272 PAPERS FROM TORTUGAS LABORATORY vol. xxxiv 



the same general region, but in contact with the first. The two may meet along a 

 line 2 or more inches in length with no overlapping and no gaps between. 



The eggs adhere to the substratum by a short tuft of chorionic filaments at 

 the animal pole. They are flattened spheroids slightly distorted at the point of 

 attachment, about 0.6 mm. in greater diameter, with a single large yellow oil 

 globule one-quarter the diameter of the egg, which persists in almost undimin- 

 ished size till the yolk sac is greatly reduced. W. H. L. 



The collection contains 13 specimens, 65 to no mm. long. The following pro- 

 portions and enumerations are based on 3 specimens, 65, 87, and no mm. long: 

 Head 4.0, 4.4, 5.0; depth 4.15, 4.3, 4.5. Eye in head 3.4, 3.5, 3.9; maxillary 2.4, 2.5, 

 2.6; pectoral 0.9, 1.0, 1.2. D. XII,2o, XII,20, XIL20; A. 11,20, II,2i, 11,22; P. 15, 



West Indies and Florida. S. F. H. 



Acanthemblemaria aspera (Longley) 



Paremblemaria aspera Longley, Carnegie Inst. Wash. Year Book No. 26, 1927, p. 224 — 



Tortugas, Florida. 

 Acanthemblemaria arborescens Beebe and Tee- Van, Zoologica, vol. 10, 1928, p. 244, with 



fig. — Port-au-Prince, Haiti. 

 Acanthemblemeria spinosa Longley (not of Metzelaar), Carnegie Inst. Wash. Year Book 



No. 30, 193 1, p. 385. 

 Acanthemblemaria aspera Longley and Hildebrand, Carnegie Inst. Wash. Pub. 517, 1940, 



p. 271, fig. 23. 



Acanthemblemaria spinosa Metzelaar 



Acanthemblemaria spinosa Metzelaar, Trop. atl. Vissch., 1919, p. 159, fig. 53 — Curacao. 

 ? Acanthemblemaria variegata Beebe and Tee- Van, Zoologica, vol. 10, 1928, p. 247, with 

 fig. — Port-au-Prince Bay, Haiti. 



The variation in fin formulas in 10 of Beebe and Tee-Van's specimens of 

 Acanthemblemaria variegata is: D. XX to XXII,i3 to 15; A. II,2i to 24. 



Though segregation of A. spinosa and A. aspera is impossible on fin for- 

 mulas alone, the two nevertheless are quite distinct. The males are quite unlike. 

 In color the males of spinosa are like their females and much like those of aspera. 

 Their ocular cirri, though larger than those of females, are still relatively small 

 and simple, and not entirely unbranched. Their crania have the many superior 

 spines of their consorts rather than the few of aspera. 



The description and figure show that the type of Acanthemblemaria arbo- 

 rescens obviously was a male. Beebe and Tee-Van (see citation above) were un- 

 aware of the sexual dimorphism in the species, as their 4 specimens were all 

 males. Their type of variegata was a female, and in color like the females of 

 aspera. As there was no significant difference in the fin formulas, and as the 

 two species were taken in close proximity to each other, and on the same day, I 

 mistakenly considered them a single species. The evidence, however, was entirely 

 circumstantial and the error inexcusable. Yet variegata, when spinosa is better 

 known (and I have examined the types of both), will probably prove to be a 



