118 Ins, 
HYMENOPTERA. 
35, and the few previously known are redescribed, viz. : P. dorsalis^ 
Leg,ch ( $ = scutellata, Westw.), polita, Leach, kirbii, Leach, pi. xxxv. figs. 
3 & 4, hicolor, Leach, latreillii, Leach, pi. xxxvi. fig. 3, bella, Newm.,/(em(~ 
ginea, Leach, lewisi, Westw., scabra^ Newm., and ventralis, Gu4r. 
P. Cameron makes the following synonymic notes : — Tenthredo pista, 
Klug, = viridis, L., T. viridis, Klug, = T. mesomelas^ L., Lyda punctata^ 
Fabr. ? =. T. nemoralis^ L., Dolerus nigro-cceruleus and fuscipennis, Smith, 
are probably sexes, and these, as well as Macrophya vexator and luctifera^ 
Smith, belong to Emphytus\ Selandria nigriceps. Smith, is a i/bnop^acZ- 
nus ; Derecyrta deceptm^ Smith, is probably a Xiphydria ; Selandria 
grandis, Zadd., = sm, Voll., Fenusa melanopoda, Gam., = nigricans^ 
Thoms., = pumila^ Zadd. ; Nematus curtisjnna, Thoms., is distinct from 
miliaris. Ent. M. M. xvi. pp. 220, 221, 250, & 265. 
P. Cameron (Tr. E, Soc. 1880) regards the change of colour in certain 
larvae of Tenthredinidce, &c., as protective, and correlated with changes of 
habits at different stages of their existence (pp. 71-73). He also remarks 
on dimorphous larvae (pp. 73 & 74), and on the use of the hairs in green 
larvae (pp. 76 & 77). As suggested by Meldola and Lubbock, they prob- 
ably prevent the larvae from castiiig a sharply defined shadow on the leaf, 
but they may also serve as a protection against the attacks of ants or 
other carnivorous insects. Finally (pp. 76-79) he discussed partheno- 
genesis in the Tenthredinidoi^ which appears to be very general in the 
family. Out of about 330 British species, the males of 53 are unknown, 
while those of 54 others are so rare that the author has never seen 
them. 
E>. von Stein describes the larvje of Emphytus cingillum and patellatus, 
Tenthredo scalaris, Selandria luteola^ Hlug, and S. serva, Fabr. ; Ent. 
Nachr. vi. pp. 246-252. 
Pristiphora grossularice and Selandria rosce noticed ; Nat. Canad. xii. 
pp. 126 & 127. 
Trichiosoma triangulum^ Kirb., var. aleutiana, from the Aleutian 
Islands described ; Cresson, Tr. Am. Ent. Soc. viii. p. 1. 
Lophyrus rufus and parasites noticed ; Brischke, Ent. Nachr. vi. p. 93. 
Nematus. General remarks on the difficulties which beset the study of 
the genus ; Brischke & Zaddach, Ent. Nachr. vi. pp. 229-232. Partheno- 
genesis ; Fletcher, Ent. M. M. xvi. pp. 269 & 270, xvii. p. 21. 
Selandria rosce. Natural history ; Am. Ent. iii. pp. 115 & 116, figs. 42 
&43. 
Dolerus puncticollis and liogaster, and Pcecilosoma longicorne., recorded 
as new to Britain ; Camerou, Ent. M. M. xvi. pp. 249 & 250. 
Allantus. British species tabulated and discussed; id. 1. c. pp. 221- 
224, 247 & 248. 
Tenthredo velox, Fabr., redescribed, and the allied species tabulated ; 
id. 1. c. pp. 248 & 249. T. fidvicornis, Klug, destructive to plums, &c. ; 
A. B., Feuill. Nat. x. p. 147. 
Lyda arvensis^ Panz., = depressa, Panz., nec Schr., = alpina, Klug, = 
hlugi^ saxicola, abietina, annulata, and annulicornis, Hart., but hyper- 
trophica is distinct ; Vollenhoven, Tijdschr. Ent. xxiii. pp. xiv. & xv. 
