December 1S92. 



PSYCHE. 



365 



Sixth stage. — Nearly as in the two previous 

 stages; width of head 3.2 mm. The dorsal 

 space is partly filled in with blue, except for 

 a black edging to the dorsal white spots, a 

 black spot on each side of the white spots at 

 their obsolete junction and the short orange 

 red streaks supplementary to the subdorsal 

 orange red line. The white spots on joints 

 3 and 4 are larger than the others, single, 

 elongate, and in some examples the posterior 

 white dot on all segments is partly orange or 

 rarely obsolete. The blue band is minutely 

 black dotted, followed by the pale orange 

 lateral line which is rather irregular. Space 

 below, blue gray, the substigmatal line and 

 the one along the bases of legs yellowish 

 faint and broken, or obsolete ; spiracles large. 

 black; feet gray; venter blue gray with a 

 median row of black spots. The cervical 

 shield and anal plate are blue gray tinged 

 with black. Subdorsal warts on joint 2 

 rather large ; joint 12 enlarged a little dor- 

 sally. Dorsal hair very scant, blackish, the 

 subventral hair thick, partly silky white with 

 some dusky and reddish hairs intermixed. 



Cocoon. — Enclosed in an outer layer of silk, 

 elliptical thin, composed entirely of silk, 

 made opaque by an exudation from the anus 

 of the larva, which dries into a pale yellow 

 powder. Size 25 X S mm. 



Pupa. — Cylindrical, posterior abdominal 

 segments rapidly tapering, rounded at both 

 ends, no cremaster. Color black, rather 

 shiny, covered with short brown pile, except 

 the cases which are bare. Length 18 mm. ; 

 width 4 mm. Duration of this stage 26 days. 

 The moths appear during July. 



Food plants. — Oak (Quercus), poplar 

 (Populus), willow (Saiix), alder, (Alnus), 

 wild rose, (Rosa), peach and cherry (Prunus), 

 apple (Pyrus) and others. 



Habitat. — Oregon and Washington west of 

 the Cascade range. Found at Portland and 

 Bonneville, Oregon, Seattle and Vancouver, 

 Washington. This is the common Clisio- 

 campaof the Pacific Northwest and takes the 

 place of C. disstria of the Atlantic States. It 



is abundant in the valley of the Columbia, 

 but becomes more rare to the north. But 

 two larvae were seen in Seattle, Wash., while 

 in Portland, Or., many fruit and shade trees 

 were largely defoliated by the larvae, and 

 they were frequently observed resting in 

 large compact masses on the tree trunks. 



A lower Silurian insect from Sweden. 

 — For a long time the Devonian insects of New 

 Brunswick were the oldest known from any 

 part of the world. Seven years ago, however, 

 Brongniart discovered in the lower part of 

 the upper Silurian of Calvados, Fiance, a 

 single wing which he regarded as a cock- 

 roach and named Palaeoblattina douvillci. 

 And now Moberg announces the discovery 

 of an hemipterous insect, which he calls 

 Protocimex siluricus, in the still older rocks 

 of Flagabro in Scania, belonging to the upper 

 members of the lower Graptolitic slates, that 

 is the upper part of the lower Silurian. 

 Figures are given in the Forhandlingar of 

 the Swedish geological society. 



Entomological Notes. — The first signa- 

 ture of a new general Catalogue of Hemiptera 

 has just been issued by Lethierry and Severin 

 at Bruxelles. The arrangement is sj'stematic 

 down to the genera but the species are given 

 alphabetically and the number of species 

 added at the end of each genus and sub- 

 family. The present sheet includes a portion 

 of the Pentatomidae : the Plataspidae (19 

 genera and 187 species), the Corirnelaenidae 

 (10 genera, 66 species) and a few Scutel- 

 leridae. It will prove of great service. 



Entomologists everywhere will regret to 

 hear that the serious illness which has, for 

 the past two years, incapacitated Dr. H. A. 

 Hagen renders it improbable that he will be 

 able to do any further work. Dr. Hagen has 

 had charge of the collections of insects in the 

 Museum of comparative zoology at Harvard 

 University since October 12, 1S67, and during 

 this long period of twenty-five years has 

 applied himself with entire devotion to the 

 interests of the department. The scientific 



