KEVIEW OF GENUS ARGULUS MEEHEAN 



489 



in size may account for the difference in the structure of the ribs of the 

 suction cups. As far as can be determined niger is identical in every 

 respect. 



All specimens have been taken on the Pacific coast. They have been 

 found free swimming and on the surf perch, blue perch {Taeniotoca 

 lateralis), Sahno irideus, OncorhyncJvas Jdsutch, Hyper prosopon 

 argeneu.3. and Gymatoga^ter aggregatus. 



ARGULUS FLORIDENSIS, new species 

 FiGTJBE 29 



A single male specimen labeled A. pugettensis and found in 

 U.S.N.M. vial No. 77810 is entirely different from typical pugettensis 

 and will therefore be given a new name. It was collected by A. E. 

 Verrill in 1884 at Key West, Fla. The host is not given. 



FiGUKB 29. — Argulus floridensis: a, Respiratory areas; 6, ribs of suction cups; c, second 

 thoracic appendage (male) ; d, tbird thoracic appendage (male) ; e, fourth thoracic 

 appendage (male). 



Although the specimen is in poor condition, the following measure- 

 ments were taken : Total length 5.85 mm., length of carapace 4.88 mm., 

 width 4.28 mm., sinus 1.99 mm., abdomen 1.58 mm. long and 1.35 mm. 

 wide with the anal sinus 0.98 mm. 



The carapace is ovate, sinuses shallow, cephalic areas broad, eyes 

 small, widely separated; alae reaching abdomen. Abdomen ovate, 

 narrower at the top near the thorax, sinus deep, tips divergent, anal 

 furcae small and basal. Dorsal ridges very stout, bowed inward 



