AMERICAN COLEOPTERA. 31 



which are numerous short and stout spinules. Anterior to the spines 

 are numerous short bristly hairs and along the posterior margin of 

 the segment two groups of short stout spinules similar to those around 

 the base of the two spurs. The next three segments are gradually 

 narrower and are relatively longer than the segments 1 — 4. The 

 ninth segment is very short and much narrower than the eighth and 

 has moderately long fimbria; at the sides of tip. The anal segment is 

 entirely corneous and rather densely fimbriate. 



Spiracles. — There are nine pairs of spiracles. The anterior is 

 situated under the margin of the prothoras behind the base of the 

 anterior coxa, and is much larger than the others. The other spiracles 

 are in the abdominal segments I — 8, and are situated in th-e side of 

 the segment, in front of the middle and in the deep fold which is 

 nearest the dorsal aspect of the segment. 



Legs. — The anterior and posterior pair are of equal length the 

 middle somewhat shorter. The coxae are conical and prominent and 

 nearly equal to the rest of the leg. The second piece appears to be 

 composed of a connate trochanter and femur, the separation indicated 

 by an oblique impression and a feeble subangulation on the lower 

 margin. The tibia is short, slightly conical and rather densely 

 fimbriate and with a short tarsal piece from which arise two un- 

 equal claws. 



For this larva science is indebted to the researches of Mr. E. W. 

 Guild of Manhattan, Kansas. From his letters I transcribe the fol- 

 lowing notes : 



"The burrows are found in all gradations of surface, from a perfect level 

 to a nearly vertical face, but are in greatest numbers in slopes of about 30°. 

 They are very noticeable from their large size and occurrence in clusters. Dry 

 clayey banks are preferred and all the burrows I have examined enter at right 

 angles to the surface of the soil and remain straight for three-fourths of their 

 length then gradually curving. It is not unusual to see the larvfe after sun- 

 down or earlier if the day be cloudy. They are however very shy and I know 

 of but one specimen being taken without considerable digging." 



The burrows vary in depth from fourteen inches to three feet. 



In this larva Dr. Leconte has recognized that mentioned by him 

 (Ann Lye. iv, 1845, p. 143), as the larva of Pasimachus. All refer- 

 ences to the larva of the latter must now be expunged. 



Omus Dejeani, Eelche. 

 Color yellowish white, head piceous, prothoracic scute pale 

 castaneous. 



Form cylindrical, slightly flattened, head and thorax flexed at a 



