﻿Contribution Toward Historij of GaleatHs Pcckhanii 107 



Third Instar? (Plate lY, Fig. k) : Cephalic spines moderately- 

 long blunt, the median one usually a little longer than the others. 

 Antennae stout, the third segment about one and three-fourths 

 times the length of the fourth. Outer margins of pro-, meso-, and 

 metathorax on each side armed with a long spine ; the middle of 

 both pro- and mesothorax with an erect spine on each side of the 

 median line. Abdominal segments two, three, four, five, six, seven 

 and eight armed on each side near the postero-outer margin with 

 a long spine, the ninth segment with two long spines ; segments 

 two, five, six and eight each armed with an erect spine on the 

 median line, usually two or three oi- all these spines with a double- 

 pointed tip. The spines in this instar are rather stout and blunt. 

 Length, 1.1 mm. General color testaceous, with a few small 

 brownish spots. 



Fourth Instar? (Plate IV, Fig. i) : Spine on head thorax and 

 abdomen arranged as in the preceding instar, but all much longer 

 and pointed. Body and spines sparsely clothed with moderately 

 short spine-like structures with a bulbous or knobed tip. Antennae 

 with the third segment a little less than twice as long as the fourth. 

 Mesothorax distinctly larger than in the preceding instar. Length, 

 1.65 mm. General color testaceous, with small brownish areas at 

 the base of some of the spines. Spines more or less brownish. 



Last Instar (fifth?) (Plate IV, Fig. /) : In this stage the 

 spines on the head and thorax are longer than in the preceding 

 instar. The spine-like structures with bulbous tips are also a little 

 longer and more numerous. (Plate IV, Figs, h and i.) Pronotum 

 large, the posterior process subtruncate. Mesothoracic wing pads 

 large, somewhat leaf -like, projecting on the fifth abdominal seg- 

 ment and completely covering the metathorax and metathoracic 

 Aving pads. Abdominal segments two and three with the marginal 

 spines wanting, also spines along margin of metathorax. Spines 

 along the median line of the pro- and mesothorax and median 

 spines of abdomen, especially prothoracic ones, with raised some- 

 what bulbous areas at the base. Antennae slender, clothed with 

 several setae, the second segment twice the length of the fourth. 

 Occasionally, one of the spines on the head or abdomen are double 

 (two spines arising from almost the same base). A couple speci- 

 mens in both the fourth and fifth instars have been found with an 

 extra spine on the head (six spines) and one or two extra on the 

 abdomen. As a rule, however, the number of spines seem to be 

 quite constant. Length, 2.8 mm. General color testaceous, varie- 

 gated with brown or fuscous. Spines more or less brownish. 



The adult of GaleaUis peckhami is only known to occur in the 

 macropterous form. Several Palaearetic species are found in 

 both brachypterous and macropterous forms. The head normally 

 bears five long spines and it is very rare that one finds an indi- 

 vidual Avith six spines. The posterior extension of the pronotum 

 is somewhat inflated and the median carina is well developed. The 

 hood is rather high, not broad and covers the base of the head. 



