966 : CHARLES PauL ALEXANDER 
small, setiferous tubercles, one above each wing axil, the other four arranged in a trapezoi 
on dorsum with the anterior pair closer together; metanotum with six setiferous tubercles 
four of which are median in position, the other pair at antero-lateral margin, near base o 
halteres. Wing sheaths ending about opposite apex of second abdominal segment. Le 
sheaths ending before apex of third abdominal segment. 
First abdominal segment sittilar to metanotum; segments 2 to 7 indistinctly subdivide 
into a narrow basal ring and a much broader posterior ring; basal ring unarmed except fo: 
a seta on pleural margin and a trapezoid of tubercles on sternum; posterior annulus arme 
as follows: tergites with four tubercles arranged in a quadrangle and located in the dar 
median stripe, posterior tubercles with a stiff seta just laterad of each; a lateral seta on 
line with anterior tubercles; two lateral setae on a level with posterior tubercles, the proxima 
one considerably the larger; these setae located in the yellow sublateral stripe; pleural margi 
with two setiferous tubercles with an acute subappressed spine between them; a seta immedi 
ately ventrad of anterior tubercle; on segments 6 and 7, spine closer to caudal margin o 
segment, and tubercle beyond it lacking; sternites with a trapezoid of naked tubercles o 
basal ring, posterior pair the closer together; a trapezoid of larger setiferous tubercles o 
posterior ring, anterior pair the closer together; posterior punctures each having two setae 
with an additional slender seta laterad of these in the lateral dark stripe; dorsum of segmen 
6 (Plate LX XXIII, 450) with posterior pair of tubercles replaced by two powerful lobe 
directed caudad and laterad; segment 7 unarmed on dorsum, sternum with two acute spine 
near caudal margin; segment 8 with lateral angles produced dorsad into slender lobes whic 
are spinous on all the faces; caudal angles directed caudad into slender lobes, acute at tip 
and with anterior inner face spinous and bearing a few setae. Male cauda with sterna 
valves very blunt and rounded, on either side of ventro-median line produced caudad into a 
acute spine. Female cauda with dorsal acidothecae a little longer than the more slende 
sternal valves, both pairs much exceeded by caudal angles of eighth segment. 
Nepionotype— Larva, Denmark. 
Neanotype.— Pupa, Denmark. 
Paratypes.— One larva and one pupa. 
(The writer is indebted to Dr. C. Wesenberg-Lund for this material 
as well as for several other interesting European crane-fly life histories. § 
Genus Cylindrotoma Macquart (Gr. cylinder + I cut) 
1834 Cylindrotoma Macq. Suit. 4 Buff., vol. 1, Hist. Nat. Ins., Dipt., p. 107. 
Larva.— Body covered with simple tubercles, a median dorsal row and a double ventr 
row. Spiracular disk large, surrounded by small lobes. Head capsule compact. Mentu 
with about fifteen teeth. 
Pupa.— Pronotal breathing horns short, cylindrical, directed strongly ventrad. Mes 
notum with two flattened lobes directed cephalad. Abdomen unarmed with spines or lobe 
Cylindrotoma is a small genus including six species distributed thruou 
the North Temperate Zone, three of these species occurring in Nort 
America. 
