AULECULA.—ALETHIA. ALT 
about two rows of exceedingly shallow fine punctures; beneath brownish, comparatively smooth, the 
sides of the metasternum with coarse, the fifth ventral segment with fine scattered, punctures, the ventral 
surface with shallow longitudinal wrinkles ; antenn ferruginous; legs rather stout, fusco-ferruginous. 
Length 10-11 millim.; breadth 4} millim. (92.) 
Hab. Mexico, Capulalpam (Sailé). 
Three female examples. In this insect, the male of which is unknown, the head and 
thorax are much broader than in the other species included in the genus, and the eyes 
are smaller and project very little laterally. The head is formed much as in the 
European Upinella aterrima, Muls. 
ALETHIA. 
Last joint of the labial palpi ovate, truncate in front; last joint of the maxillary palpi elongate-triangular, 
comparatively narrow (very narrow in <A. salle), the outer side the longest, or the apical and outer 
sides about equal; mandibles feebly bifid; antenne long or very long, filiform, varying in thickness, in 
some species very slender, the third joint as long as the fourth; eyes large or moderately large, not very 
widely separated ; prothorax small, more or less transverse, narrowly margined at the sides, the base very 
feebly bisinuate ; elytra much wider than the prothorax, long or very long, subparallel, confusedly punc- 
tured or very finely punctate-striate ; legs long and slender, the first joint of the hind tarsi long (in 
A. sallewi &c. very elongate); anterior and intermediate tarsi with the third and fourth joints very 
feebly and narrowly lobed beneath, the penultimate joint of the posterior tarsi simple or very feebly lobed ; 
anterior tibie slender, and in the male curving a little outwards towards the apex ; prosternum narrow ; 
body narrow, elongate, subparallel, more or less depressed, pubescent, winged. 
Several species from Mexico agree very well inter se in most of the above characters. 
All have much the facies of Allecula angustata and its allies, though differing in the 
less widened apical joint of the labial palpi. One or two bear a superficial resemblance 
to certain Longicornia, e. g. Leptwra, and one to various “ Cdemerides.” A. sallei 
may be taken as the type of the genus. <Alethia closely resembles the Madagascar 
genus Stenecula, Fairm., but differs in the smaller and more transverse eyes, slender 
legs, &c. In the males of the five species I have examined the lateral lobes of the last 
ventral segment are very similarly shaped, ?. ¢. curved inwards and with their apices 
approaching each other. 
1. Alethia sallewi. (Tab. XIX. figg. 5,3; 5a, labium; 56, maxillary palpus.) 
Elongate, narrow, depressed, subparallel, dull piceous-brown, the elytra rather more shining and lighter in tint, 
thickly clothed with short pubescence. Head very closely and rugosely punctured ; eyes rather small ; 
antenne (¢ ) very long and slender, fusco-ferruginous ; prothorax small, transverse, feebly convex, the sides 
almost straight or a little sinuate behind and gradually narrowing in front, the hind angles rectangular or 
subacute, the disc sometimes obsoletely canaliculate behind, the basal fove obsolete, the surface punc- 
tured like that of the head ; scutellum closely and finely punctured ; elytra very long, subparallel to beyond 
the middle, very much wider than the prothorax, depressed on the disc, the humeri rather swollen, the 
surface with shallow longitudinal grooves and very thickly, confusedly, and minutely punctured, the usual 
rows of punctures distinct at the extreme base only, the interstices feebly convex but flatter on the basal 
half of the disc; beneath closely and finely punctured ; legs fusco-ferruginous, very long and slender ; 
the tarsi very elongate and fully the length of the tibia, very feebly lobed beneath, the first joint of the 
posterior pair exceedingly long. 
Length 8-9 millim.; breadth 2? millim. (¢.) 
BIOL. CENTR.-AMER., Coleopt., Vol. IV. Pt. 1, October 1888. 3 HH 
