NO. 3564 HEMISQUILLA ENSIGERA—STEPHENSON 13 
Californian. In significance tests in 5/6 cases, differences between 
Chilean and Australasian means are significant, and in one case 
(L/B rostrum) they just fail to be significant (p ca. 0.2). In 2/6 
cases differences between Chilean and Californian means are not 
significant, m one case the difference just fails to be significant, and 
in two cases differences are highly significant. 
Comparisons Between H. ensigera and H. braziliensis 
In deciding the status to be given to the three populations of H. 
ensigera, two considerations are relevant: 
(1) Distinctions between stomatopod taxa are becoming finer 
from the generic level downward (Seréne, 1962; Manning, 1963a). 
(2) H. ensigera is very close to H. braziliensis (Moreira, 1903a, b), 
the only other species of the genus. The only conspicuous difference 
in preserved material is that in H. braziliensis the lobes of the telson 
TABLE 3.—Significance of differences among three populations of H. ensigera 
No. of 
segments Inter- L/B L carapace L/B Leye 
of man- mediate rostrum | J rostrum cornea B cornea 
dibular | telson lobes 
palp 
Australasia t 1. 784 2. 870 1.377 1.651 3. 674 8. 088 
v. Chile Pp c. 0.1 ce. 0. O01 c. 0.2 chon ce. 0. 001 «0. 001 
Chile v. t 1. 527 0. 932 5. 220 5. 295 2. 032 0. 591 
California Dp 0. 2-0. 1 0. 4-0.3 (40. 001 (0. 001 (0. 05 0. 6-0. 5 
California t 11. 226 9.176 22. 680 15. 727 13. 538 6. 164 
v. Australasia Pp (0. 001 {(0. 001 ((0. 001 ((0. 001 ((0. 001 (0. 001 
are spinous (see Schmitt, 1940, figs. 18a, b). There are also possible 
differences in the form of the basal process of the uropods, in the color 
of live specimens, and in rostral shape (Moreira, 1905; Lemos de 
Castro, 1955). Because rostral shape is variable in H. ensigera and 
because there may be other statistical differences in variable features, 
most of the measurements upon H. ensigera were repeated upon the 
nine specimens of H. braziliensis in the USNM. 
The ranges of values show complete overlap with H. ensigera data, 
but comparison of mean values gives data as shown below. 
Number of segments of mandibular palp: 2.8889, cf. 2.7083 for 
nearest and largest H. ensigera value (Californian), difference highly 
significant (p <0.001). 
Intermediate lobes of telson: On the criteria adopted above, the 
number of lobes is identical with H. ensigera from Chile, being unity 
throughout; however, most or all specimens of H. braziliensis possess 
small lobes just lateral to the intermediates, similar to those here 
