EEV. A. E, EATON OX RECENT EPHEMEEID.E OE MATELIES. 185 



segments very light yellow-ochre or yellowish white, with the usual pair of linear streaks 

 in the 8th segment and two corresponding spots at the base of the forceps in the 9th 

 segment, Indian red. Setai white, with some of the joinings narrowly greyish. Legs 

 and wing-netiration whitish, the femora faintly tinged with yellowish distally, their 

 reddish markings reduced to an almost invisible dot in the hinder femora, and an almost 

 obHterated band in the fore femur. 

 Sab. Italy, at Legnano (26 July). 



6 . Variation 4. Turbinate eyes dull yellow-lake. Notum piceous. Otherwise very 

 similar to Vars. 1 and 3. 



Kah. Tessin; above Locarno (1670 feet, 15 May 1884), several examples. 



S . Rather variable in general coloration ; sometimes luteous or lutescent, with a 

 rosy suffusion, sometimes of a rosy fawn-colour or rosy-grey, and liable (whatever the 

 prevalent tint may be) to a more or less extensive infiltration of chlorophyll in parts of 

 the head, thorax, and abdomen, and in their appendages. Eyes olivaceous, traversed by 

 two dark stripes ; vertex of head with a red or red-jiurple stripe on each side from the 

 lateral ocelli along the orbits of the oculi to the occipital margin ; a quadrangular double 

 spot of the same colour in the middle of the pronotum. Meso- and metanotum some- 

 times variegated with light fuscous, sometimes uniformly luteous or piceous. The 9th 

 dorsal abdominal segment is either lighter or darker in colour than the others ; segments 

 2-8 have reddish or piceous markings on a lighter ground-colour, viz. : — a longitudinal 

 tapering median streak from the base to about the middle of the dorsum of the segment, 

 or a continuous linear stripe down the middle of the back ; also sometimes a transverse 

 marginal band across the tip of the segment (but this is exceptional) ; also an unequally 

 bifid spot on each side extending from the base to the tip of the segment (or at least as 

 far as the distal joining), the longer upper division of which tapers upwards and back- 

 wards either as a curved linear stripe, or more usually, as a curvilinear trilateral, while 

 the smaller lower and linear division runs nearly horizontally a little above the spiracular 

 line ; the curved stripes last mentioned coalesce with the distal median marginal baud 

 (when that is present) and, being met by the corresponding stripes of the contiguous 

 segments, form together with them a kind of chain pattern along the back. All of the 

 ventral segments (excepting the last two) are bilineated longitudinally with reddish or 

 piceous, but the 9th segment has two dots at its base in the place of the stripes ; the 

 former segments commonly have an abbreviated longitudinal dark line on each side at 

 the base, close to the spiracular region, which is sometimes joined by a narrow band to 

 the adjacent linear stripe so as to form an L-shaped mark. Setae usually coloured as in 

 the s , or with the ground-colour reddish white ; but, in some examples, at a short 

 distance from their origin they become more strongly annulatcd, the dark colour occujiy- 

 ing the whole of every alternate joint and some portion of the extremities of the otlier 

 joints. The legs are more strongly marked than in the 6 , and when tinged with 

 yellowish the fore femur is of a gamboge or yellow-ochre changing to light brown ochre 

 in dead specimens ; the hinder femora are of a light amber-colour, and the tibite and 

 tarsi are of an extremely light brown-oehre or testaceous hue. The wing-membrane 

 from the costa to the radius, and in the distal extremity of the area enclosed between 



SECOND SERIES. — ZOOLOGY, VOL. III. 25 



