The abdomen is gray, marked on the upper side with three or four pairs of darker spots and behind with lighter spots, somewhat like Theridium tepidariorum.
On the hinder half of the abdomen are three or four pairs of very indistinct transverse markings.
The cephalothorax has a light gray band in the middle, and the abdomen a middle dark band broken at the sides by three or four pairs of light spots.
On the abdomen are three or four pairs of light spots near together in the front half, and behind are two rows of spots meeting over the spinnerets.
Spines in opposite pairs in three diameters, crossed in the common centre, straight, cylindrical, pinnate, with three to four pairs of opposite lateral branches or regular pinnulae.
In the sixth pair, however, the segments support only three pairs of main spines: but the specimen was not very large, and probably in old specimens there would have been four pairs.
In young individuals, there are only three pairs of main spines on the segments of the sixth pair, instead of four pairs.
The segments in the latter vary in bearing either three or four pairs of main spines.
The three posterior pairs have protuberant segments, each supporting three or four pairs of short, strong, main spines, with a small intermediate tuft: the dorsal tuft is small.
Several slivers of cotton from the Card were put up together at the back, and by means of four pairs of drawing rollers, were reduced to the thickness of one sliver (see the description in chapter vi.
The number of pairs of appendages is that determined by Walcott from longitudinal sections, namely, four pairs on the cephalon beside the antennules, thirteen pairs in the thorax, and nine pairs on the pygidium.
This is shown in their great length, the double curvature of the antennules, the differentiation of four pairs of endobases on the cephalon as gnathites, and the flattening of the segments of the posterior endopodites.
In forms with a long hypostoma, however, there was no room on the cephalon for the attachment of four pairs of gnathites, neither were there enough appendifers to supply the requisite fulcra.
Four pairs of feathers are arranged symmetrically on the circumference of this design.
Four pairs of hawk-feathers are arranged symmetrically on the circumference of the shield.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "four pairs" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
