ILaguna e@arine laboratory 97 



mented, situated at the top of a relatively small eye-tubercle, the 

 length of which is about twice its diameter. The abdomen is about 

 three-fourths the length of the body, (the latter measured from the 

 anterior margin to the base of the abdomen). Along the top of the 

 abdomen is a row of ringer-like, multi-sj due-bearing processes similar 

 to those on the legs to which I will refer shortly, but much smaller 

 than the three large ones previously mentioned as on the back. The 

 diameter of the abdomen is about one-fifth its length. The chelifores 

 are stout and slightly surpass the proboscis in length ; they are rudi- 

 mentary in having the chela? undeveloped. The shaft is set with quite 

 a few multi-spine bearing processes. The basal segment is about the 

 same size as the terminal segment, but the shaft is one and one-half 

 times as long as their combined lengths. The palpi are nine-jointed, 

 surpassing the end of the proboscis by one-third their length. The 

 first joint is shorter and broader than the rest; the second is the 

 longest, being almost one-third the whole length of the palpus; third 

 joint very short ; fourth joint not quite as long as second. A ridge 

 across the fourth joint makes it appear like two joints as viewed 

 from above. The terminal joints diminish in order. The first six 

 joints have very few hairs, while the terminal joints are thickly set 

 with hairs about as long as the diameter of the fourth joint. The 

 second joint is thickened at the ends but the other joints are not 

 noticeably so thickened. The average diameter of the palpus is 

 about one-half that of the chelifores. The ovigerous legs are nine- 

 jointed; their diameter about half way between those of palpus and 

 chelifores. The joints in order of length (except the first, which is 

 short and broad), 4, 2, 5, 3, 6, 7, 8, 9. Legs are rather short and 

 powerful with numerous, multi-spine-bearing, finger-like processes, 

 especially on the coxa and two tibial joints. On the two tibial joints 

 these processes are arranged in a double row down the back of the 

 joint. The first and third coxal joint are sub-equal in length, the 

 second one and one-half times as long. The femur is as long as the 

 combined length of all three coxae ; the tibial joints two-thirds as long 

 as the femur and but slightly longer than the tarsus. The claw is 

 over three-quarters the length of tarsus, folding down between two 

 rows of stout spines on tarsus. No auxiliary claws. Genital open- 

 ings not apparent. Color light straw. Measurements in mm. : 

 Proboscis 1.424; body 1.2; abdomen 1.1; leg 6.35; diameter of lateral 

 processes .5. 



This single specimen was swept from fucus in July and when 

 taken, was so covered with litter which was imbedded among the 

 spines, that no idea of the real aspect of the creature could be ob- 

 tained until after boiling in KOII. This litter rendered it very hard 

 to find among bits of fucus even when we knew it was there and its 



