Pycnogonids Collected During the Sum- 

 mer of 1917 at Laguna Beach 



WILLIAM A. HILTON 



During the summer no particular attention was given to the collection of these 

 creatures, but all that were found were saved. Some places where they were known 

 to be abundant were not searched at all. In consequence of this, the larger forms 

 were especially obtained, especially those found under stones. There are a number 

 of new locality records. Something over 200 specimens were collected. 



Pallene californiensis Hall. One specimen Aug. 19. 



Lecythorhynchus marginatus Cole. One with eggs, date? Some young, in all 38, 

 most were found among stones, among muscles and a few in red algae. 



Ammothella tuberculata Cole. In August 8 specimens. No eggs. Sept. 1, 7 under 

 stones. Sept. 13, 2 specimens. Sept. 16, 8 of which three had eggs. In all 25. 



A. bi-unguiculata var. californica Hall. During July 4 specimens, one with eggs. 

 August, 11 with eggs, 21 without. September, 15 with eggs, 13 without. In all, 64. 



Ammothella spinossissima Hall. August, 2 with eggs, 16 others. September, 1 

 with eggs, 2 without. September 16, 3 without eggs. These last were found in among 

 the worm cases of Sabellaria californica. 



Ammoththella spinifera Cole. Five specimens with eggs under stones during 

 August, one specimen without eggs. 



Tanystylum intermedium Cole. July, six specimens in Bryozoa. August, 17, three 

 among alcyonarian colony. No eggs. August, 19, under stones, one with eggs, five 

 others. September 1, 14 without eggs, one with. Stones. 



T. orbiculare Wilson. One specimen with eggs under stone. August. Eight 

 among red algae, no eggs. September 1, 17 without eggs, four with eggs under stones. 



Clotenia occidentalis Cole. One specimen with eggs and voting dredged, Aug. 27. 

 One specimen without eggs. 



Anoplodactylus calif 'amicus Hall. One without eggs dredged August 27. One 

 under a stone, August. No eggs. 



Phoxichilidium femaratum Cole. Sept. 1st, one immature. 



Halosoma viridentestinalis Cole. Among Bryozoa and under stones. Aug. 19, two 

 with eggs, four others. Sept. 1, one with eggs, five others. 



EuryJice spinosa Hilton. One with eggs, August 17. Locality uncertain. Four 

 with eggs, one without, Sept. 17, 1917, from holdfast. 



This species was described from a specimen collected at Laguna Beach in Sep- 

 tember, 1915. Judging from the number of specimens obtained from the holdfast, 

 the species seems to be from deeper water. 



Pycnogonum sfemsi Ives. Sept. 2, four young under stones. Sept. 3, one voting. 



Nymphon sp. ? Sept. 1, one species of what apparently belongs to this genus was 

 found, a single specimen well inshore. 



Species living among colonies of Sabillaria californica were: 



Ammothella bi-unguiculata var. californica Hall. A. spinossima Hall. 



Deep water forms seem to be: C. occidentalis, A calif amicus and E. spinosa. 

 (Contribution from the Zoological Department of Pomona College) 



