92 BULLETIN 182, UNITED STATES NATIONAL MUSEUM 



KEY TO WEST INDIAN SPECIES OF OXYTELUS 



1. Head, pronotum, and elytra finely sculptured and opaque ° 6. scorpio 



Head, pronotum, and elytra not both finely sculptured and opaque — 2 



2. Elytra muricately sculptured 3 



Elytra not muricately sculptured 4 



3. Pronotum with three deep and regular longitudinal channels— 3. dantifrons 

 Pronotum without deep channels 7. glareosus 



4. Elytra longitudinally channeled 5 



Elytra not longitudinally channeled 6 



5. Pronotum at most finely and very sparsely punctate 7 



Pronotum strongly punctate, more densely at sides 8 



6. Elytra with dense ground sculpture in part 1. insignitus 



Elytra without ground sculpture 8. chapini 



7. Pronotum with three or five longitudinal grooves 2. pluvius 



Pronotum with only one longitudinal groove 9. jamaicensis 



8. Lateral depressions of pronotum with ground sculpture 5. eremus 



Lateral depressions without ground sculpture 4. incisus 



1. OXYTELUS INSIGNITUS Gravenhorst 



Oxytelus inslgnitus Gravenhorst, 1806, p. 188. 

 Oxijtelus americanus Mannerheim, 1830, p. 48. 

 Oxj/telus pumilio Boheman, 1858, p. 34. 



Oxytelus (Anotyhis) inslgnitus Gravenhorst, Bernhaueb and Schubeet, 1911, 

 p. 114. 



Description. — Head piceous, pronotum and abdomen castaneous, 

 elytra fuscotestaceous. Head with punctures very fine and obscured 

 by sculpture except behind the eyes; with dense scaly sculpture; 

 antennal segments transverse from the fifth ; labrum twice as wide as 

 long, broadly emarginate; four palpi subulate, fourth segment not 

 much more slender than the third. Pronotum almost semicircular, 

 about one-half wider than long; deeply trisulcate and with a feeble 

 longitudinal depression on each side more densely punctate; shining; 

 with rather coarse sparse punctures. Elytra coarsely but regularly 

 punctate; with an indefinite sulcus behind humerus; disk flattened and 

 with distinct scaly sculpture. Abdomen with scaly sculpture, less 

 distinct beneath. Male^ head large and quadrate, tuberculate at pos- 

 terior angles beneath, strongly dentate in front of middle; supra- 

 antennal prominences abrupt; mandibles very long, with two small 

 blunt teeth at middle inside; gular sutures almost entirely obliterated; 

 median sulcus of pronotum decidedly broadened anteriorly, bottom 

 with scaly sculpture; ninth abdominal sternite flattened. Female^ 

 head narrower than pronotum, subsemicircular, truncate in front, 

 mandibles slightly elongate, with two rather long inner teeth; gular 

 sutures strongly converging on constricted part, united and broadly 

 Y-shaped anteriorly; median sulcus of pronotum feebly broadened 



" This ground sculpture must not be confused with the fine short strlgulae found on 

 ffJareosus, whicli runs through the second half of this couplet. 



