SCIENCE. 



4i 



from its anterior surface an extra branch of six joints. 

 The first joint of this antenna is much stouter than 

 the corresponding joint on the left side. The second 

 about half as long as the first and as stout. The 

 outer half of the anterior border is flattened to receive 

 the first joint of the abnormal branch. From its end 

 arises the regular branch of nine joints, all of which 

 are normal except the first which gives off near the 

 middle of its posterior border a slender spine-like 

 process, half as long as the joint itself, curving out- 

 ward and backward. The abnormal branch which is 

 composed of six joints is directed forward and out- 

 ward. The first three joints are flattened and very 

 wide proportionately, the last three cylindrical. The 

 first joint is about as long as the one which bears it 

 and at its base about half as wide as long but consid- 

 erably wider at tip. The next joint is a little nar- 

 rower than the tip of the first. Its length about 

 equals its width. The third is one-third narrower 

 than the second and almost twice as long as wide. In 

 the figure it is represented as folded upon itself. The 

 fourth joint is somewhat longer than the third and 

 half as wide, almost twice as long as the fifth which 

 bears the sixth a long slender joint which curves in- 

 ward and is as long as the fourth and fifth together. 



PRIONUS CALIFORNICUS, Motsch. 



Fig. 12 represents in a specimen of Prionus cali- 

 fomicus one of the most remarkable monstrosities that 

 has probably ever occurred among Coleoptera — 

 remarkable not only for extent but also for symmetry. 

 The left maxillary palpus bears two terminal joints. 

 In the right maxillary and the left labial palpi the 

 terminal joint is bifid. Each femur bears two tibiae 

 furnished with tarsi and claws. The second joint of 

 the left maxillary palpus appears to be composed of 

 two joints closely connate, the anterior one much 

 shorter than the other, each bearing a terminal joint 

 of somewhat unequal lengths, as shown by fig. 12 a. 

 The terminal joint of the right maxillary palpus is 

 deeply cleft at apex representing two joints connate 

 at their basal halves; fig. 12b. The terminal joint 

 of the left labial palpus gives off anteriorly from its 

 base a second joint half as long and as stout as the 

 other and connate with it ; fig. 12 c. The antennae 

 are normal. The anterior femora are normal in 

 length and in articulation with their coxae. They 

 gradually widen from base to apex where they are 

 more than twice as wide as a normal femur. Rhom- 

 boidal in section ; the superior surface about one- 

 third narrower than the inferior. The apices are 

 dilated and deeply notched vertically, making two 

 processes about as long as wide, each containing a 

 normal cotyloid cavity with which the tibiae are articu- 

 lated in a normal manner. Fig. i2d, shows the 

 femur and articulations as seen at the end. Of the 

 tibiae the anterior is somewhat shorter and about two- 

 thirds as stout as the posterior, which is probably the 

 normal one. The spurs, tarsi, and claws of both are 

 similar. The middle femora are normal in length 

 and form but about one-half stouter. The apices 

 each contain one large cotyloid cavity. Into this, 

 which is twice as wide as a normal one, is inserted a 

 single broad condyle formed by coalescence of the 

 condyles of the two tibiae is shown in fig. 1 2e. The 



anterior of these is somewhat shorter and about two- 

 thirds as stout as the posterior. Its tarsi are more 

 slender and a little shorter. The articulation of the 

 tibiae with the left posterior femur is identical with 

 that of the middle femora ; fig. 12c The anterior 

 of the two tibiae and its tarsus are about five-sixths 

 the length of the posterior and one-half more slender. 

 In the right posterior femur the articulation with the 

 two tibiae differs from all the others. The femur it- 

 self is about equal in thickness to the left but is a 

 trifle more dilated at apex. This is not notched as 

 in the anterior femora, but truncate. Each tibia is in- 

 serted into a distinct cotyloid cavity separated by a 

 considerable interval; fig. i2f. The anterior of the 

 two has been unfortunately broken off about one- 

 fourth of an inch from the femur. The structure of 

 the under side presents no departure from the normal 

 standard. 



Collected by Mr. Morrison in Washington Territory. 



ELEODES PILOSA, Horn. 



In fig. 13 is shown a specimen of Eleodes pi/osa, 

 the right antenna of which is deformed ; the ninth 

 joint bearing on its end two branches of two joints 

 each. Fig. 13a, represents the antenna enlarged. 

 The first seven joints are normal. The eighth and 

 ninth equal each other in length, being slightly shorter 

 than the seventh. The eighth is as wide as long. The 

 ninth at base is as wide as long ; at the middle almost 

 twice as wide. From the anterior part of the end 

 arises a branch of two joints which are flattened, 

 almost connate and a little more than half as wide as 

 the ninth joint and as long as wide. The last joint is 

 sinuate at tip. From the posterior part of the end of 

 the ninth joint arises a branch also of two joints 

 which equal in length those of the other branch but 

 are more cylindrical and more nearly resembling nor- 

 mal terminal joints. 



From Nevada. In Dr. Horn's Cabinet. 



HELOPS SULCIPENNIS, LeC. 



Fig. 1 4 represents an anomaly in the right maxillary 

 palpus of a specimen of Helops sulcipennis. Fig. 14a, 

 shows the normal palpus. The anomaly consists in 

 the second joint bearing two terminal joints, one from 

 the outer end of the anterior border and one* from the 

 tip. The first joint of this palpus is normal. The 

 second nearly so excepting a dilation and flattening 

 of the anterior border into which the terminal joint 

 is inserted. The latter joint, which in the figure is 

 represented as seen from below, is foreshortened as 

 its plane is nearly perpendicular to the plane of the 

 palpus proper. When viewed from the side it is pre- 

 cisely similar to the terminal joint in fig. 12a. The 

 other joint which arises from the tip of the second is 

 really made up of two joints soldered together at the 

 bases of their broad surfaces. It is consequently 

 twice the thickness of the other terminal joint and at 

 its free edge deeply grooved indicating the union of 

 two joints, and presenting that silky appearance com- 

 mon to the free edge of the normal joint. It is 

 shown in the figure as seen partially from below, par- 

 tially from the side. The parts shaded are intended 

 to represent the edges of the two joints in one, the 

 dotted part the deep groove. 



In Dr. Horn's Cabinet. 



