1872.1 151 



In the present Bpecics, the space between the sides of the mentum 

 and the mandibles is somewhat wider, and the apical notch shallower, 

 than in asidioides ; the antenna? more nearly approach those of JPtero- 

 lasia than Polpogenia, but joints 4 — 9, being shorter and stouter, 

 appear siib-moniliform, and joint 9 is shorter instead of (as in Ptero- 

 lasia) longer than 10. In the short, compact, cylindrical tarsi it 

 differs from both Polypogenia and Pterolasia, agreeing, in this respect, 

 more nearly with Pachyscelis. 



MESOTEETIS, nov. gen. {Ulomides,Jj?,Q.). 



Mentum trapezoidal, convex down the median line ; last joint of labial palpi 

 elongate-oval ; the apex slightly obliquely truncated ; that of the maxillary large, 

 moderately securiform ; mandibles bifid at the extremity ; labrum transverse, emar- 

 ginate in front ; epistoma bent dovra in front, rapidly widened behind, arcuate- 

 emarginate anteriorly, the fore angles rounded, the suture indistinct ; antennary 

 orbits small, not prominent, oblique ; eyes large, prominent, free, lateral, entire, 

 slightly transverse ; antennae longer than in Tribolium or PMora, having a tri- 

 articidate club, joint 3 longer than 2 or 4, 4 — 8 sub-equal or very gradually wider, 

 9 and 10 much larger and wider, sub -triangular, 11 large, sub-globidar ; prothoi-ax 

 wider than long, widest before the middle, thence slightly contracted to the base, 

 anterior angles rounded, slightly arcuately emarginate at apex, the base slightly 

 sinuously rounded, hind angles forming obtuse angles, finely margined at the base 

 and for one-third at each side of the apex, the sides more strongly margined ; scu- 

 tellum large, rounded behind ; elytra elongate, very gradually widened to beyond 

 the middle, apex rounded, base slightly arcuately emarginate, wider than the pro- 

 thorax at its base, shoulders somewhat prominent, humeral angle roimded, sides 

 margined, cpipleural fold complete behind, nearly as broad at apex as at the middle ; 

 prosternal process gradually expanding behind, the end broadly truncated : meso- 

 sternum strongly declivous ; middle coxa? closely enclosed by the meso- and metas- 

 terna, the latter normal ; femora compressed, elongate-oval, attenuate at base ; 

 tibiae sub-linear, outer margin entire, outer apical angle not prominent ; tarsi 

 dilated, pulvillate beneath, the penultimate joint suh-hilohed ^ inter-coxal process 

 narrowly rounded at apex. 



A remarkable species, which, by the form, &c., of its tarsi, stands 

 in the same relation to the Triboliides that AJegoria does to the tr^ue 

 Tllomides, and should form a new " groupe " in the tribe ; but, as these 

 secondary groups are already numerous, I propose placing the present 

 genus with the Triholiides, and Alegoria with the " Ulomides vraies ;^' 

 the form of the head, mentum, antennae, tibiae, &c., will lend themselves 

 to this arrangement ; and, really, Mcsotretls only differs from the 

 Triboliides, and Alegoria from the true Tllomides, by the structure of 

 the tarsi. 



M. FEKRUaiNEA, s/>. n. 



Elongate, moderately convex; subiiitid, yellowish ferruginous, with Ihe sulurc 



