. Catalogue of Lepidoptera Phalaenae in the British Museum. Moths. 8 INTRODUCTION. usually provided with a terminal pair of spurs, and the hind tibise with medial and terminal pairs ; the tarsi usually, and the tibiae often, are more or less spinous, and the fore tibiae sometimes bear a curved terminal hook ; in the male the mid or hind tibiae often have a scent-brush contained in a Fig. 3.—Legs of Moths 1. Fore leg. ; c. Coxa. t. Trochanter. /. Femur. t. Tibia. tar. Tarsus. (From Packard's Guide, p. 231.) 2. Mid leg. 3. Hind leg. u. Ungues. p. Pulvillus. sp. 1. Single anterior spur,
. Catalogue of Lepidoptera Phalaenae in the British Museum. Moths. 8 INTRODUCTION. usually provided with a terminal pair of spurs, and the hind tibise with medial and terminal pairs ; the tarsi usually, and the tibiae often, are more or less spinous, and the fore tibiae sometimes bear a curved terminal hook ; in the male the mid or hind tibiae often have a scent-brush contained in a Fig. 3.—Legs of Moths 1. Fore leg. ; c. Coxa. t. Trochanter. /. Femur. t. Tibia. tar. Tarsus. (From Packard's Guide, p. 231.) 2. Mid leg. 3. Hind leg. u. Ungues. p. Pulvillus. sp. 1. Single anterior spur, .sp. 2. Paired medial spurs. x-p. 3. Two pairs of posterior spurs. The wings consist of two closely applied laminae of membrane covered with scales or hairs which have their bases inserted in a series of pits and overlap one another like tiles. The membrane is traversed by a series of veins, which are tubular blood-vessels containing nerves and tracheaj. The fore wing typically has 12 veins—the internal nervure with three branches (1 «, 6, c), 1 a being short and often forming a fork at the base of 1 &, and 1 c usually obsolete ; the median nervure with its two branches (2, 3); the radial nervure with three branches (4, 5, 6); the subcostal nervure with five branches (7, 8, 9, 10,11); and the costal nervure (12) *. The hind wing has twelve veins, as in the fore wing, in the Micropterygidce and Hepialidct', the extra veins being numbered 7 a, b, c, d ; in all the other families typically eight veins, the difference from the fore wing consisting in the absence of four of the subcostals, but one of them is probably represented b}" the bar between veins 7 and 8 found in the Lymantriada', SpJiingidce, Eupterotida^, etc. t: almost any of the veins may be either aborted or coincident with other veins. Beside the true veins, cross veins between other veins, or veinlets between the costal nervure and * The American system of nomenclature for the median, radial, and subcos
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