REVISION OF ELEODIINI BLAISDELL, 81 



Salient type- characters. — Glabrous and shining; elytra obsoletely 

 siibsulcate. Pronotiim widest at the middle ; disc scarcely more arcii- 

 ately declivous laterally than on the dorsum, distinctly declivous at 

 the apical angles, obsoletely and sparsely punctulate; apical angles 

 subacute with a tendency to be feebly prominent anteriorly. Elytra 

 usually widest behind the middle; disc striato-punctate, punctures 

 more or less eroded, strife somewhat impressed, intervals apparently 

 somewhat feebly convex and obsoletely punctulate. Legs somewhat 

 slender. 



Diagnostic characters. — The salient type characters are sufficient 

 to differentiate peninsularis from the other races of omissa. 



It is A^ery interesting to note that it is necessary to use care in recog- 

 nizing it from the peninsular form of insrfla?'is, which occurs in the 

 same region. 



In insularis the pronotum is more quadrate and the apical angles 

 are more prominent anteriorly, and the anterior femora are feebl}^ 

 armed in both sexes. The first joint of the anterior tarsi of the male 

 is clothed with a brush of golden ]3ubescence beneath — the latter often 

 dark in old specimens. The genital characters are quite different and 

 subgenerically so in the tAvo species. In the peninsular form the 

 eh^tra are obsoletely striato-punctate as in oinissa var. peninsularis. 



Dr. George Horn, in his rejDort of the Coleoptera of Baja Cali- 

 fornia ,« referred the specimens here described, as peninsularis to gen- 

 tilis, and these were confused with the peninsular form of insularis 

 which were also referred to gentilis. (See Promus insularis.) 



Three specimens in the academy's collection differed from the type 

 series of peninsularis in being intensely black and highly polished. 

 One female was slightly aberrant ; serial arrangement of the elytral 

 punctures distinct, strial punctures distinctly larger than the inter- 

 stitial ; the pronotum had the sides quite strongly margined, the bead 

 thin and refiexed. These specimens were destroyed in the great confla- 

 gration of Ai^ril 18, 1906. 



GROUP I. QUADRICOLLIS SECTION. 



ELEODES QUADRICOLLIS Eschscholtz. 



Eleodes quadricoUis Eschscholtz, Zool. Atlas, III, 1,833, p. 12, pi. xiv, fig. 

 5. — Mannerheim, Bull. Soc. Nat. Moscow, XVI. 1843. p. 268. — Le 

 CoNTE, Proc. Acad. Nat. Sci. Phila., 1858, p. 181.— Horn, Trans. 

 Amer. Phil. Soc, XIV, 1870, p. 388.— Casey, Annals N. Y. Acad. Sci., 

 V, Nov., 1890, p. 395.— Champion, Biol. Centr.-Amer., IV, Pt. 1, 1884. 

 p. 80. 



Eleodes tarsalis Casey, Annals N. Y. Acad. Sci., V, Nov. 1890, p. 399. 



" Proc. Cal. Acad. Sci., IV, Pt. 1. p. .'349. 

 .59780— Bull. 03—09 6 



