246 Transactions. — Zoology. 



is more solid than the dorsal cotton, and is quite conspicuous. 

 At gestation the insect forms beneath it an ovisac of usually 

 rather yellow cotton, the abdominal region becoming raised 

 up ; this ovisac in all the specimens observed was very short, 

 scarcely extending beyond the abdomen, yet it was clearly 

 complete and mature, for larvae emerged from it during three 

 weeks that the insects were under observation,' and its di- 

 mensions did not increase ; the cotton exhibits slight longi- 

 tudinal corrugations. The antennae are of ten joints, very 

 slightly tapering ; the three first and the last are the longest 

 and subequal, the others rather short and subequal. The feet 

 are rather strong and thick, but present no special features. 

 Epidermis bearing numbers of large circular multilocular spin- 

 neret-orifices interspersed amongst the long black hairs ; but 

 observation of several specimens did not show any tubular 

 spinnerets or glassy tubes. Observation has also failed to 

 show from what special organs or orifices on the dorsum the 

 columnar pencil of cotton is produced. The mentum is tri- 

 merous. 



Female of the second stage red, rather darker than the 

 adult, covered with patches of yellowish cotton ; form ellip- 

 tical, slightly convex ; length about T V n - Antennas of eight 

 subequal joints, slightly tapering. Epidermis covered with 

 long black hairs and multilocular spinnerets, as in the adult; 

 the marginal hairs form little tufts, one on each side of each 

 segment. At the abdominal extremity are six rather long 

 setae. 



Larva red, with dorsal and marginal rows of small tufts 

 of yellow cotton. Length about ^jin. Form subelliptical, 

 tapering posteriorly. Antennae of six joints, subequal except 

 the last, which is a large elongated club, and bears four very 

 long hairs. Abdominal extremity without anal tubercles, but 

 bearing six very long setae with tubercular bases. Feet long 

 and slender. Dorsal epidermis bearing four longitudinal rows 

 of circular spinnerets, also a row on each margin, and similar 

 rows of fine black hairs. 



Male pupa not observed. 



Adult male dark-red, the feet and antennae black. Length 

 of body about ^in., expanse of wings about lin. Antennae of 

 ten joints, of which the first two are short and tubercular, the 

 rest long and slender, and each constricted in the middle ; on 

 each joint after the second are two rings of long hairs. Eyes 

 prominent, semiglobular, numerously facetted. Abdomen 

 terminating in a short, straight, conical spike, and with two 

 long cylindrical processes, on the ends of which are several 

 long setae. Wings dark-grey, the nervures red; and there are 

 two longitudinal whitish narrow bands. 



Hub. In Australia, on Leptospcrmum Icevigatum. Mr. 



