THE NAUTILUS. 97 



PUBLICATIONS RECEIVED. 



THE GRAY GARDEN SLUG WITH NOTES ON ALLIED FORMS. By 

 A. L. Lovett and A. B. Black. Bulletin 170, Oregon Agricul- 

 tural College Experiment Station, pp. 1 -43, pis. I-IV, text fig- 

 ures 1-14, June, 1920. 



Under the above title two entomologists have given one of 

 the most instructive accounts of the "garden slug, Agriolimax 

 agrestis, the greenhouse slug, Milax gagates, and the reticulated 

 slug, Prophysaon andersoni," which has probably appeared. 

 The paper deals particularly with the depredations of these 

 mollusks, methods of control, life history, etc. The technical 

 descriptions of anatomy are quoted from such well recognized 

 authorities as Taylor (Monog. Land and Fr. Water Moll, of the 

 Brit. Isles, Vol. II, 1907) and Pilsbry and Vanatta (Proc. Acad. 

 Nat. Sci., Phila., 1896 and 1898). Many original observations 

 on the food and breeding habits are given. It was found after 

 much experimentation that Bordeaux mixture made an excel- 

 lent repellent to prevent slugs from entering restricted areas and 

 a poisoned bait of calcium arsenate on lettuce was the best erad- 

 icator. The three species are shown lifelike in six beautiful 

 colored illustrations on Plate I. 



From the standpoint of the conchologist there is little to 

 criticise. The spelling of the specific name andersoni with a 

 single "i" might be mentioned since Cooper used two in his 

 original description. Also citations of reference are sometimes 

 too brief for ready location. A partial bibliography is given on 

 page 43. 



I think our chief regret should be that workers from another 

 field should have had to be called upon to contribute this valu- 

 able investigation. Most of the original information should 

 have been known long ago but it was not. This paper illus- 

 trates forcibly the great field of research on the life histories of 

 the mollusks whether they be land, freshwater or marine. It 

 is a subject which is practically untouched. Unfortunately 

 there have been no Fabres in conchology. G. DALLAS HANNA, 

 California Academy of Science. 



