1893.J lUo [Packard. 



Length, 9 mm.; breadth, 5 mm. The body is broad, oval, somewhat 

 flattened, with two narrow dorsal ridges, which are a little wider apart on 

 the second thoracic segment, and in the middle of the body. The ridges 

 are irregular, wavy, crenulated and lemon yellow, uniting on the last 

 abdominal segment. From the ridges the sides of the body fall away at 

 a low angle forming a gentle declivity, on which are two alternating rows 

 of depressed lemon-yellow oval areas, bearing a minute depressed pit, a 

 sunken piliferous wart, without the seta. A series of scattered very min- 

 ute slender short hairs can be seen with a Tolles high-power triplet. On 

 the second thoracic segment the ridge and space between is filled with 

 bright red ; in the middle is a sunken pit, containing a small pale wart, 

 but not bearing a bristle. A larger subtrapezoidal red spot in the middle 

 of the body is edged with lemon-yellow, but the tubercle in its centre is 

 stained with reddish. Besides the median warts there are nine other 

 green ones along the middle of the dorsal ridge, one to each segment. 

 The segments are distinct enough to be counted. The general color is 

 pea-green, slightly more yellowish than the under side of the oak leaf. 

 The prothoracic segment is unspotted. The head is pale greenish, the 

 mouth parts pale chitinous. The skin of the body is in general rough and 

 corrugated, subgranulated. 



FdLL-GROWN LaKVA of HeTEKOGENEA (TOUTKICIDIA) TESTACEA PaCK. 



The larva (a (^) in shape much like that of the European Heterogeriea 

 asella, occurred September 8, on the under side of a beech leaf, at Bruns- 

 wick, Me. It spun its cocoon on September 10, and the moth appeared 

 on May 27 following. 



Larva. — Length, 11 x 6 mm. Skiflf-shaped, being oval in outline, with 

 the front full and rounded, but also rather blunt at the end, not pointed. 

 Dorsal surface full and convex, neither angulated nor keeled, as it is in 

 Limacodes scapha. On the anterior and also the posterior third of the 

 body are two nearly parallel, slight, irregular ridges, which are not so 

 distinct in the middle of the back, and which send out a red line, and 

 spreading out in the middle of the body form a broad red loop nearly 

 reaching the side of the body. The ridge at each end is a rich, bright 

 Venetian red, edged externally with yellow. The space between these 

 ridges is filled in with pale Indian-red almost exactly of the color of the 

 reddish-brown withered spots on the leaves of the same tree, as I espe- 

 cially noticed ; the mark is, in other words, a large faded reddish blotch 

 like a Greek cross, extending from end to end of the body, the lateral 

 triangular expansion or arms of the cross nearly reaching the sides. 

 There is a median dorsal row of impressed rounded warts, which do not 

 bear bristles, lor there are no fine hairs or setae on the body. From the 

 dorsal ridges the sides of the body fall gradually away to near the edge of 

 the body, where there is a much thickened rounded bead or ridge over- 

 hanging the edge of the creeping disk. On the sloping side are two rows 



PROC, AMER. PHILOS. 80C. XXXI. 140. N. PRINTED APRIL 13, 1893. 



