CELASTRINA. 381 



circular black spot, the posterior one largest, the other three about equal, two of 

 them situated at equal distances along the upper border, the fourth beiow, nearly 

 as far from the largest as the front upper one is. Body subcylindrical, tapering, 

 flattened beneath and a little above, but still as high as broad, the sides well 

 rounded though subtectiform, and the lower margin produced laterally a little. 

 First thoracic segment bearing above in the middle a slightly raised, large shield, 

 the sides of which converge strongly anteriorly, making the anterior border very 

 short, while the posterior is long and well rounded. It bears three arcuate rows 

 of warts, emitting long, forward and upward-directed hairs, the anterior row 

 consisting of three, the middle of five, and the posterior of six, warts* ; besides 

 these, the segment is furnished with a row of warts emitting long hairs, parallel to 

 and outside of the front border and sides of the shield ; the last segment of the 

 abdomen bears a similar row in a reverse position ; besides these, behind the 

 1st thoracic segment, there is a laterodorsal series of high, conical warts, one to a 

 segment in each row, situated a little in advance of the middle, and emitting very 

 long, curved, backward sweeping, tapering hairsf ; also a ventrostigmatal row of 

 small warts, three on each segment, not placed in a line, emitting straight, 

 delicate, tapering, finely-pointed hairs, of which one, a central one, is longer than 

 the other two, and all are directed outward and a little downward, so as to reach 

 the surface upon which the animal rests. In addition, there are, on each side, four 

 longitudinal series of smooth lenticles, two of them larger and two smaller ; the 

 two larger have each one lenticle to a segment, placed in the middle, and consist 

 of a supralateral and an infrastigmatal series \ ; the smaller ones consist of a supra- 

 stigmatal series, two on each segment at equal distance from either margin, and a 

 laterostigmatal row, one on a segment, placed in the middle. Legs long and very 

 slender, the basal joint short, conical, the remainder cylindrical and equal, claws 

 pretty large, long, pretty strongly curved, tapering; prolegs short and rather stout, 

 globular at base, beyond very short and half as broad, the hinder pair quite long, 

 tapering but little. 



Larva (adult) : Head well-rounded, rather broader than high, broadest 

 above, tapering very slightly below, with a rounded curve which is rather broad 

 and full beneath, docked squarely at the labrum ; it is apparently deepest in the 

 middle, and has a front fall. Triangle very large, much higher than broad, 

 extending nearly to the summit of the head ; a very few long hairs at the lower 

 part of the head. Basal joint of antennae mammiform, pretty large, second about 

 as long as broad, third not much smaller than the second, twice as long as broad, 

 cylindrical, bearing at its apical edge a number of hairs, which conceal in part at 

 least the fourth joint. Ocelli six in number, of uniform size, like a flattened 

 hemisphere in shape, five placed in a strongly curving row, equidistant from each 

 other, and separated by less than their own diameter, the lower two opposite the 

 posterior base of the antenna, the others curving backward, the upper four on the 

 arc of a pretty small circle, the sixth behind the others, a little further removed 

 from the uppermost than from the fourth from the top, and forming with these 

 rather less than a right angle. Labrum large, very broad, half as long as broad, 

 the outer angles square but rounded off, the middle two-fifths of the front margin 

 roundly and considerably excised. Mandibles armed at the tip with large, 

 triangular, bluntly-pointed teeth, half as long again as broad. Maxillae with the 

 inner and outer palpi exactly similar in size and shape, the penultimate 

 joint being about twice as long as broad, tapering, the apical minute, conical. 

 The apical two joints of the labial palpi are similarly shaped but much smaller and 

 proportionately slenderer. Spinneret long, and beyond the conical base equal and 

 not very slender, the tip bluntly rounded, directed vertically. Body pretty 

 regularly arched longitudinally, with the posterior edges of the segments elevated 

 a little, and thus showing the divisions plainly; the sides of the body slope 



* In Celastrina argiolus the prothoracic plate of the newly-hatched larva has 

 (described in terms of three rows): (1) A front straight row of four, viz., two 

 central hairs and a lenticle at each end ; (2) a central row of a pair of large hairs ; 

 (3) a posterior, arcuate, row of four hairs — making altogether a total of eight hairs 

 and two lenticles (four hairs and one lenticle on either side) (see detailed descrip- 

 tion, posted). In this it agrees with Aricia astrarche, Agriades corydon, Cyaniris 

 semiargus, but not with Cupido minima. — T.A.C. 



f The hairs of tubercle ii are also present but not mentioned. — T.A.C. 



\ This account of the lenticles is erroneous ; part of the error is due to mistaking 

 one of the hairs (of tubercle iii?) for a lenticle. — T.A.C. 



