DEEECYRTA.— OBYSSUS. 69 



The head behind the ocelli is smooth and shining, below semiopaque, snagreened ; 

 front projecting, depressed in the centre. Mesonotum rugose, the lateral lobes in front 

 finely punctured, half shining. Scutellum finely punctured; at its apex it rises into a 

 sharp but not high peak, which is more perpendicular behind than before. The abdo- 

 men is shining, very finely punctured ; the basal segment is smooth, impunctate, but 

 with the edges all round more coarsely punctured than any other part. The transverse 

 basal nervure is received a little before the middle of the first cubital cellule and 

 slightly curved ; the first recurrent is also curved, but the opposite way, and is received 

 not far from the first transverse cubital ; the second recurrent nervure is received quite 

 close to the second transverse cubital ; the third cubital cellule is wider than second 

 and longer than fourth. The antennae are much shorter than abdomen, are rather 

 stout, and 2 3 -jointed. 



Allied to I), lugubris, Westw., from Brazil, but differing in neuration and punctuation. 



Fam. OKYSSIDiE. 



ORYSSUS. 



Oryssus, Latreille, Precis, p. Ill (1796) j Fabr. Ent. Syst. Suppl. p. 218 (1798). 



Fifteen species of this genus are known. Species are found in Europe, Abyssinia, 

 Natal, the Gold Coast, and Aru ; four have been recorded from North America, three 

 from Brazil, and one from Chili. 



1. Oryssus mexicanus. 



Oryssus mexicanus, Cresson, Proc. Amer. Ent. Soc. 1879, x. ; Trans, viii. p. 48, ? 1 . 

 Hab. Mexico 1 . 



2. OrySSUS nigricans. (Tab. III. figg. 14 ; 14 <z, spur on anterior leg ; 14 b, 



antenna.) 



Niger, breviter pubescens, punctulatus, troehanteribus tarsisque anticis testaceis ; alis fumatis, albo maculatis. 

 Long. 5 millim. 



Hab. Guatemala, Pantaleon 1700 feet (Champion). 



The third joint of the antennee is double the length of the fourth ; the last is as 

 long and much thicker than the two preceding. The head and thorax are coarsely 

 punctured ; the punctures on scutellum are wider apart ; the puncturing on the abdo- 

 men is much finer and closer; the segmental divisions are shining, impunctate. On 

 the inner side of the eyes are three large (comparatively) tubercles, and down the lower 

 part of the head in front is an ill-defined furrow: the base of stigma is white, and 

 from this white part runs a pear-shaped fascia to the bottom of the wing, this fascia 



