Feb., '08] ENTOMOLOGICAL NEWS. 77 



A new Antsota from Arizona (Lepidoptera Hetero- 

 cera, Ceratocampidae). 



BY C. R. BIEDERMAX. 

 A. skinneri n. sp. rf . 



Form that of A. virginiensis. Antennae, head, thorax and abdomen 

 a deep rich ochreous yellow. Primaries reddish brown, spot on discal 

 area silver white, i mm. square, basal corners slightly rounded ; 4 mm. 

 from the external margin and parallel to it runs a narrow bluish band. 

 Costal margin marked by a dull brown band I mm. wide. Secondaries 

 a rich purple brown, somewhat lighter at the costal margin, deepest at 

 the base. Underside : abdomen, two-thirds its length from thorax nearly 

 naked, grayish brown; primaries same as upper surface except lirrbal 

 area, which is a dull grayish brown, discal spot dull white ; seconda- 

 ries dull grayish brown, with basal patch of purple brown. Expanse 53 

 mm. The female is much larger, expanse 71 mm., of lighter color and 

 marked in the same manner. 



Life-history of Anisota skinneri : Eggs found on August 2oth 

 hatched September ist~5th inclusive. Young larvae grayish- 

 brown, naked, 2 mm. Commenced to feed 4 days after emerg- 

 ing. Changed to reddish-brown September loth. Changed 

 to dull red September i3th. September i6th skin shows 

 tiny ridges like paper crumbled up and smoothed out again. 

 This form of skin stays to time of pupation. First pupa- 

 tion September 2gth, last October 5th. No moulting what- 

 ever ; no spinning of cocoon. Chrysalid naked in the loose 

 ground 2 to 3 inches under surface, sandy earth preferred 

 with a layer of dead leaves on top. They cease feeding and 

 wander aimlessly around cage, color fades to a reddish clay 

 and anal portion and head shrink towards center with slight 

 swells. My experience of last year teaches me that this larva 

 when freely handled will wander about, feed very irregularly 

 and little, and finally die ; of 22 I saved only 2. This year 

 they were not handled and all but one went underground. 

 Food, black (live) oak. 



Average length of grown larvae 56 mm. The emerged larva 

 shows no spines at first, but elevated dark punctures where 

 they grow afterwards. Adults emerged last year August 5th. 



IN Science for January 24, 1908, is a brief statement of the aim and 

 methods of the Concilium Bibliographicum. 



