161 



genera. Of these 116 genera, or more than half, are also found in the 

 Atlantic ocean, and thirty-two species are found both in the Atlantic and 

 in the Pacific. The genera having species in both oceans practically 

 all belong to one of three classes : First, Tropical genera; second, Arctic 

 genera, whose species are distributed throughout the Arctic seas; third, 

 Pelagic and other genera having a wide distribution. 



Among the remarkable additions made to the fauna of California during 

 recent years are the following: 



Bronchiostoma elongatum, which had been recorded but once, we have 

 found in large quantities at San Diego. 



Khinoptera encenad^e, based on a fragment of a jaw found at Encenada. 



Perkinsia, a new genus of herrings. 



Six species of Scopelidae. 



The albacore Euthynnus pelamys, whose nearest recorded habitat had 

 been Japan, was found at San Diego. 



On Indiana shrews. By Amos W. Butj-er. 



Among the smaller mammals is a group of small forms generally known as 

 shrews or mole mice. These are insect eating forms. They are little mouse- 

 like bodies. The snout is quite elongated, extending beyond the incisors 

 some distance. It is naked, and on its sides are to be found the nostrils. 

 Although these small mammals are very abundant they are not often seen. 

 They are doubtless most active at night but are not strictly nocturnal, for 

 examples are sometimes to be found moving about in the bright sunlight. 

 They feed upon such animal food as comes in their way, chiefly grubs, larvfe, 

 slugs, terrestrial insects. They are very pugnacious, following mice into 

 their nests and often attacking them. They also attack and kill each other, 

 eating the carcass. They eat almost any kind of animal food, but of 

 vegetation eat little. They are said to be fond of beechnuts, and will, 

 when starved to it, eat corn, oats, wheat and other grains. 



In confinement they have been known to attack and kill mice much 

 larger than themselves. Their eyes are small, and while not covered, they 

 can see but imperfectly. Their burrows may be found every wherrf beneath 

 meadow, pasture and lawn, under the accumulated vegetable mould of the 

 forest, or the collection of decaying weeds of the thicket. Anywhere and 



11 



