TERMS DESCRIPTIVE OF LARVA, PUPA, AND IMAGO. 31 



IV. Erycinidae. Larva, short and stout, woodlouse-shaped, some- 



what hairy; pttpa, supported as in Papilionidce ; imago, male, 

 as in Nymphalida, having four legs only adapted for walking, 

 while the female has six, as in Papilionidce. There is but 

 one species, which is brown with yellowish spots. 



60. Nemeobius lucina (Linn.). 



V. Hesperiidae. Larva, head large and the segments that follow 



narrower, smooth ; pttpa, in a slight cocoon among the leaves 

 &c., of the food-plant ; imago, with six legs adapted for 

 walking ; antenna, which in two species are slightly hooked, 

 widely separated by the broad head ; at rest the hind-wings 

 are nearly horizontal. The seven species bear the common 

 name of Skippers, from their short, abrupt flight. 



61. SyrichtJms malvee (Linn.). 



62. Nisoniades tages (Linn.). 



63. Hesperia thaumas (Hufnagel). 



64. ,, lineola (Ochsenheimer). 



65. ,, actceon (Rott.). 



66. ,, sylvanus (Esper). 



67. ,, comma (Linn.). 



68. Carterocephalus palcemon (Pallas). 



Terms used in Describing the Larva, Pupa, 

 and Imago of a Butterfly. 



Before proceeding to take the British butterflies 

 seriatim^ it will be necessary briefly to call attention to 

 the chief terms used in describing them in their three 

 stages larva, pupa, and imago. The larva of Papilio 

 machaon (Fig. 9) may be taken as the type of all 

 butterfly caterpillars. It has always thirteen rings, or 

 segments as they are usually called, the head being 

 reckoned as one, and that the first. A is the anterior, 

 and L the anal extremity of the body ; B, c, and D are 

 the three pairs of true, jointed legs; E, F, G, H, and K, 

 the five pairs of claspers protuberances of the skin, 

 which do not reappear in the imago. The legs are always 

 on the second, third, and fourth segments, and the 



