266 
Addenda: ZYGAENA. By H. Reiss. 
situation Sometimes m the $ the red extends dorsally over to a second segment. According to Staudhtoer 
Z. erschoffi also occurs m the Alexander mountains and I have had a $ with a label from this locality 
submitted to me. Z. erschoffi is on the wing mid July. It is a mountain insect, as is indicated by the late 
season when it emerges. I am illustrating the $ and $ types from Usgent ex the Staudinger collection 
~ I cannot subscribe to Staudinger's opinion that the specimens described by Erschoff as olivieri var 
tashkenten- are identical with erschoffi. As I am convinced of this I have introduced the denomination subsp. tashken- 
tensis Reiss ( — olivieri var. Ersch.). The specimens were captured already at the end of May at Tashkent 
and m the Sarafshan valley between Jori and Dashty-Kazy. My opinion is that this is the lowland race of 
Z. erschoffi, which varies by the somewhat larger form, more brilliant colouration, somewhat enlarged spots 
more apparent red collar and more extensive red admixture on scapulae. The abdominal belt, according 
to the description, is wider than in olivieri from Achalzich and therefore coveiing at least 3 segments. In the 
illustration of Erschoff the pale fringes are distinctly represented. 
SIS. 
merzbache- C. merzbacheri Reiss (16 m) is doubtless most closely related to erschoffi. It occurs in the Tien- 
• slian (Naryn territory) and according to 2 specimens (<?$) in the Zoological Museum of the University of 
Berlin, also m the eastern Altai. I take the mountains around Narynsk as the habitat of the type race. It 
appears to be very frequent in its localities. Merzbacher discovered this Zygaena in July 1908 and brought 
back a number from his expedition. Ground colour is black with scarcely perceptible bluish, sometimes greenish 
sheen. I he red is more fiery than that of margelanensis and separata, but not so yellowish as in erschoffi. 
Basal spot (1 and 2) of forewings in comparison with that of sogcliana and its races, is more or less in¬ 
creasingly white (generally in the 9 $) or red towards the inner margin, however the inner margin itself 
remains narrowly black. The small spot 3 of forewings and the usually much larger spot 4 are situate as 
in erschoffi. They are generally close together and usually conjoined by a merging of their faint whitish sur¬ 
rounds. Occasionally these 2 spots are slightly separated in the <J. Specimens also occur in which the red 
ol spots 3 and 4 is confluent and this dual spot is circumscribed as a whole by whitish. Spot 5 is generallv 
as widely surrounded by white as 3 and 4, whilst spot 6 which is always appended at its upper end to spot 
o, is generally without whitish surround; only in a few specimens, mostly 99 , there are traces of whitish. 
Jne V specimen before me has wider whitish edges to spots of fore wings than any other specimen. Hind- 
w mgs have only a very faint bluish black margination, in some specimens it is quite absent. Generallv the 
margins of hmdwmgs are scarcely as marked as in erschoffi and much narrower than in kohistana and altissima. 
unges m all specimens are blackish, those of forewings sometimes have a palish sheen. The brilliant red 
belt encircles the abdomen completely on one segment. The red collar is bolder in the 9 than in the 0 A in 
" llc 1 as in tlie sogcliana mountain races, occasionally merely traces of same are visible. Underside of 
both wings, as the upperside, only colouration is fainter. Antennae about like those of erschoffi, the 9 gener- 
dealbaia. ally has less robust antennae than the The 9 type ex my collection is illustrated. — ab. dealbata^Rehss 
denominates a $ ex my collection from the type series, that has no whitish surround to the spots. — ab. 
confluens. confluens Shelj. (= rubescens Bgff.) (p. 22 ) is described from a $ that was captured on 25th June in the Naryn 
region. The specimen is not a transition to rubescens Bgff., but is completely identical with same. Z. merz- 
bachen is a pronouncedly mountainous species, as are sogdiana-separata. In 10 specimens in the collection 
ol Uaniel, Munich, the altitude of capture is stated as 2200 m. The specimens from the Altai have slightly 
wider margins to hmdwmgs and the 9 has whitish scapulae. 
p. 22 , line 23 from below. Z. truchmena Ev. This species is best classified here. Antennae vertex 
and thorax are glossy steely blue; the head below the antennae, collar and abdomen are scarlet red ventrallv 
the colour is grey-black. Forewings are glossy steely blue. Basal spot of forewings (1 and 2 ) is rounded out¬ 
wardly and edged with white, spots 3 and 4 are contingent in the type race from the southern Kirgisen 
steppes and are white, sometimes however with a larger or smaller red centre. Spots 5 and 6 are appended as in 
erschoffi. Spot 5 is white with red centre, spot 6 generally completely red. A dividing line between spots 
3 and 4 as well as spots 5 and 6 is not especially rare. The somewhat paler red hindwings, which are hyaline 
m the disc with red scaled veins, have a narrow blue-black margin and similar fringes. 
7. olivieri Group. 
p^ 23, line 27 from top. Z. olivieri Bsd. (I 6111 ). The type race originates from Syria, whence the 
botanist Labillardiere had first brought back specimens over 100 years ago. I assume that the type race 
occurs m the immediate neighbourhood of Beirut, as the specimens from there correspond most exactly to 
the description and illustration of Boisduval. The denomination cremonae (Stgr. i. 1.) Seitz is synonymous 
with olivieri Bsd. The wide margins of hindwings of the type race are striking in comparison to all other 
species and races of this group. As cremonae was given with rather too yellowish a colouring on pi. 7 a 
m Vol. 2 I am now illustrating a £ of the typical olivieri from the Zoological Museum of the University of 
Berlin. Ground colour is blue-black with 3 brilliant spots. The 1 st spot (1 and 2 ) occupies the entire base from 
