338 CALAXDKID^^. 



HOMALOXENUS Wollaston. 



[LeConte. 



H. dentipes Woll., Tr. Eut. Soc. London, 1873, 615. 



Florida: a single specimen, collected and kindly given to me by Baron 

 II. Osten Sacken, agrees so perfectly with the description of Mr. Wollas- 

 ton of his specimen from S. Domingo, that I am not warranted in consid- 

 ering it as distinct. The only difference seems to be that in my specimen 

 the thighs, though very thick, are hardly perceptibly toothed; this charac- 

 ter may, however, be sexual. The insect Avill be easily recognized by 

 the very depressed form, brown color, with dull lustre; very slender beak, 

 as long as the prothorax; slender antennae; scarcely mucronate tibiae, and 

 very widely dilated and bilobed third tarsal joint; characters of rare occur- 

 rence in the present sub-family, but combined with a general appearance 

 which renders the affinities with this tribe unmistakable. 



COSSONXrS Clairv. (emend. Wollaston.) 



To this genus, as now restricted, belong the eight species comprised in 

 groUp A, Horn, Pr. Am. Phil. Soc. 437. An excellent table of differences, 

 also the bibliography and full descriptions are there given. The funicle of 

 the antenn* becomes gradually stouter, and the dilatations of the apex of 

 the beak less evident from the first species (platalea), to the eighth (tm- 

 presdfronH), thus establishing an imperceptible transition to BoropliUeu'^ 

 Woll. So far as I may judge without comparison of siiecimens, I do not 

 see why B. minor Woll. Trans. Ent. Soc. London, 1873, 637, may not be 

 referred to the species determined by Horn as C. cortieola Say. 



MACRORHYNCOLUS Wollaston. 



To this genus I refer the Californian Rhyncolas protractus Horn, Pr. 

 Am. Phil. Soc. 1873, 444, which differs from the true lihyncoli, not only 

 as slated by Horn, in the widely separated front coxae and linear form, but 

 by the longer cylindrical beak, which is quite distinctly separated from the 

 head. The third joint of the tarsi is narrow and f< ebly bilobed. 



MACRANCYLUS n. g. 



The number of genera in this tribe has been increased to such an extent 

 as to render them extremely difficult to recognize. I am quite unwilling to 

 add to the names already published, until an attempt has been made to 

 combine them into larger groujjs. It is for this reason that I regret to pro- 

 l>()se this genus for an extremely slender but cylindrical (not depressed) 

 species, which has the beak stout, not separated from the front, gradually 

 but slightly tapering externally. The antennal grooves commence about 

 the middle of the beak, and the antennae are inserted behind the middle; 

 the scape is long, extending to the back part of the eyes, and is rather sud- 

 denly bent and thickened from the middle to the tip; the funicle is moder- 

 f.tely stout, the first joint larger and thicker; the remaining joints short, 

 closely united, gradually but very slightly broader; club oval, pointed, 

 rather small, distinctlj' annulated in the outer half. The antennal grooves 



