226 RESEARCHES IN HELMINTHOLOGY AND PARASITOLOGY. 



In addition to ten new species described b}' Leidy, and already 

 referred to, four more species are described and figured in the manu- 

 script notes which appear in Mr. Crawley's original article, desig- 

 nated as follows : 



Gregarina xylopini. Proc. Acad. Nat. Sci., 1903, p. 47. 



Gregarina boletophagi . Proc. Acad. Nat. Sci., 1903, p. 47. 



Euspora bicani. Proc. Acad. Nat. Sci., 1903, p. 50. 



Asterophora cratoparis. Proc. Acad. Nat. Sci., 1903, p. 54.] 



[April, 1889. No. 575. See Bibliography.] 



A Parasitic Copepod. — Prof. Leidy remarked that last summer while 

 at Beach Haven, N. J., there was brought to him from the surf a 

 living specimen of the singular, transparent fish, Leptocephalus. In 

 examining it he observed attached to the tail-fin a minute copepod 

 crustacean, apparently of the genus Chalimns. The parasite was 

 attached by a long filiform rostrum and resembled in this and other 

 respects more the Chalimus scombcri, as represented by Baird, in 

 Fig. 5, Tab. xxxiii, of the British Entomostraca, than it does the 

 original of this species, as represented b}^ Burmeister in the Nova 

 ActaN. C. of Bonn, xvii, Tab. 23, Fig. 13. The species, which may 

 be distinguished as Chalimus tenuis, is considerably less than half 

 the size of C. scomheri. The cephalothorax, nearly twice the length 

 of the breadth, is obcordate and proportionately much narrower than 

 in the latter species. The frontal segment is narrow and not prom- 

 inent laterally, and the biarticulate antennae are concealed beneath. 

 The abdomen, half the length of the cephalothorax, exhibits three 

 conspicuous divisions, and the short caudal appendages end in three 

 minute setae. Abdominal feet ending in biramous leaf-like segments 

 fringed with short setae. Rostrum linear and almost as long as the 

 cephalothorax. Whole length 1.125 mm.; length of cephalothorax 

 0.5 mm.; breadth 0.275 ; length of rostrum 0.5 mm.;(?) length of 

 abdomen 0.25 mm. 



The accompanying outline represents the animal magnified forty- 

 four diameters. (Drawing.) 



[March, 1890 No. 585 See Bibliography.] 



Hypoderas in the Little Blue Heron. — Prof. Leidy stated that Dr. 

 B. H. Warren had submitted to his examination some pieces of the 

 flesh, with areolar tissue and fat, from two individuals of the Little 

 Blue Heron, Floyida carulea, through which were scattered a num- 

 ber of little egg-like bodies. These on examination proved to be a 

 Mite of the genus Hypoderas of Nitsch, of which a dozen species 



