THE APODOUS HOLOTHUKIANS 



the two extremes all possible intergradations occur, and it seems almost beyond 

 question that the small specimens are the young, the large specimens the adults. 

 Ludwig had only 5 specimens before him for his description, and all 

 were over 48 mm. long, but he speaks of the very thin skin of the smallest and 

 of the presence of rare, scattered, perforated rods, like those which make up 

 the rosettes of Ankyroderma, though he did not find any rosettes or anchors. 



13 specimens from "Albatross" Station 2838, lat. 28 12' N., long. 115 09' W., 79 m. 



8 



1 specimen 



12 specimens 

 10 " 



50 " 



1 specimen 



5 specimens 

 2 



6 

 11 



1 specimen 



2 specimens 

 2 



2 



3. 



1 specimen 



1 



1 



4 specimens 



1 specimen 



2 specimens 

 4 " 



143 



W., 



u 

 a 

 a 



No locality. 



23 stations. 



2902, lat. 34 06' N., long. 120 02' W., 95 m. 



2971, lat. 34 20' 30" N., long. 119 37' 50" 



48 m. 



2972, lat. 34 18' 30" N., long. 119 41' W., 110 m. 



2973, lat. 34 19' 30" N., long. 119 44' 15" W., 



122 m. 



3068, lat. 47 55' 30" N., long. 122 27' W., 243 m. 

 3193, lat. 35 25' 50" N., long. 121 09' 10" W., 



288 m. 



3195, lat. 35 14' N., long. 127 07' W., 454 m. 



3196, lat. 35 02' 55" N., long. 120 59' 40" W., 



48 m. 



3307, lat. 53 55' N., long. 170 50' W., 1,859 m. 



3308, lat. 56 12' N., long. 172 07' W., 2,925 m. 

 3331, lat. '54 1' 40" N., long. 166 48' 50" W., 



630 m. 



3395, lat. 7 30' 36" N., long. 78 39' W., 1,314 m. 

 3431, lat. 23 59' N., long. 108 40' W., 1,791 m. 

 3478, lat. 36 44' 45" N., long. 120 57' W., 122 m. 

 3604, lat. 54 54' N., long. 168 59' W., 2,522 m. 



3666, lat. 36 45' N., long. 121 53', 122 m. 



3667, lat. 36 45' N., long. 121 52', 162 m. 

 3676 ; no record. 



3737, off Honshu Island, Japan, 295 m. 



3738, off Honshu Island, Japan, 300 m. 

 3775, off Honshu Island, Japan, 103 m. 



MOLPADIA MUSCULUS 



PLATE XI. 



Besides Ludwig 's type and two co-types, from Stations 3382, 3392, and 

 3432, off Panama and in the Gulf of California, 2,286-3,230 m., there are three 

 small specimens (27, 43, and 65 mm. in length) of a Molpadia from "Alba- 

 tross" Station 2393, lat. 28 43' N., long. 87 14' 30" W., 945 m., which answer 

 well to his description of Ankyroderma spinosum, except for color. All these 

 specimens are very spiny, and the anchors and rosettes are numerous. The 

 color is pale brown, but under the microscope a considerable number of the 

 small reddish-brown ellipses are to be seen. A fourth specimen from "Alba- 



