p. 319; xii. p. 155. 
Systelloderes, Blanchard, in Gay’s Hist. fis. y polit. de Chile, Zool. vii. p. 224 (1852). 
Oncylocotis, Stal, Ofv. Vet.-Ak. Férh. xii. p. 44 (1855). 
Stenopirates, Walker, Cat. Hemipt. Heteropt. vii. p. 189 (1873). 
Henschiella, Horvath, Rev. d’Ent. vii. p. 169 (1888). 
Dicephalus, Kirby, Journ. Linn. Soc., Zool. xxiv. p. 115 (1891). 
Hymenodectes, Uhler, Trans. Maryland Acad. Sci. 1892, p. — f. 
Hymenocoris, Uhler, loc. cit. p. —. 
* Ann. Mus. Zool. St. Pétersb. 1896, p. 71. 
+ Since these pages have been in type an apterous specimen of M. hesperius has been received from 
Prof. Uhler. It is very like P. denticornis, but has much narrower mesopleura, the anterior legs differently 
formed, the head less emarginate behind, &c. 
+ I have not been able to see a copy of this work. 
