no 



CONNECTICUT GEOL. AND NAT. HIST. SURVEY. 



[Bull. 



Gammarus annulatus Smith. 



1873. Gammarus annulatus, Smith, Rep. U. S. Fish. Com. 

 for 1871-2, p. 557. 



Eyes reniform, broader than in G. locusta. 



FIG. 27. Gammarus annulatus. 



Antennae less than one-third as long as body. First antennae 

 shorter than second; first joint of peduncle slightly longer than 

 second joint, third joint half as long as second; accessory flagel- 

 lum longer than second joint of peduncle; principal flagellum 

 slender, composed of about twenty joints. Second antennae with 

 stout gland cone, and third joint as broad as long, fourth and fifth 



