474 PHYTOPHAGA. 



0. scutellatus ; the spots of the elytra are as usual not very well defined, though visible 

 to the naked eye ; the head is devoid of any elevations, except those of the frontal 

 tubercles, and the punctuation is hidden by the thick pubescence. 



9. Omotyphus varicornis. 



Obscure fulvous or dark fuscous, thickly pubescent ; the sixth to the eighth joints of the antennae black ; head 

 and thorax granulate-punctate ; elytra with a basal depression, finely punctate-striate, the interstices flat, 

 variegated with yellow or brown pubescence ; palpi filiform. 



<$ . Antennae slender, more than two thirds the length of the body. 



9 . Antennae short, the terminal joints incrassate. 



Length If -2 lines. 



Edb. Guatemala, near the city {Champion, Salvin), Zapote, Capetillo (Champion). 



Many specimens from the localities cited above prove this species to be again a very 

 variable one, and remarkable for the entirely differently formed antennee in the two 

 sexes. I have no doubt these refer to the same species, as they were obtained at the 

 same localities, and show no other differences whatever, although in coloration scarcely 

 two examples are alike. 0. varicornis is principally distinguished by the granulate 

 head and thorax ; the latter is quadrate and distinctly transversely depressed near 

 the base, and sometimes on its surface are seen more or less distinct longitudinal yellow 

 pubescent bands varied by similar dark fulvous bands ; the elytra in the fulvous speci- 

 mens are irregularly marked with stripes of yellow pubescence, especially noticeable at 

 the apices, but the surface has generally a mottled appearance ; some specimens are 

 almost black, thickly clothed with fuscous or ferruginous hairs in some places ; the 

 legs are generally fulvous, sometimes darker or variegated. 0. fuliginosus, Clark, 

 seems to be a closely allied species, but is of much larger size, and the head is described 

 as having three longitudinal carinations, of which in the present species no trace can be 

 found. 0. varicornis possesses all the characters supposed to be peculiar to Omotyphus, 

 and, if I am right in referring all the specimens before me to the same species, it will 

 be seen that no reliance can be placed on the structure of the antenna? alone as a guide 

 for the classification of these insects. 



10. Omotyphus maculicornis. 



Homotyphus maculicornis, Clark, Cat. of Halticidse, p. 127 \ 



Hab. Mexico 1 . 



Unknown to me. There is so much similarity in Clark's description of this and 

 several other species often showing a great amount of variation, that, without having 

 seen the types, doubts must be entertained as to the distinctness of this and other 

 closely allied forms, some of which have been established on single specimens.. 



