48 RHYNCHOPHORA. 
middle being distinctly carinate ; the stria next the suture is distinctly punctate, though 
the punctures in it are much less coarse than elsewhere; the third interstice bears 
three short yellow marks—one basal, one apical, one post-median ; fourth interstice 
with a median short mark ; fifth and sixth interstices with small spots forming a geminate 
ante-median mark, fifth with a post-median mark, seventh also with a post-median spot, 
eighth with a post-humeral mark. ‘Tips of the elytra rounded, with scarcely a trace of 
lateral tooth. Head and metarostrum beneath with foveoles biseriately arranged. 
Four specimens. 
_ABRENTODES, gen. nov. 
Antenne mediocres. Rostrum parum elongatum, apice haud dilatato; antennis maris fere medianis. Caput 
pone oculos breve, subtus fissura tantum sat profunda a collo separatum. 
‘The insects I place in this genus may all of them be described as more or less inter- 
mediate between Rhaphirhynchus and the species of Episphales with abruptly defined 
neck, while making at the same time a decided approach to Brenthus, on account of 
the well-marked fissure by which the underside of the head is separated from the neck. 
‘This character separates the genus from Rhaphirhynchus, from which <Abrentodes is 
also distinguished by the shorter antenne. As these two characters were considered 
by Lacordaire of great importance, it is very difficult to place the genus satisfactorily in 
his classification. 4. auratus comes, however, very close to Rhaphirhynchus, and has 
longer antenne than the other species I assign to the genus. 
The species seem to be all extremely rare; they are perhaps the most difficult of the 
Brenthide of our region to recognize, and are altogether very puzzling insects. 
A. auratus and A. breviceps greatly resemble the less elongate Rhaphirhynchi, while 
A. robustus and A. suleipennis have rather the facies of small Episphales. 
1. Abrentodes auratus, sp. n. (Tab. IL. figg. 15, 2; 15a, head and 
rostrum, ¢ .) 
Minus elongatus, nitidus, auratus, prorostro antennisque nigris; pedibus piceis ; elytris Havo-signatis. 
Long. 9-10 millim. 
Hab. Guatemata, Coban (Conradt, Champion), Senahu and San Juan in Vera Paz 
(Champion). 
Var. Minor, niger, minus auratus. 
Long. 7 millim. 
Hab. Mrxico, Jalapa, Juquila (Hoge). 
This species has quite the facies of the less elongate forms of Rhaphirhynchus, but 
is remarkable from the extreme polish of the thorax. Antenne slightly longer in the 
male than in the female ; the three basal joints shining, the others pubescent. Rostrum 
of male armed and formed above as in Rhaphirhynchus, but shorter, very little broader 
towards the tip; beneath polished and terete, looking like the rostrum of a female 
