TEMNOPLEURUS REEVESII. 313 



the height of the test. This is of little importance however as toreumaticus is 

 very variable in that particular. The coloration seems of more importance, 

 but the material at hand shows that the light and dark extremes intergrade. 

 Perhaps the very light western specimens may be recognized as a subspecies 

 or variety, Perezi. Aside from the remarkable difference in color, the Persian 

 and Arabian specimens do not differ constantly in any particular from specimens 

 from the East Indies, China, and Japan. 



The specimen in the "Albatross" collection was taken at Nanao Beach, 

 Japan. 



Temnopleurus Reevesii Mrtsn. 



Toreumatica Reevesii Gray, 1855. Proc. Zool. Soc. London, p. 39. 

 Temnopleurus Reynaudi A. Agassiz, 1872. Rev. Ech., pt. 1, p. 166. 

 Temnopleurus Reevesii Mortensen, 1904. Dan. Exp. Siam: Ech., p. 62. 



V. 



Although a large series of this species is at hand, they show so little diversity, 

 that little need be said about them. Since this species is one of the very few 

 Temnopleuridse in which an ocular is insert, it will be of interest to record the 

 conditions of the oculo-genital ring as shown by the fifty specimens, ranging from 

 7 to 43 mm. h. d., which have been examined. Of the fifty, eleven have ocular I 

 insert, and eight others have it almost in. This would seem like a small per- 

 centage on which to base the statement that it is a species character to have 

 ocular I insert, but when the specimens are grouped according to size, interesting 

 information in regard to this character is obtained. There are eighteen speci- 

 mens less than 14 mm. in diameter; i. e., since our largest specimen is 43 mm. 

 h. d., less than one third grown. Of these eighteen, only three have ocular I 

 insert, or say 17%; one other has it almost in, so it may be noted that 78% 

 show no indication of the character. There are twenty-seven specimens from a 

 third to a half grown (14-21 mm. inclusive) and of these, five have ocular I 

 insert, or say 18? %; but six others have it almost in, so that less than 60% show 

 no indication of the character. There are only five specimens more than half 

 grown; of these three (60%) have ocular I insert and one other has it almost in, 

 and thus only 20% show no indication of the character. The largest specimen 

 (43 mm. h. d.) has ocular I very broadly insert. Is it not fair from these data 

 to assume that having ocular I insert is a species character, assumed late in 

 development and not usually acquired until the individual is more than half 

 grown? 



This species was taken by the "Albatross" at the following stations: 



