. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 46. which has been widely used to designate the biting lice of the members of the horse family. The original reference dates back considerably more than a century, and doubtless the insect was familiar many cen- turies before that, as the horse and ass have been too familiar as domes- tic animals to allow of the parasites common to them escaping entirely the notice of man. According to Piaget this occurs upon both the ass and the horse, while the following species he has found ouly on the horse. We have not been
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 46. which has been widely used to designate the biting lice of the members of the horse family. The original reference dates back considerably more than a century, and doubtless the insect was familiar many cen- turies before that, as the horse and ass have been too familiar as domes- tic animals to allow of the parasites common to them escaping entirely the notice of man. According to Piaget this occurs upon both the ass and the horse, while the following species he has found ouly on the horse. We have not been fortunate enough to secure examples of this form, though we have the other in great abundance, so we are compelled in describing to depend upon the excel- lent description and figures of Piaget, the latter being reproduced here for comparison. The head in this form is shorter and less rounded in front, that of the male being still less rounded than the female, while the abdomen is more slender and tapering. The trans- verse bands are also represented as less conspicuous. Perhaps the most striking j^oint, however, is the posi- tion of the antenmx', which stand well forward on the head, so that the front border of the head and base of FIG. z,.-rriohodectes the autenuaj are nearly in line. piiosiis. (After Piaget.) The habits of the species and the remedies applica- ble to it are naturally identical with those of the other related species. {Trichodectes parumpilosus Piaget.) While it does not seem possible that all the writers previous to Denny should have overlooked this form, which appears to be the more com- mon one, at least on the horse, it may be true that Denny was the first to give it a thorough descrip- tion and careful drawing. He siieaksof it as com- mon on the horse and ass, but Piaget says he has never found it on the ass and there is of course a possibility that Denny did not distinguish between this and the preceding species. In this species the head is decidedly ro
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