84 HETEROMERA. 
species, D. prona, Lec., from Florida, is, to judge from the description, perhaps nearest 
to D. mexicana. The present insect varies greatly in size. The three forms were all 
found at Chontales, and there can be little doubt that they are referable to one variable 
species. The ventral surface is densely and uniformly pubescent in both sexes. 
Labelled Serropalpus mexicanus, Chevr., in the Sallé collection. 
2. Dircxa piliventris. (Tab. IV. fig. 13, 3.) 
Elongate, subcylindrical, piceous-brown, subopaque, somewhat thickly clothed with brownish pubescence. 
Head densely and finely punctured; antenne (3) moderately long, not very slender, the joints much 
longer than broad, piceo-testaceous; maxillary palpi(¢) with the second and third joints strongly dilated 
internally and rather short, the apical joint securiform and about twice as long as the second; prothorax 
longer than broad, the sides narrowly margined from the base to the apex, gradually narrowed in front, 
and feebly rounded, the hind angles obtuse, the surface densely and finely punctured, with a shallow 
transverse impression in front of the scutellum, and an indistinct oblique one on each side at the base, the 
base only very feebly bisinuate; elytra with shallow longitudinal grooves, punctured at the base (and 
shoulders) like the prothorax, the punctuation becoming finer, shallower, and more scattered beyond the 
middle, the apices rounded; beneath finely and densely punctured and sparsely pubescent; prosternal 
episterna limited anteriorly by an oblique carina extending from the anterior edge of the prothorax to the 
anterior coxe, the latter with the lateral cavities completely closed ; legs ferruginous, the hinder tibie 
without transverse ridges; ventral segments 1-4 each with a broad, transverse, densely pubescent patch in 
the middle, the apical margin of the fifth feebly emarginate, and the anterior tarsi moderately dilated, in 
the male. 
Length 5% millim. (¢.) 
Hab. Panama, Volcan de Chiriqui 4000 feet (Champion). 
One male example. This small species is allied to D. vawdoweri (Muls.), an insect 
inhabiting Europe and North America, but is much smaller and has the upper surface 
more finely sculptured. The much more elongate apical joint to the maxillary palpi 
and the more widely separated middle coxe distinguish it from Xylita. 
3. Dircea liturata. 
Serropalpus quadrimaculatus, Say, in Long’s Second Exped. ii. p. 283 (1824) ; Complete Writings, 
i. p. 187; Hald. Journ. Acad. Phil. 1848, p. 98 (nec Llliger). 
Dircea liturata, Lec. List Col. N. Am. p. 66. 
Hypulus lituratus, Horn, Trans. Am. Ent. Soc. xv. p. 407. 
Hab. Norrn America, Canada to Virginia and Missouri !.—? Mexico (Sallé). 
There is a mutilated example of this species contained in the Sallé collection and 
labelled as from Mexico, without more definite locality. The species is therefore 
included in our list, though this southern habitat undoubtedly requires confirmation. 
** Prosternal episterna not limited anteriorly by an oblique keel; antenne very long and 
slender ; hinder tibie transversely ridged on their outer edge. 
4, Dircza longicornis, (Tab. IV. fig. 14, 3.) 
Very elongate, cylindrical, a little flattened above, dark brown, opaque, densely clothed with short ashy 
