126 AMERICAN COLEOPTERA. 



ciliate, thus forming a sort of transition between the ciliate 

 and non-ciliate species. He says that it differ from palli- 

 pennis otherwise in having more definite punctuation of the 

 elytra, and the pygidium of the female quite simple at the 

 extremity, whereas in pallipennis it is prolonged, incrassate 

 and somewhat reflexed. This structure of the pygidium in 

 the female is very distinct in some specimens before me, 

 and feeble or obsolete in others that appear to be equally 

 good pallipennis, I am, therefore, undecided as to what signifi- 

 cation to attach to these variations. 



TROGOSITID^E. 

 A new genus seems to be necessary for an undescribed 

 Californian species allied to Nemosoma and Alindria. These 

 two genera are themselves mutually very closely related, 

 differing only in the broader more conspicuously spinose 

 tibiae and relatively shorter tarsi of Alindria. The differ- 

 ence in the form of the eyes indicated in the " Classifica- 

 tion " is barely detectable, and seems to me of even less 

 weight than such superficial characters as the humeral pits 

 and finer elytral sculpture of Nemosoma. The new genus 

 certainly differs more from each of these than they differ 

 from each other. 



PSEUD ALINDRIA new genus. 

 Elongate, cylindrical, head equal both in length and width 

 to the prothorax ; epistoma deeply triangularly emarginate 

 and impressed at apex, the sides produced over the base of 

 the mandibles ; palpi as in Nemosoma and Alindria. An- 

 tennae as in these genera, except that the club is wider and 

 less asymmetric, being distinctly developed interiorly, though 

 less so than exteriorly. Eyes broadly transversely oval, not 

 at all emarginate. Elytra without basal pits, not striate, 

 the punctures confusedly distributed, with traces of serial 

 arrangement near the suture. Tibiae rather slender, the two 

 anterior pairs with two or three small distant spines on the 

 outer margin ; front tibiae with a rather slender curved apical 

 spur ; middle and hind tibiae without distinct spurs ; tarsi 

 slender, as long as the tibiae, last joint shorter than the three 

 preceding united. 



