1879.1 103 



and glossy, the lobes on the crown well-defined by the margin o£ pale 

 skin from the blackish-brown shining plate on the second segment, 

 another plate less dark occurs on the anal flap, and there are two 

 remarkable additional horny plates situated one on the outer side of 

 each anal leg ; the rest of the body is without gloss, and of a light 

 drab colour broadly tinged with pink down the back and sides, becoming 

 a little paler on the belly, or a pinkish-fawn colour, or pinkish-brown, 

 as individuals differ, and having a dorsal line and subdorsal lines of 

 deeper pink, but interrupted at each segmental pale fold of skin ; a 

 pinkish lateral line runs a little above the spiracles, these are rather 

 large in proportion and blackish-brown, the tubercular dots incon- 

 spicuous, though their positions are indicated each by a minute bristle, 

 when seen through a lens. 



A variety occurs of a pearly pinkish-grey ground colour, and 

 another variety with rosy-pink melting gradually into reddish-fawn 

 colour on the hinder segments, and having the anterior plate dark only 

 at its hind margin, quite light brown in front with a fine paler dorsal 

 dividing line. 



The pupa is of a dumpy form, five-sixteenths of an inch long ; 

 the thorax very plump and rounded off to the moderately produced 

 head, the wing-covers long and tumid, having their neuration in slight 

 relief, from them the abdomen rapidly tapers in the female to rather 

 a sharp point furnished with two minute bristles ; in colour it is 

 brownish-ochreous with darker brown divisions of the flexible segments 

 of the abdomen, the surface glistening. It is generally enclosed in 

 an earthen-covered silken cocoon attached to a small stone or other 

 substance, though sometimes the cocoon is spun within the remains of 

 a seed-capsule eaten out by the larva, where it becomes partly adherent 

 to quantities of frass. 



Emsworth : August '7th, 1879. 



DESCRIPTION OF A NEW SPECIES OF PHTLLOMACROMIA 

 (CORDULIINAJ FROM WEST AFRICA. 



by baeon e. de selts-longchamps. 

 Ph. contumax. 



$ . Length of abdomen, 58 mm. Length of posterior wing, 47 mm. 



Form of Ph. trifasciata, but much larger. 



Wings slightly tinged, with a scarcely perceptible vestige of ochreous at the base ; 

 neuration black, costal nervure finely yellowish externally ; pterostigma small, black 

 (2| mm. long), surmounting nearly 2 cellules ; membranule large, blackish ; 18 — 19 

 ante-cubital and 7 — 8 post-cubital nervules ; 4 hypei'trigonal nervulea ; a single row 

 of post-trigonal cellules ; 6 — 7 median nervules in the anterior-wings. 



