^* Note—A great deal of variation occurs and a good series isneeded to ensure accurate determinations. The dorsal head hairs are not very constant. In many cases the upper dorsal head hairs are in threes and the lower head hairs in twos,sometimes they occur in fours and in threes, but in only a very few specimens examined were the upper head hairs found to be single as in aestivalis. In many specimens some of the abdominal laterals were found to be in threes, but the sixth laterals are alwys paired, unlike those of hirsuteron, in which they are single.