December, 1(502] 



PSYCHE. 



427 



perceptible reticulation. Caterpillar at 

 birth : Bristles of body not spiculif- 

 erous, apically enlarged or flaring. 

 Afature aitcrpillar : Body naked except 

 for scanty and excessively short almost 

 microscopic hairs, occasionally provided 

 with fleshy filaments. Chrysalis: With 

 a pair of frontal projections, hanging 

 freely by tail and mid-girth only. 



Family HESPERIDAE. 

 Tribe Hesperini. 



Butterfly: Tail of antennal club 

 nearly or quite as long as club proper; 

 abdomen generally shorter than hind 

 wings. Males with a costal fold on 

 fore wings concealing special scales, and 

 with a corneous sheath protecting the 

 extended alimentary canal. £gg: Sub- 

 spherical, vertically ribbed and cross 

 lined. Caterpillar at birth : Bristles of 

 last segment only a little longer than the 

 others, not recurved. Mature eater- 

 pillar : Body relatively stout and 

 plump ; highest points of the two sides 

 of the head more distant froui each 

 other than the length of the base of the 

 frontal triangle. Chrysalis : Tongue 

 case not protruding beyond the tip of 

 the wing cases. 



Tribe Pamphilini. 



Butterjly: Tail of antennal club 

 shorter than the club proper, occasion- 

 ally wanting; abdomen as long as or 

 surpassing the hind wings. Males often 

 with a velvety oblique streak on the 



disk of the fore wings, the alimentary 

 canal not prolonged. Egg: Usually 

 subhemispherical, with smooth or ob- 

 scurely reticulate surface. Caterpil- 

 lar at birth : Some of the bristles of 

 last segment exceptionally long and 

 recurved. Mature caterpillar : Body 

 very elongate ; highest points of the two 

 sides of the head no farther apart than 

 the length of the base of the frontal 

 triangle. Chrysalis : Tongue case free 

 at tip, protruding beyond the wings. 



A SIMPLIFIED SPREADING BOARD. 



Some entomological friends who have vis- 

 ited my laboratory recently iiave been unex- 

 pectedly interested in a means of setting and 

 spreading the wings of insects that I have 

 employed for a good while, and have asked 

 that I should describe it. I am constrained 

 to do so, not because the old form of grooved 

 board with cork backing is unsatisfactory, but 

 because my board is simpler, cheaper and 

 can be made in a moment by any one. It is 

 better, too, in some respects and for some 

 kinds of insects, and I now use it almost 

 altogether. 



It consists of a thin piece of smooth board 

 of soft ,vood with rows of awl holes punclied 

 through it, fastened flatwise upon anollier 

 thin board of the same size. That is all 

 there is to it. The piece with the holes in it 

 should be of a thickness equal to one fourth 

 the length of the pin. 



To use, the pin is thrust through the insect 

 nearly to the head, inverted, and pushed head 

 downward to the bottom of one of the holes, 

 and the wings are expanded and pinned down 

 under strips of paper in the usual way, but 

 in the inverted position. 



Its advantages over the old, grooved board 

 are : — 



