Pycnogonids Collected During the Sum- 

 mer of 1917 at Laguna Beach 



UII.l.IAM A. HILTON 



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

 creatures, Init 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. 



Lecythorliynclius marginatus Cole. One with eggs, date.' Some young, in all 3S, 

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



Ammiilhella luhirculala Cole. In August S specimens. No eggs. Sept. 1, 7 under 

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



A. hi-uiiijiiiiulala var. calif iirnica Hall. During July 4 specimens, one with eggs. 

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



Ammothetta 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 Sabetlaria californita. 



A minolhlliella spinifera Cole. Five specimens with eggs under stones during 

 August, one specimen without eggs. 



Tanystylum iuli-rmeJiiim 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. orhuulare Wilson. One specimen with eggs under stone. August. Eight 

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



Ctotenia oiiuientatis Cole. One specimen with eggs and young dredged, Aug. 27. 

 One specimen without eggs. 



AnuploJaitylus califurnuus Hall. One without eggs dredged August 27. One 

 under a stone, August. No eggs. 



PlinxiihiUdinm jemoratum Cole. Sept. 1st, one immature. 



Ualosiima viridentestincilis Cole. Ainong Bryozoa and under stones. Aug. 19, two 

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



EuryJ'ue 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 speciinens obtained from the holdfast, 

 the species seems to be from deeper water. 



I'yinoyiinum sternsi Ives. Sept. 2, four young under stones. Sept. 3, one young. 



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

 found, a single specimen well inshore. 



Species living among colonies of Sabillaiia lalijurnica were: 



A mmotliella hi-inujuiculata var. califonina Hall. ./. spinussima Hall. 



Deep water forms seem to be: C. ocriJerila/is, A tatifnrniius and E. spinusa. 

 (Contrihulion from the Xitnlogical Oepartmcnl itj Pomona ('.ollegej 



