462 TIPULIDJE. 



spines at the middle of this lower arm ; between this lower pair 

 of claspers is a small bristly organ, apparently the penis, and 

 below all the organs is a rather large ventral plate. In the female 

 the genitalia are also large and complicated, consisting of a pair of 

 nearly perpendicular sheaths, terminating in filamentous points, 

 and enclosing two internal lamella) and two bristly fleshy organs, 

 the whole being supported below by a ventral plate which 

 possesses a small appendage towards the tip, below. In both sexes 

 the genital organs are conspicuous and large, generally concolorous 

 or a little lighter in colour than the abdomen. Legs mainly 

 yellow, with black rings, pubescent ; coxae rather strong ; tro- 

 chanters rather well developed, half as long as the coxae : fore 

 coxae with some strong bristly hairs on the upperside: all coxae with 

 scattered short hairs ; fore femora with a few long hairs (longer 

 than the general pubescence) : middle femora with an irregular row 

 of short bristly hairs on upper and anterior sides, including several 

 rather longer ones placed near together towards the tip of the 

 anterior side : hind femora with four rows (one on each side, also 

 above and below) of long soft hairs : all the femora distinctly 

 broader at tip than at base ; fore tibae with a row of five or six long 

 equidistant bristly hairs on the front side, and a row on the outer 

 side: middle tibiae with a row of five or six bristly hairs on hinder 

 side, and a row of five or six on outer side : hind tibiae with a row of 

 ten or twelve stronger stiff hairs on hinder side, and a row of five or 

 six stiff long hairs on outer side, in addition to rows of longer, soft 

 hairs, which are also in addition to the general pubescence. All the 

 tarsi with some longer hairs ; hind metatarsus, which is as long 

 as the rest of the tarsus, with a row of five or six pairs of diverging 

 bristly hairs on outer side; 2nd, 3rd and 4th tarsal joints with some 

 longer hairs in sets of from two to four, on outer sides ; claws 

 black. In coloration, all the femora have two blackish rings on the 

 apical half, the tips also being uarrowlv black ; the tibia? have a 

 narrow ring in the middle and a rather broad one at the tip ; all 

 the tarsal joints are black-tipped ; all these rings on the legs 

 being variable in width and still more so in intensity. Wings 

 clear grey ; considerably iridescent ; costa very shortly bristly, 

 quite bare at base ; posterior margin of wing with soft short 

 hairs, longest at base of wing and shortest towards tip of wing. 

 1st longitudinal vein with a row of distinct, rather long bristly hairs 

 throughout its entire length, deflected suddenly downwards near 

 its base, shortly afterwards merged in the costa, just after the 

 origin of the 2nd longitudinal, which, distinctly before half the 

 distance from its origin to the wing-tip, turns up almost at right 

 angles to the costa ; the 3rd longitudinal springing from the 

 small cross-vein, nearly straight; the upper branch of the 4th 

 vein forked, the two prongs slightly divergent near base and at 

 tip ; discal cell rhomboidal, twice as long as broad, rather broader 

 at apical end ; posterior cross-vein exactly below middle of discal 

 cell ; the 5th and 6th longitudinal veins nearly straight, 7th 



