296 HEMIPTERA-HETEROPTERA. 
1. Bibaculus modestus, n. sp. (Tab. XXVIII. figg. 23, 24.) 
Creamy white ; eyes, apex of first joint and the second, third, and fourth joints of antenna, an irregular arcuated 
fascia to pronotum, two basal spots to scutellum, inner margins and apical half of clavus, an irregular 
macular transverse fascia to corium, lateral margins of cuneus, cellular margins of membrane, apices of 
femora, inner sides of tibiz, and apices of tarsi fuscous or black; second joint of antenne with a pale 
central annulation. 
Var. a. Differing by having all the black markings brownish and more or less obliterated. 
Long. 4 millim. 
Hab. GuatEMa.a, Senahu, Las Mercedes (Champion). 
MALA, gen. nov. 
Body elongate, the corium convexly ampliated. Head broad, smooth and shining, deflected a little in front of 
the eyes, which are contiguous to the angles of the pronotal collar. Pronotum strongly constricted and 
narrowed beyond middle, the basal half convexly gibbous and thickly punctate, the lateral margins convex 
to the anterior constriction, the posterior margin truncate and about twice as broad as anterior margin. 
Antenne long, slender, the first joint stoutest and longer than the head, second about half as long again 
as the first, third a little shorter than second and subequal in length with fourth. Scutellum somewhat 
tumid, with a basal depression. Corium very finely and obscurely punctate. Posterior tibie finely and 
‘obscurely setose. Rostrum not quite reaching the intermediate coxe. 
1. Mala unicolor, n. sp. (Tab. XXVI. fig. 21.) 
Very pale ochraceous ; eyes black ; outer margin of first joint and the third and fourth jomts of antennw and 
apices of, the tarsi fuscous ; the scutellum and abdomen are slightly darker or more ochraceous im hue ; 
membrane pale hyaline, the cellular margins pale brownish ; inner and outer margins of the cuneus pale 
brownish. 
Long. 6 millim. 
Hab. Guatemata, San Isidro (Champion). 
2. Mala ornata, n. sp. (Tab. XXVI. fig. 22.) 
Head, pronotum, scutellum, antennew, body beneath, and legs very pale ochraceous ; corium pale ereamy, talc- 
like and shining ; eyes, apex of the second joint of antennz, a subquadrate spot on each side of clavus 
near base, claval suture (excluding base and apex), and an oblique transverse fascia to coritum black ; 
membrane pale hyaline, the cellular margins pale fuscous ; outer margin of cuneus pale fuscous. 
Var. a. Differing from typical specimen by having the eyes ochraceous. 
Var. b. Eyes black, but the claval suture entirely ochraceous. 
Long. 6 millim. 
Hab. Panama, Bugaba, Volcan de Chiriqui 2000 to 3000 feet (Champion). 
Three specimens captured by Mr. Champion represent the three forms above 
described, and our only knowledge of the species, which may therefore be considered 
as of.a very variable character. 
SILIA, gen. nov. 
Body elongate, oblong, somewhat shining and sparingly pilose. Head broad at base and vertically deflexed, 
the eyes contiguous to the pronotal collar. Antenne pilose ; basal joint moderately incrassated, as long 
‘asthe head:; second joint almost twice the length of the first, its apex scarcely thickened, third and fourth 
very slender. Pronotum elongate, with a wide and convexly tumid anterior collar, preceded by a 
transverse constriction, the discal portion to base convexly tumid and coarsely punctate, the lateral angles 
