— 476 — 



Adelotettix obscurus, sp. n. 



Quite closely related to Adelotettix (Ahilal) collaris В r ii n e r 

 from Yucatan '), but much darker colored, without the diisky band 

 near the front margin of the pronotum, and with only seven instead 

 of eight spines on the outer margin of tlie hind tihiae. The présent 

 species also has the head, thorax and first altdominal segment much 

 more profoundly punctulate than in the species to which it liasjiist 

 been compared. 



Front, lower edges of cheeks, pronotum, pleura and meso- and 

 metasternum profoundly and closely punctulate, thereby giving to the 

 surface a strongly rugose appearance. Vertex about three-fourths as 

 Wide as the fi'ontal costa between the antennae, the fastigium very 

 gently depressed, flattened on disk but provided at the rear with a 

 little pit-like sulcation and near the front edge with a slight median 

 carina, separated from the frontal costa by a raised transverse 

 carina that is much highest at middle; lateral edges also carinate 

 and followed below by traces of elongate foveolae. Frontal costa 

 nioderately prominent above the ocellus, flat, smooth and provided 

 with a few minute punctures, its upper extremity acuminate and 

 raised above the disk of the fastigium: below the ocellus much nar- 

 rowed, somewhat sulcate, grossly punctate and fading towards the 

 clypeus. Antennae nioderately robust, filiform, just about as long as 

 the head and pronotum combined, the apical four or five joints 

 testaceous. Pi'onotum with the two lobes about equal in length, the 

 anterior one with the sides parallel, all three transverse sulci 

 continuons and severing the inconspicuous median carina; front 

 edge margined, roundly advanced upon the occiput and gently emar- 

 ginate at middle: posterior lobe divergent, the disk flattened, the 

 median eaiina quite distinct but not prominent, the lateral cari- 

 nae wanting, hind margin obtusangulate. Tegmina as described 

 in the generic diagnosis, surpassing the tip of the abdomen about 

 one-fourth of an inch. Hind femora about a quarter of an inch 

 shorter than the abdomen, somewhat hirsute, the carinae smooth, 

 the genicular lobes angulate but not acuminate. 



General color dai'k brown, the underside and legs paler; teg- 

 mina tinged with obscure olive green; hind tibiae on ai)ical half and 

 tarsi deep red, the basai half obscure ciiiereous, the spines black. 



1) Biologia Centrali Americana, Oi'thnpt., ii, p. 275, pi. 3, flg. 11. 



