786 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 



116. Geometrid caterpillar. 



This caterpillar, which occurred on the white pine at Brunswick, 

 August 5, ditfers from a similar allied genus on the pitch pine in the 

 body having a pair of tubercles on each abdominal segment, and in be- 

 ing generally more variegated. 



Larva. — Body large, gradually iDcreasing iu width from the head to the anal legs, 

 and much warted. Head small, not quite so wide as the prothoracic segment, which 

 latter is narrower than the metathoracic. Head slightly bilobed, hemisphere well 

 rounded. On each side of each segnieut a trausverse ridge, ending on each side iu a 

 small black tubercle. On the third ring from the end the tubercles are near together. 

 Lateral line rough and with small warts. On top of metathorax is a transverse row 

 of seven small warts. General color, wood brown, slightly darker than the twig of 

 the pine, but tuberculated like one. Mottled preitily with dark aud light flecks. 



It is a genuine mimetic caterpillar. A sharp spine on hinder part of each anal leg. 

 Length, 40™"i. 



117. Geometrid caterpillar. 



Larva. — Head bilobed, each lobe rounded, front flat, with abroad transverse whit- 

 ish band, including the clypeus, aud tinged on the edge with reddish below ; above 

 this band the front is dark. Body rather slender, smooth, not wrinkled ; a large lat- 

 eral, smooth, rounded tubercle, low down on the side of second abdominal segment ; 

 the tubercle is dark brown, smooth, and white in front. Eighth abdominal segment 

 slightly humped dorsally. A pair of white dorsal dots on front edge of each abdom- 

 inal segment ; obsolete, however, on posterior part of body. Four dark piliferous 

 dots on tip of each abdominal segment, the two iu front more remote from the pos- 

 terior pair than usual. Spiracles forming a black ring. In appearance and color it 

 mimics a smooth light brown pine twig. Length, 25™™. 



118. PlIYCID caterpii lar. 

 Order Lepidoptera ; family Phycid.e. 



This caterpillar forms at the base of the terminal leaves of the pitch- 

 pine, in Maine and Rhode Island, through September into October, a 

 large mass of castings, sometimes 3 inches long, enveloped in a thin 

 light web. October 20 one was observed making a loose, thin, slight 

 web over the end of a branch, leaving its nest and crawling over it. 

 The larva also resides iu a long, slender, twisted tube made of its cast-- 

 ings lined with silk. Several attempts to carry the larva? through the 

 winter proved unsuccessful. 



Larva. — The body rather thick, a little flattened, not tapering rapidly towards the 

 end. The head large, but not quite so wide as the prothorax, iu which it can retract. 

 Head pale chestnut-brown, with jet black patches behind and on the sides ; two 

 elongate black marks on the middle of the vertex. Cervical shield concolorous, with 

 the head broad aud crescent-shaped. Each abdominal segment is divided transversely 

 behind the spiracle by a deep impressed line, while each portion of the segment thus 

 divided is finely wrinkled. 



The ground color is a pale chestnut with a broad dark subdorsal longitudinal 

 baud which extends down the sides to just above the sijiracles. The terminal tenth 

 segment is clear pale chestnut. Under side of the body aud feet pale chestnut with 

 scattered black dots. No dorsal tubercles, although the hairs are present. Length, 

 16 to 17™». 



