204. LONGICORNIA. 
This species approaches very close to Phytecia, and bridges over perfectly the interval 
which separates the two genera. 
4, Mecas laminata. 
Elongata, subgracilis, nigra, subtiliter cinereo-pubescens, vertice et pronoto rufis, nitidis, hoc disco trituber- 
culato, maculaque utrinque laterali nigra; antennis nigris, apicem versus cinereis ; scutello rufo; elytris 
dorso planatis sublineatim punctulatis, epipleuris nigrescentibus, apice obtusissime rotundatis ; ¢ seg- 
mentum apicale ventrale minus profunde concavum, fundo linea impressa. 
Variat capite toto rufo, thorace absque guttis nigris margineque basali elytrorum rufo. 
Long. 54-63 lin. ¢ Q. 
Hab. Mexico, Vera Cruz, Orizaba (Sallé); GuatemaLa, Zapote (Champion). 
5. Mecas obereoides. (Dylobolus obereoides, Tab. XV. fig. 16.) 
M. laminate similis, differt vertice et pronoto melleo-flavis, illo puncto mediano, hoc punctis tribus nigris. 
Elongata, subgracilis, fronte et corpore subtus dense subtiliter cinereo-pubescentibus ; elytris nigris, 
margine laterali solum cinereo, apice obtusissime rotundatis ; thorace nitido, dorso tuberculato punctis 
nigris transversim positis. 
Long. 54-64 lin. 
Hab. Mzxico, Cuernavaca (Sal/é). 
6. Mecas laticeps. 
Elongata, subgracilis, capite crassiore; fusco-nigra, pube tenui fusco-cinerea vestita, capite thoraceque melleo- 
fulvis opacis, hoc pube cinereo-flava vittatim variegato; capite post oculos valde dilatato ibique nigro; 
thorace breviter cylindrico, medio utrinque paullo rotundato, antice et postice leviter constricto; elytris 
ante apicem paullulum dilatatis, crebre usque ad apicem punctulatis, cinereo-nigris, margine laterali 
densius cinereo-pubescente, apice juxta suturam oblique truncatis ; ventre unicolori; ¢ segmentum apicale 
ventrale late profunde foveatum. 
Long. 6-63 lin. ¢ @. 
Hab. Mexico, Guanajuato (Sallé). 
This species was ticketed Saperda immaculicollis by Sturm. I cannot adopt the 
specific name, as the thorax has a more or less variegated appearance, according to the 
density of the pale pubescent stripes, and the interspaces are sometimes partially fuscous. 
The abdomen is unicolorous dark cinereous in both sexes, a character which distinguishes 
the species from the two following. 
7. Mecas mexicana. 
M. laticipita proxime affinis et simillima, sed differt ventris segmentis tribus apicalibus utrinque late flavo- 
cinereis (ut in Lampyridibus). Valde elongata, nigra, pube tenui fusco-cinerea vestita, capite thoraceque 
melleo-fulvis, opacis, hoc dilutius fulvo vittato ; capite post oculos tumido ibique quam thorax latiore et 
nigro vittato; thorace breviter cylindrico, medio utrinque paullo rotundato, antice et postice leviter con- 
stricto ; elytris subtiliter punctatis cinereo-nigris, sutura concolori, marginibus lateralibus (plica epipleurali) 
apice excepto cinereo-fulvis; subtus cinereo-nigra (prothorace plerumque fulvo), ventris segmentis tribus 
apicalibus densissime cinereo-flavo pubescentibus, sericeis, medio tantum nigris. 
Long. 63-7 lin. @. 
Hab. Mexico, Etla, Izucar (Saldé). 
According to M. Sallé, this is the Oberea mexicana of Dejean’s Catalogue. 
