THK SOrTllKHN PINK SAWVKK. 



47 



thorax). Larvro which (lov('h)p into the smaller sized a(kilts are, of 

 course, much smaller than this at maturity. The })ocly is divided 

 into 14 well-marketl segments. The first is the head. The following 

 three constitute the thorax, the first heing the ])rotliorax, the second 

 the mesotliorax, and the third the metathorax. The following 9 seg- 

 ments constitute the abdomen, and are desig- 

 nated as the 1st, 2d, 3(1, etc., abdominal seg- 

 ments. The last segment is calletl the anal 

 segment. The head (fig. 16, a) is considerably 

 longer than broad, and is capa])le of being 

 deeply retracted into the thorax. The i)ro- 

 thorax, upon the anterior part of the upper or 

 dorsal surface, is smooth and shining, ])ut the 

 posterior part has an opaque leathery appear- 

 ance. This opaque surface is dotted over by 

 small shining spots more or less longitudinally 

 elongate in shape. The mesothorax is smooth 



upon the upper or doreal surface, but on the lower or ventral surface 

 is found a double transverse row of fine fleshy granules. On the ex- 

 treme anteriorportion of the side of this segment isfound a transverse, 

 oval, brown spot. This is the first spiracle or breatliing pore. On the 



Fio. 15. — The pine sawyer. Epg, 

 f,'rea11y enlarpeil: a, Chorion; 

 b, amnion; c, micropyle; e, 

 sanie, highly magnified; d, 

 .sculpture of chorion. (Orig- 

 inal.) 



Fio. 16. — The pino sawyer. Larva, slightly enlarged: a, Forepurtof head; 6, second 

 abdominal segment; c, abdominal spiracle, a, b, Greatly enlarge<l. (Original.) 



metathorax a doubles transverse row of granules occurs, both on the 

 dorsal and on the ventral surface, but there is no spiracle upon this 

 segment. On the fii-st 7 abdominal segments there are 4 rows of 

 granules on the dorsal surface (fig. 10, h), and 2 on the ventral. The 



