42 Mr. H. J. Carter on Microscopic Filaridse. 



wards the tail, which is somewhat curved and obtuse at the 

 extremity. Mouth and anus as in the foregoing species. Vulva 

 in the posterior half of the body, a little in front of the union of 

 the posterior two fourths. 



Alimentary canal the same as in the foregoing species, but 

 without buccal dilatation ; the oesophageal sheath commencing 

 close to the oral orifice, and gradually increasing in diameter 

 backwards to its bulbous termination. Organs of generation 

 undetermined. 



Size. l-73rd of an inch long and 1- 1080th of an inch broad. 



Male. Unseen. 



Hab. Same as foregoing. 



Loc. Island of Bombay. 



The next species are all from salt or brackish water in the 

 marshes of the island of Bombay. 



Urolabes erythrops, n. sp. PI. III. fig. 29. 



Female. Linear, cylindrical, minutely striated transversely, 

 ocellated, gradually diminishing towards the head, which is ob- 

 tuse and without papilla? ; also towards the tail, which is long 

 and conical. Mouth and anus as in the foregoing species. 

 Vulva just about the middle of the body. 



Alimentary canal much the same as in the foregoing species. 

 (Esophagus commencing with a cup-like, followed by a globular 

 dilatation, after which it becomes narrow, uniform in width, and 

 pursues a straight course back to the intestine. Peritoneal and 

 muscular sheaths of the oesophagus distinct from each other. 

 Intestinal sheath presenting a constriction just after its com- 

 mencement, which gives it a globular form, part of which only 

 is lined with the hepatic organ. Hepatic organ the same as in 

 the foregoing species. Organs of generation double, occupying 

 the middle third of the body ; form undetermined. 



Ocelli consisting of two globular bodies situated a short 

 distance from the head, and between (?) the peritoneal and mus- 

 cular sheaths of the oesophagus, opake, of a rich carmine colour 

 in their posterior three-fourths, and the anterior fourth or cor- 

 neal portion bluish opalescent. 



Size. ]-20th of an inch long and 1 -470th of an inch broad. 



Male. The same as the female, but with the posterior part of 

 the body terminating more abruptly and the tail more attenuated. 

 Testis, seminal duct, and penis the same as in the foregoing 

 species ; form of the testis undetermined. 



Hab. Silty clots of Oscillatoria floating in the salt-water 

 main drain of the town of Bombay. 



Loc. Island of Bombay. 



