321 



Prolegs the same. True legs yellow, with black rings at the end of the 

 jomts. 



Length of full grown larva eight tenths of an inch. Head obtuse, 

 rounded, yellow, with two large, black, rounded spots above, a transverse, 

 black band before, and a smaller black spot each side, including the oceUi. 

 First segment with four dorsal and on each side four black dots and a 

 larger one in the region of the spiracle, second and third segments like 

 first, remaining segments each with four dorsal dots in two rows, two larger 

 lateral ones before and behind each other, the anterior of which is the larger 

 and more rounded. A similar row of large spots in line of spiracles, and 

 between this and the upper row several black dots, two or three to each 

 side ; below the spiracular row and the belly, spotted or dotted with black. 

 The sjDots on the tenth, eleventh and twelfth segments diminish and become 

 confused. Clappet edged with black. 



Chrysalis naked, simple, tail ending with a bifid spine, June 26. Winged 

 July 16, 1848. 



Geometra catenaria Drury. 



July 27, 1841. Larva on the wood-wax (^Genista tmctoria) near Salem. 



Legs ten. Attitude at rest like that of Hylernia defoliaria. Body thick- 

 est behind, tapering before, elongated. Head nearly hemispherical, in- 

 dented like a V on the fi-ont, but not above. First segment entire, unarmed. 

 Remaining segments simple. Color above and beneath bright lemon yellow. 



Head, first and last segments, and joints of the legs spotted with black; 

 the dots on the head being about ten. In two transverse rows, six and four, 

 not including two on the V-shaped part. On the Intervening segments 

 four longitudinal, slender, brown lines on each side, the lowest in a line with 

 the spiracles, and Interrupted by them and by spots corresponding 

 to them on the side of each segment. Four similar, longitudinal 

 lines below the spiracles on each side of the under or abdominal 

 surface of the segments. The spiracular spots on the first segment^'^- ^^■ 

 consist of two black dots ; on the second and third and remaining seg- 

 ments, to the eleventh inclusive, they are white, with two small, trans- 

 verse, black spots, one on each side of the white portion, and a black dot 

 just below the central white portion. The prolegs are on the ninth and 

 twelfth segments, or rather between the ninth and tenth, and on the twelfth. 

 Length one Inch and a half. 



Pupa white, Avith distinct, black, linear dots, and with the three middle 

 abdominal incisures orange yellow. Tail ending in two long, excurved 

 hooks, and with six other Incurved hooks in pairs before the extremity, — see 

 Fig. 45. 



OCCAS. PAPERS B. S. N. H. — I. 21 



