MONOGRAPH OF WEST INDIAN STAPHYLINIDAE 231 



22. Prostemum connate with edges of hypomera 23 



Prosternum not connate with edges of hypomera 26 



23. Body covered with dense coarse verrucose sculpture LV. Eonetus 



Body not covered with dense coarse verrucose sculpture 24 



24. Prothorax very elongate ; head grooved behind eyes LVIII. Sphaeronum 



Prothorax not very elongate; head not grooved behind eyes 25 



25. Labrum quadridentate LVII. Echiaster 



Labrum bidentate LVI. Astenus 



26. Labrum denticulate or broadly lobed in front 27 



Labrum not denticulate, truncate and narrowly emarginate. 



XLIX. Suniophacis 



27. Prothorax narrowly prolonged at middle in front LI. Stamnoderus 



Prothorax not distinctly prolonged in front 28 



28. Head coarsely umbilicately punctate throughout LIT. Stiliphacis 



Head not distinctly umbilicately punctate throughout 29 



29. Head and pronotum densely sculptured 30 



Head and pronotum not densely sculptured L. Stilosaurus 



30. Labrum with two long and very slender hornlike denticles. 



LIII. Suniosaurus 

 Labrum with denticles not slender and hornlike LIV. Suniocharis 



XXXL Genus THINOCHARIS Kraatz 



Thinocharis Kbaatz, 1859b, p. 142. 

 Subgenus Sciocharis Lynch, 1884, p. 260. 

 Subgenus Sciocharella Casey, 1905, pp. 151, 158. 



Genotypes. — Thinocharis 'pygmaca Kraatz (designated by Black- 

 welder, 1939). Of Sciocharis, S. castanoptera Lynch (designated 

 by Blackwelder, 1939) ; of Sciocharella, S. delicatula Casey (mono- 

 basic). 



Diagnosis. — Body slender, moderately convex ; antennae posteriorly 

 flexile, not strongly geniculate, basal segment not very elongate, first 

 and second segments larger than the remainder, which are of uniform 

 slenderness, somewhat verticillate ; labrum without median tooth, 

 with or without paired denticles; fourth segment of maxillary palpus 

 very small, subulate; gular sutures not at all united, variable; pro- 

 sternum carinate posteriorly, short, not dilated laterally under the 

 coxae; hypomera prolonged in a short lobe partially behind the coxae; 

 anterior coxal cavities open behind, confluent; front coxae large, ex- 

 serted; middle coxal cavities confluent; posterior coxae contiguous, 

 "conical"; first and second abdominal sternites absent, third carinate 

 at middle; seventh sternite generally modified in the male; tarsi 5- 

 segmented, anterior tarsus either slender or dilated. 



Remarks. — This genus will undoubtedly be a large one with several 

 more subgenera. Its developments somewhat parallel those found in 

 the genera related to Lithocharis and Medon, but I am at present 

 unable to believe that the peculiar form of the antennae is not a char- 

 acter of generic importance. 



