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the thoracic dorsal tubercles in the different groups. In all the 
upright egg groups but one that I have examined, the meso- and 
meta-thoracic dorsal tubercles are in a transverse band, the two 
innermost being probably usually i and the outer ones ii. In the 
Hat egg groups the position is with some groups (e.y., Geometers) the 
same as in the upright egg groups before mentioned, but in others 
there are an anterior and a posterior pair. The following list of the 
few species I have been able to refer to will, I hope, convey some idea 
of the position :— 
Upright Egg Species. 
(1) With meso- and meta-thoracic dorsal tubercles set as anterior 
and posterior pairs: (Hepialns / Inpulinus ; ? is this to be considered 
an upriyht or a flat egg). Lemonia ( Crateronyx) dumi; i and ii set 
at corners of an oblong, iii a twin tubercle. 
(2) With meso- and meta-thoracic dorsal tubercles set in transverse 
line. Butterflies :—Colias ht/ale, line hide cardamines (iii bears two 
hairs). Notodontidae: ('nethocampa jrityocampa, Xotodonta trepida 
(iii duplicated in A . trepida). lAparidae : Dasychira pudibunda, 
Notolophus antiqua. Syntomis : .S', pheyea (iii appears to be two¬ 
haired on abdominals; I cannot make out on thoracic). Nola: 
.V. cvcullatella. Noctnids : Caradrina ambiyna, Heliophobus hispidus, 
Cucnllia absinthii, A.rylia patris, Graphiphora populeti, Arnphipyra 
pyramidea, Catocala promissa (iii double). Epanda lichenea and 
liUulenta (? iii duplicated, the two hairs on separate plates, one 
much weaker than the other). Also a doubtful species, probably 
Bryophila. 
(3) Meso- and meta-thoracic tubercles, with bases close together or 
on same plate. Butterfly:—Xemeobins lacina (i and ii, although 
separated at base, are very close together). Thyris fenestrata (i and ii 
on same plate ; iii double-haired). Spilosoma urticae (i and ii 
conjoined). 
Flat Egg Species. 
(1) With meso- and meta-thoracic dorsal tubercles set as an anterior 
and posterior pair. 
(A) Separated by a wide gap, anteriors well to front of segment ; 
many Lachneid species: Eutriclia qnercifolia, C'osmotriche 
potatoria, Maerothylacia rain, etc. 
(I>) Not widely separated, but situated on separate sub-segments, 
i in front of ii ; some Sphingids: Eamorphinae (Choero- 
campa) poreellus, elpenor; Phryxids ( Deilephila ) yallii, 
eupliorbiae (iii bears two seta?). 
(C) Not widely separated, but set more trapezoidally than in B, 
ii outer as well as posterior to i : Adscita (lno) statices: 
Anthrocera (Zyyaena) lonicerae, trifblii, jilipendulae ; Ptero- 
phoridae : Aciptilia yalactodactyla, (Edetnatofdiorns litho- 
dactylns, Mimaeseoptilas phaeodactylas (iii bears two setie). 
(2) With meso- and meta-thoracic tubercles having their bases 
touching or conjoined. 
(A) i directly in front of ii ; some Sphingids : Sphinx liynstri 
and pinastri, Sesia stellatarmn, Hemaris fncifonnis ; Atnor- 
phinae: A morph a populi, Mimas tibiae, Smerinthus ocellata 
(iii bears two setie). 
(B) i and ii on same wart ; some Pterophoridae : Uxyptilns 
