694 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 



low sinus posteriorly, and with the sides projected inwards ; it consists of two series 

 of callous spots, the outer forming the limits of the area as above described, and the 

 inner series forming a simple transverse, narrow, lanceolate, oval spot. The callous 

 spot on the under side has a sinus in front, but slightly rounded behind. The one 

 on the seventh segment (below) is but little more than one-half as wide, with a 

 broad sinus on the hind edge, and with the sides directed obliquely inwards. Ter 

 minal segment very small, half as wide, and one-fourth as long as penultimate 

 segment. Nine spiracles, the first on front edge of second thoracic (mesothoracic) 

 segment. Length when fully grown, 1^ inches. 



This larva may be known from that^f Ehagium lineatum by its lack of any thoracic 

 feet and by its much longer, more cylindrical body, and differs at once by the 

 long, square head, that of Rhagium rounding in front; by the wider clypeus, and 

 proportionately wider and shorter labrum. The palpi and antennae do not differ 

 much. The callous spots on the abdominal segments are smaller and otherwise 

 different from those in Rhagium. 



Pupa. — The pupa is far advanced, being nearly ready to change to a beetle, the 

 body becoming dusky and horn-colored, while the characteristic dark spots have al- 

 ready appeared on the wing-covers. The antennse are coiled up three and a half 

 times at the end between the fore and the middle pairs of legs, and the genus may 

 be recognized by their great length and the deep excavation in the head between 

 them, as well as by the lateral short spine on the prothorax. 



The wing-covers in my single specimen reach to the third abdominal segment, and 

 are pressed obliquely to the side of the body. The salient portions of the upper side 

 of the abdominal rings are provided with fine spines. End of the body sinuate. 



In the absence of another pupa of this genus for comparison, additional character- 

 istics can not now be given. Length, three-fourths of an inch. 



Mr. George Hunt has taken both this species and M. scutellatus 

 »' coming out of the white pine " in July in northern New York and iu 

 Rhode Island. Prof. F. H. Snow records it in the seventh volume of 

 the Transactions of the Kansas Academy of Science as occurring in 

 the Baptist church in Lawrence, Kans., " where repairs had been made 

 with pine lumber." 



Although I have seen no specimens of the larva or of the beetle from 

 the Southern States, I have no doubt but that it is the larva of this 

 species which from North Carolina southwards is called the " sawyer." 

 Mr. Thomas C. Harris, of Raleigh, N. C, has informed me that a larva 

 of this description has killed many pines in that State. In June, 1884, 

 he sent me the following extract from a local paper, which bears on 

 this subject : 



We were informed by Maj. C. W. McClamray, of Scott's Hill, Pender County, that 

 the pine trees are dying in his own and other sections of Pender and New Hanover 

 Counties. It is supposed that it is the ''bore-worm" or "sawyers," which played 

 such havoc with the pines something over thirty years ago, that are operating upon 

 them now. Their ravages are not confined to the old trees, the young ones dying 

 just as rapidly and numerously. 



The following extract from the Scientific American refers to what is 

 with little doubt the species we are now considering : 



A correspondent of the Northwestern Lumberman says : It is not generally known, 

 yet a fact, that extensive and valuable forests of yellow pine in the Southern States 

 are destroyed by a worm, commonly called here at the South a "sawyer," or flat 



