NO. 2 DEICHMANN : HOLOTHURIOIDEA ; PART II, ASPIDOCHIROTA 309 



5. More or less dark grayish-brown forms 6 



6. Dorsal spots large, general impression a dark tortoise-shell pat- 

 tern. Gulf of California. . zacae (Deichmann) forma typica 



6. Dorsal spots reduced to a narrow area around some of the 

 dorsal papillae. Color gray-brown, with a faded area around 

 the appendages, giving a general dull, mottled effect. Waters 

 around Cedros and Guadalupe Islands, west coast of Lower 

 California. . . . zacae (Deichmann) forma iota n.f. 



Vaneyothuria zacae (Deichmann) formae typica, azacae, 



n. f., and iota, n. f. 

 PI. 5, figs. 1-12 



Holothuria zacae Deichmann, 1937, p. 168, text-fig. 1, nos. 21-28. 



Diagnosis: As for the genus, but with two rows of dark spots on 

 the back, in forma iota reduced to a dark area around some of the dorsal 

 papillae. Tables fragile, mostly with marginal teeth ; in the typical form, 

 sometimes with larger tables near the appendages, with a partly reduced 

 spire ending in four blunt rods. Inner layer narrow buttons, often 

 twisted, incomplete, with a tendency to become smaller and more 

 regular with advancing age — lacking in forma azacae, which in addi- 

 tion is unusually pale except for the dark spots and the dark tipped 

 appendages. 



Types: The typical form is in the Museum of Comparative Zoo- 

 logy; forma azacae and forma iota are in the Allan Hancock Foundation. 



Type localities: The typical form was taken in Santa Ines Bay, 

 Gulf of California; forma azacae came from the Galapagos Islands and 

 forma iota from off Cedros Island, west coast of Lower California. 



Distribution: The typical form is common in the Gulf of Cali- 

 fornia; one record from Ecuador (?) ; and none between these two 

 localities; forma azacae appears to be restricted to the Galapagos Is- 

 lands; while forma iota is known from off Cedros and Guadelupe 

 Islands. 



Depth: Most records are from about 50 fathoms down to 120 

 fathoms; the few specimens of the typical form, from 10 fathoms and 

 "shore," look definitely beach worn. 



Specimens examined: The type and 20 specimens of the typical 

 form ; 15 of forma azacae and four of forma iota. 



Remarks: All the material consists of large individuals, mostly 

 about 20 cm in length, with a few measuring only 15 cm. As the ma- 

 terial of forma iota is much stouter and strongly contracted, it probably 



