336 [October 



elongated and envelops the retractile head like a hood. On the side 

 of the body and just behind e:ieh spiracle is a naked pyriform capitate 

 tubercle. On each side of the body are three rows of sphericle tuber- 

 cles from which arise dense bunches of soft hairs, meeting over the 

 median line of the body in a dorsal ridge. The sides are also thickly 

 clothed with longer silky hairs, those below being stifFer and more ver- 

 ticillate. This arrangement of hairs gives a convex form to the upper 

 side, while beneath the body is flattened. 



There are seven pairs of abdominal or felse legs which are short and 

 thick. The first pair of thoracic or true legs are much shorter than 

 the two succeeding pairs. 



The cocoon is long cylindrical, its texture is dense, being formed of 

 the hairs of the larva, closely woven with silk. When the pupa, which 

 is very thin, is about to transform it escapes from the cocoon, as the 

 cast skin is found with the tip of the abdomen remaining in the cocoon. 

 In this respect the genus closely resembles the pupae of the Cochlidi- 

 anfe. 



Dr. Fitch remarks that " Mr. Westwood's generic name, Tridietra, 

 was published the year before Dr. Harris' name, Lagoa.'' p. 46. 1 

 find this entry in Agassiz's Nomenclator Zoologicus, " Trichttra 

 White in 'xrey. Journals of two Expeditions of Discovery in Northwest 

 and Western Australia. II. (477), 1841." 



Dr. Clemens' Phnda laniirjinom^ described from imperfect specimens, 

 seems to be closely alHed to the L. crispafa, but additional specimens 

 from that locality must be obtained before deciding the question of the 

 identity of the two species. 



Subfamily Cochlidi^ Hiibner. 

 EUCLEA, Hubner. 



Head square in front, scales long, dense. The clypeus when denuded 

 is broad, narrowing in front. Antennne three-fourths as long as the 

 fore wings, pectinated on their basal half, well scaled; in 9 entirely 

 simple, scaled beneath. Mandibles prominent seen from above. Maxillae 

 nearly obsolete. Labium large, rounded anteriorly. Palpi large, por- 

 rect, extending a little beyond the front; the third joint is conical and 

 concealed by the hairs on the tip of the middle joint. 



Thorax thick and densely pilose. The primaries are a little shorter 



