32 bulletin: museum of comparative zoology. 



decided green. There are a large number of brilliant yellow spots in the radial 

 canals and tentacle bulbs. This form is rare at the Tortugas, Florida. It was 

 found by Fewkes, 1883, at the Bermudas. 



STOMOTOCA, Agassiz, L., 1862. 

 Stomotoca australis, nov. sp. 



Fig. 3, Plate 1. 



Specific Characters. — The bell is about 2.5 mm. in height, and there is a 

 well-developed, solid, conical projection upon the aboral surface of the umbrella. 

 The bell walls are thin. There are 2 large diametrically opposed tentacles, 

 which are situated at the foot of two of the radial canals. The basal bulbs of 

 these tentacles are hollow, and are long and conical. In addition to the two 

 long tentacles there are two rudimentary tentacle bulbs situated at the bases of 

 the radial canals 90° away from the long tentacles. There are 8 ectodermal ocelli. 

 4 of these are situated upon the centrifugal surfaces of the 4 tentacle bulbs, 

 and the 4 others occupy intermediate positions upon the bell margin. The 

 velum is wide. The radial canals and circular tube are broad, and their edges 

 are smooth and simple. The proboscis is short and urn-shaped, and extends 

 about halfway from the inner apex of the bell cavity to the velar opening. 

 The gonads occupy complexly folded and corrugated regions upon the sides of 

 the stomach. The proboscis and tentacle bulbs are yellow, or greenish yellow. 

 The ocelli are orange. The entodermal core of the proboscis often displays a 

 faint orange tinge. This species is common throughout the summer at the 

 Tortugas, Florida. 



Stomotoca rugosa. 



Stomotoca apicata, Fewkes, J. W., 1881, BuU. Mus. Comp. Zoul,, Vol. VIII. p. 152, 



Pi. II. Figs. 1, 4, 9. 

 Amphinema apicatum, Brooks, W. K., 1883, Stud. Johns Hopkins Biol. Lab., VoL 



II. p. 473. 



This species has usually been confounded with Stomotoca apicata, L. Agas- 

 siz. Stomotoca apicata, L. Agassiz, is, however, distinguished from S. rugosa 

 by the circumstance that the entoderm of the proboscis in the male is green, 

 or straw-colored, and in the female, dull ochre ; and the tentacle bulbs in the 

 male are purple, and in the female, dull ochre. In the form described by 

 Fewkes and Brooks, for which we propose the name S. rugosa, the entoderm 

 of the proboscis and of the tentacle bulbs is always brick-red in both sexes. 



Specific Characters. — The bell is 5 mm. high and 3 mm. broad. It bears 

 an apical projection which in some individuals is long and slender and in 

 others short and blunt. The substance of this projection is solid throughout. 

 There are 2 long, well-developod tentacles and 14 small rudimentary (tnes. 



