786 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 



UG. Geometrid caterpillar. 



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

 August 5, differs from a similar allied geuus on the pitch pine iu the 

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

 ing generally more variegated. 



Larva. — Body large, gradually iucreasiug in width from the bead to the aual legs, 

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

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

 rounded. On each side of each segment a transverse ridge, ending on each side in a 

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

 Lateral line rough and with small warts. Ou 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 prettily with dark and light flecks. 



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

 Length, 40™'". 



117. Geometrid caterpillar. 



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

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

 this baud 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, ou posterior part of body. Four dark piliferous 

 dots on tip of each abdominal segment, the two in 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. Phycid caterpii lar. 

 Order Lepidoptera ; family Piiycid-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 thiu 

 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 in a long, slender, twisted tube made of its cast- 

 ings lined with silk. Several attempts to carry the larvae through the 

 winter proved unsuccessful. 



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

 end. The head large, but notquile so wide as the prothorax, in 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 and 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 

 band which extends down the sides to just above the spiracles. The terminal tenth 

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

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

 16 to 17'"'". 



