339. _Scorpio, Sagittarius, and Ophiuchus._--During the summer months a brilliant constellation is visible, called _Scorpio_, or the _Scorpion_. The configuration of the chief stars of this constellation is shown in Fig. 394. They bear some resemblance to a boy's kite. The brightest star is of the first magnitude, and called _Antares_ (from _anti_, instead of, and _Ares_, the Greek name of Mars), because it rivals Mars in redness. The stars in the tail of the Scorpion are visible in our latitude only under very favorable circumstances. This constellation is shown in Fig. 395, together with _Sagittarius_ and _Ophiuchus_. _Sagittarius_, or the _Archer_, is to the east of _Scorpio_. It contains no bright stars, but is easily recognized from the fact that five of its principal stars form the outline of an inverted dipper, which, from the fact of its being partly in the Milky-Way, is often called the _Milk Dipper_. [Illustration: Fig. 395.] _Ophiuchus_, or the _Serpent-Bearer_, is a large constellation, filling all the space between the head of _Hercules_ and _Scorpio_. It is difficult to trace, since it contains no very brilliant stars. This constellation and _Libra_, or the _Balances_, which is the zodiacal constellation to the west of Scorpio, are shown in Fig. 396. [Illustration: Fig. 396.] [Illustration: Fig. 397.] 340. _Capricornus, Aquarius, and the Southern Fish._--The two zodiacal constellations to the east of Sagittarius are _Capricornus_ and _Aquarius_. _Capricornus_ contains three pairs of small stars, which mark the head, the tail, and the knees of the animal. _Aquarius_ is marked by no conspicuous stars. An irregular line of minute stars marks the course of the stream of water which flows from the Water-Bearer's Urn into the mouth of the _Southern Fish_. This mouth is marked by the first-magnitude star _Fomalhaut_. These constellations are shown in Fig. 397. [Illustration: Fig. 398.] 341. _Pisces and Aries._--The remaining zodiacal constellations are _Pisces_, or the _Fishes_, _Aries_, or the _Ram_ (Fig. 398), and _Cancer_, or the _Crab_. The _Fishes_ lie under _Pegasus_ and _Andromeda_, but contain no bright stars. _Aries_ (between _Pisces_ and _Taurus_) is marked by a pair of stars on the head,--one of the second, and one of the third magnitude. _Cancer_ (between _Leo_ and _Gemini_) has no bright stars, but contains a remarkable cluster of small stars called _Præsepe_, or the _Beehive_. Clusters.