LAGOCHIRUS. 145 
1. Lagochirus araneiformis. 
Cerambyx araneiformis, Linn, Syst. Nat. ed. xii. p. 625; Drury, Ins. ii. p. 66, t. 35. f. 4 (index). 
Acanthoderus araneiformis, Jacquelin Duval, Sagra, Hist. Cuba, An. Art. p. 271, t. 11. f. 2%, 
Lagocheirus araneiformis, Bates, Trans. Ent. Soc. 1872, p. 2097. 
Hab. Mexico, Misantla (Hége); BrittsH Honpuras, river Sarstoon, Belize (Blan- 
caneaur); GUATEMALA, Capetillo, San Gerénimo, San Juan, Vera Paz (Champion) ; 
Nicaragua? (Belt, Janson); Costa Rica, Irazu (Rogers)—West Inpies!; Sourn 
AMERICA, Guiana, Amazons; Oceania, Tahiti, Sandwich Islands. 
2. Lagochirus obsoletus. 
Lagocheirus obsoletus, Thomson, Classif. Long. p. 101; Bates, Trans. Ent. Soc. 1874, p. 229°. 
Hab. Mruxico’, Cordova (Sallé) ; Nicaragua, Chontales (Belt?). 
According to a specimen in M. Sallé’s collection, which is evidently correctly named, 
this species differs from L. araneiformis, not only by the dark transverse markings of 
the elytra being obsolete, but by the antenne being ringed with pale ashy, joints 3 to 6 
being biannulate ; the whole upper surface is also minutely punctured, and the apex of 
the elytra more sharply truncated. Mexican examples of £. araneiformis, especially 
those of small size, have a tendency towards ringed antenne. A male specimen taken 
by Mr. Belt differs from the above-mentioned Mexican example in being less punctured 
towards the apex of the elytra, and connects the species with the L. longipennis. 
8. Lagochirus binumeratus. (Tab. XI. fig. 11.) 
Lagocheirus binumeratus, Thomson, Classif. Long. p. 9'; Bates, Trans. Ent. Soc. 1872, p. 210”. 
Lagocheirus v-album, Bates, Trans. Ent. Soc. 1869, p. 386. 
Hab. Mexico!, Toxpam (Sallé), Misantla (Hoge); British Honpuras, Belize (Blan- 
caneaux) ; Nicaragua, Chontales (Belt?, Janson). 
The specimen figured is from Chontales. 
4. Lagochirus longipennis. 
L. obsoleto similis, at differt elytris longioribus et parallelis: oblongus, cinereo-fuscus, thorace lineis abbreviatis 
duabus posticis elytrisque macula laterali nigro-fuscis velutinis ; antennis fuscis, articulis 3°-6™ griseo bi- 
annulatis, 7°-11™ medio uniannulatis ; thorace obtuse tuberoso, punctato; elytris haud profunde (apicem 
versus obsolete) punctulatis, costis brevissime (versus basin altius) nigro-penicillatis, lineis transversis 
undulatis fuscis duabus posticis vix conspicuis; tarsis griseo-fuscis. 
Long. 74-8} lin. ¢. 
Hab. British Honpuras, river Sarstoon (Blancaneaux); Guatumata, Capetillo 
(Champion). 
Differs from L. obsoletus conspicuously by its much more elongated elytra; in colour, 
but especially in the almost obliterated dark and light transverse markings of the poste- 
rior part of the elytra, the two species agree, differing thus from nearly all their con- 
geners. I have seen only males of either species. ‘The tubers of the thorax, both 
dorsal and lateral, are obtuse. 
BIOL. CENT.-AMER., Coleopt., Vol. V., October 1880. u 
