LEPTOCHIRUS. 735 
3. Leptochirus proteus. 
Leptochirus proteus, Fauv. Bull. Soc. Linn. Normand. ix. p. 16°; Notices ent. i. p. 127. 
Hab. Mexico (coll. Chevrolat +), Cordova (Sallé).—Souta Amsrica, Colombia ! ? (coll. 
Sharp), Brazil 12. 
I have seen only two examples of this species from our region; though considerably 
larger than the Colombian exponents, I cannot separate them by any other good 
characters. 
4, Leptochirus extimus. 
Nigerrimus, depressus, nitidissimus; mandibula sinistra dente superiore simplice, acuminato, dentibus duobus 
tenacibus, denteque magno molari cujus margine interno profunde emarginato. 
Long. 12 millim. 
Hab. Mexico, Toxpam, Tuxtla (Sal/é). 
Though very similar to L. proteus, this insect is readily distinguished by the different 
armature of the mandibles, and by the shorter antenne, thorax, and elytra. The two 
basal teeth of the left mandible are conjoined to form one very large molar tooth with 
emarginate inner margin, and there is no trace of the inner or hinder margin of the 
erect tooth being armed, as it is in all the examples I have seen of L. proteus. ‘The 
two median lobes of the vertex are not produced further forwards than the lateral 
lobes, and they are evidently on a higher plane than the posterior part of the forehead— 
thus distinguishing the species completely from L. mawillosus, which latter has, more- 
over, a longer thorax, and the horizontal lobe of the forehead deeply emarginate in the 
middle. There is much punctuation on the basal portions of the ventral segments in 
this species. 
I have seen only two examples of L. extimus; though I can detect no difference 
between them, one was labelled Z. mawillosus, and the other L. proteus, in Sallé’s 
collection. 
B. Spatio frontali obliquo, hawd fracto. 
5. Leptochirus molossus. (Tab. XIX. fig. 22.) 
Nigerrimus, depressus; abdomine segmentis ventralibus ad basin minus late rugulosis; mandibulis crassis, 
sinistra dentibus tribus tenacibus, denteque molari sat prominulo, elongato, margine interiore bisinuato, 
dextra dentibus tenacibus duobus, denteque molari maximo. 
Long. 14-18 millim. 
Hab. Mextco, Jalapa (Hoge), Tuxtla, Cordova (Sailé); Britisn Hoypuras, R. Sarstoon, 
R. Hondo, Belize (Blancaneaux); Guatuma.a, El Tumbador, Las Mercedes, San Isidro, 
Pantaleon, Mirandilla, Capetillo, San Gerdnimo, Teleman, Chacoj, San Juan in Vera 
Paz, Cubilguitz (Champion); Satvapor (Ulew); Nicaraeua, Chontales (Belt, Janson) ; 
Costa Rica, Irazu 6000 to 7000 feet, Cache (Rogers); Panama, Bugaba, Volcan de Chi- 
riqui 2500 to 4000 feet (Champion). | 
