TESSEROCERUS. 115 
6. Prolongation of the scape very long, clavate . . . . . « + + + © + Spinola. 
Prolongation of the scape short, conical. . 2. 2. ee ee ee 
7. Postero-lateral angles of the elytra not prominent, rounded . . . .. . deeani. 
Postero-lateral angles of the elytra prominent, subangulate . . . ..+ . ericius. 
‘Division I. TEssEROCERI GENUINI. 
Tesseroceri genuini et T. clavati, Chapuis. 
Form more elongate; the groups ‘of punctures on the prothorax situate before the base; elytral interstices 
alternate throughout, not markedly flexed outwards posteriorly, the apical margin not explanate, the 
postero-lateral angles in the male produced into a spinous process; apex of the last ventral segment 
emarginate in the male. 
1. Tesserocerus spinole. 
Tesserocerus spinole, S ¢ (lege 2? &), Chap. Mon. Plat. p. 307, fig. 190°. 
Hab. Mexico (Sallé?). 
A typical example of the male from M. Sallé’s collection is the only one that we 
possess of this species. 
2. Tesserocerus dejeani. 
Tesserocerus dejeani, § @ (lege 2 3), Chap. Mon. Plat. p. 303, fig. 187°. 
Hab. Mexico}, San Andres Tuxtla (Sallé); Costa Rica, Caché (Rogers); GUATEMALA, 
Las Mercedes, Zapote (Champion); Nicaracua, Chontales (Janson); Panama, Bugaba, 
Volcan de Chiriqui (Champion).—CoLomBia}. 
Our series contains typical examples of both sexes from M. Sallé’s collection; one or 
two specimens only have been received from each locality south of Mexico. 
3. Tesserocerus ericius, sp.n. (Tab. V. figg. 1,3; 2,2.) 
Angustus, ferrugineus vel badius, prothorace parce subtiliter punctato, congerie punctorum parva. 
Mas. Fronte nitida, punctata, linea media impressa ; elytrorum interstitio 1° in spinam acutam, processui 
laterali longo subtruncato adzequantem producto, 3° brevius spinato ; depressione postica subverticali. 
Long. 5°2-5°3 millim. 
Fem. Fronte suboblonga, subconvexa, linea media impressa, pone marginem anticum fortiter punctata; 
elytrorum depressionis postice margine inferiore sinuato, angulo externo subrecto. 
Long. 5-6 millim. 
Slender and elongate, bright brown or ferruginous, the prothorax one-half longer than broad. 
Male. Frontal area somewhat convex, rather strongly punctured, the median sulcus well marked. Prothorax 
with a small cordiform patch of strigose punctures. Elytra infuscate behind, the 1st interstice produced 
into a long subacute spine, slightly divaricate from its fellow, and, owing to the nearly vertical plane of 
the posterior declivity, reaching as far back as the lateral processes ; the latter longer than broad, subtrun- 
cate, their inner border straight, the outer rounded; spinous processes of the 3rd and 5th interstices 
truncate and successively shorter, that of the 7th represented by a small nodule; declivity shining and 
impunctate. 
Female. Front somewhat oblong, subconvex, more finely punctured, except along the shining epistomal 
QQ 2 
