78 Journal New York Entomological Society. [Voi. xv. 



branched. I think that this term conveys the peculiar structure of 

 these hairs better than Dr. Horn's term " tufted." 



A few of our species I have not seen ; of these, the characters used 

 in the table, are taken from the descriptions. 



Otidocephaliis poeyi Chev. is unknown to me. It is a Cuban 

 insect, found in Florida and it is possible that cavirostris and />oeji are 

 the same. 



Otidocephaliis peiforatus Horn, is not included in the table. 

 Major Casey erected for this species the genus Oopterinus, which was 

 rejected by Dr. Horn, but accepted by Champion in the "Biologia, " 

 who added several species from Mexico and Guatemala. The species 

 of this genus are principally distinguished by the ovate elytra, -with 

 the humeri obsolete, otherwise they do not seem to differ from 

 Otidocephaliis except that the species are apterous. 



Table of the Species of Otidocephalus. 



1. Femora dentate ; beak in both sexes without large, dorsal excavation at middle. 2. 

 Femora not dentate ; beak in the male with a large and deep dorsal excavation 



near middle 24. 



2. Elytra with recumbent or subrecumbent radiate-pectinate hairs and with erect 



setae 3. 



The hairs on elytra simple, not radiate-pectinate, except in well preserved ex- 

 amples of arizonicus, where a few radiate-pectinate hairs may be present 

 ■near the scutellum and base of thorax 7. 



3. Pubescence of alternate elytral intervals sparse or absent 4. 



Pubescence of all the intervals uniform ; in insignis the intervals are narrowly 



denuded on each side of the rows of punctures 5. 



4. The glabrous elytral intervals with a few widely separated punctures. 



vittatus Horn. 

 The subglabrous intervals confusedly and somewhat densely punctured. 



nivosus Casey. 



5. Erect sette on elytra black ; pubescence uniform in color, pale brownish-cinere- 



ous, dense on the elytral intervals, but denuded in a narrow space on each 

 side of the series of punctures, producing a multivittate appearance. 



insignis Casey. 

 Erect setse on elytra white 6. 



6. Beak sparsely punctate at tip, obtusely carinate ; pubescence of elytra paler 



along suture, at sides and middle of thorax ulkei Horn. 



JBeak coarsely punctate, smooth at middle in front, not carinate ; pubescence uni- 

 colorous sparsus Horn. 



7. Elytral series of punctures distinct, intervals very sparsely punctate 9. 



Elytral series of punctures more or less confused by the irregular punctuation of 



the intervals 8. 



