294 



joints gradually decrease in length and thickness to the sixth or claw, 

 which is short, slender and hooked. There are 42 legs ; they are 

 slightly hairy, gradually increasing in length to the penultimate pair, 

 which are much longer than the preceding, but are far exceeded in 

 length by the last pair, which is not used for locomotion ; these are 

 tuberculate and bristly beneath, and the fourth and fifth joints of each 

 are armed along their length with a row of hooked spines pointing 

 forwards. 



Genus. — Scolopendea. 



This genus, like Julus, has 4 maxillae joined together to form the 

 labium, the inner pair being very narrow. The mandibles have seve- 

 ral small teeth, and are furnished with palpi. The first pair of legs is 

 transformed into the first auxiliary labium, which rests against the 

 maxilla}. The coxa?, thigh and tibia have each but one joint, but the 

 tarsus has a claw at its tip. The second pair of legs forms the second 

 auxiliary labium, which is very large, covers all the other parts of the 

 mouth, and extends beyond the sides of the head. The coxa and 

 thigh are each 1-jointed, and each has an interior denticulated lobe. 

 The tibia is composed of two very short joints. The tarsus is long 

 and curved. The third pair of legs, or the first organs of locomotion, 

 are like all the following pairs, and has 1 joint to the coxa, 2 to the 

 thigh, 2 to the tibia and 2 to the tarsus, besides the claw. — Savigny. 



Scolopendra cingulata. Each segment of the body has four parts, 

 which are wholly or partly divided by sutures, though in Lithobius 

 they are so closely joined as to form one. The middle suture is not 

 apparent on the three segments behind the head, but is indistinctly 

 seen on the hind margin of each following segment to the 20th, on 

 which it is slightly marked from the fore to the hind margin. The 

 two lateral sutures are manifest on every segment to the twentieth, 

 when they quite disappear. There is no middle suture beneath, but 

 those on each side are distinctly visible to the twentieth. 



Genus. — Glomeris. 



When it is rolled together only 11 segments are visible ; it does not 

 form a perfect circle, for the thoracic and caudal segments, the former 

 of which passes under the latter, present a level or somewhat concave 

 surface. When coiled up it lies on its side, and seems to rest on an 

 inclined plane, the middle of the back being more convex than the 



