Dolichoglossus Pusillus Ritter 



WILLIAM A. HILTON 



The writer first discovered the occurrence of Dolichoglossus in the sand flats at 

 Balboa Bav, in August, 1917. In one little cove they were found to be very abundant. 

 Large numbers of old burrows were evident in many places and the castings in some 

 places gave clear indications of many animals. In certain places they were the most 

 abundant animals. Specimens were collected once or twice a month for several 

 months, and a large number of tubes were examined for embryos. Eggs and young 

 of various stages were obtained at almost any time, so it seems quite possible that 

 there is no absolute breeding season. Further observations may settle this point a 

 little later. The sand cases or burrows are so delicate that they are easily broken, 



yet the best way to collect the eggs and adults seems to fix large numbers of the animals 

 within the cases and then later open the sand tubes and remove the specimens. In 

 some cases the living animals were taken within the tubes and later removed at the 

 laboratory. 



Other places where Dolicoglossus occurred were found to be on the mud flats the 

 other side of the bay from the first situation and in fewer numbers at Anaheim Landing. 

 Later a few were obtained under eel grass not far from the Laboratory at Laguna 

 Beach. 



(Contribution from the Zoological Department of Pomona College) 



