STATE GEOLOGIST. 185 



Bradya limicola. (Sp. n) 



Body flattened; free margins of the ^guients of the dorsal cara- 

 pace rather long; little separation between abdomen and thorax; 

 abdomen cylindrical, rather long; stylets short ; distal margin of 

 the segments spined ; antennae very short, 6- or 7-jointed, hardly 

 longer than the movable beak; second antennse much longer, 

 3-jointed; palp long, two-jointed ; mandibles palpate, teeth fine, 

 much as in Calanidee; palp bi-ramose, second ramus verj^ small ; 

 maxillae of moderate size; maxillipeds large, outer one as in Cala- 

 nidee; first four pairs of feet bi-ramose, each ramus 3-jointed ; fifth 

 foot small, with two terminal digitate processes and a seta ou either 

 side. The male is at least a third smaller and has longer caudal 

 stylets; the antennae are modified, but very short. The eyes are 

 ivanting in both sexes. This very interesting species was collected 

 in the brackish water of a ditch shaded by high sedges so that the 

 sun could hardly penetrate. I did not find any representative 

 of the genus in the open waters neighboring, but it is hardly to be 

 doubted that such exist. This species is quite distinct from Bra- 

 dya typica of north Europe. 



The only other blind copepod with which I am familiar is 

 Attheyella, which is circumstanced somewhat as the above. 



The European B. typica is pelagic; ours dwells in darkened 

 ditches and seems to furnish another illustration of the effects of 

 seclusion upon the visual organs, Brady seems to have transposed 

 the maxillipeds; these are really but branches of the same organ, 

 as shown by the development, and the outer ramus is, probably, 

 what Brady usually calls second foot-jaw but here first foot-jaw. 

 In the characters of the mouth parts and fifth feet our species 

 seems to show an affinity with the elongated higher copepoda. 



Ocean Springs, Mississippi. 



Caligus aniericauus, Dana and Pickering ? 



A species of Caligus was collected at dusk far out in Mississippi 

 sound in considerable numbers. The animals were floating in a 

 bank of vegetation and swam freely. They seem not to differ 

 greatly from the species described by Dana and Pickering in 1838 

 from the cod near New York. The fish lice are remarkable for 

 their flattened bodies and the paired sucking organs on the head. 



A species of Corycasus allied to C. variiis of Dana was also col- 

 lected. 



