i 



536 Bashford Dean Memorial Volume 



about 20 and 45 mm. in length, without yolk sacs, bought in the Tokyo market January 22, 

 1914. These and other embryos from this jar are badly crumpled, hence the "about" for 

 this and the three other lots. In this same jar are four embryos about 15, 1 8, 20 and 25 mm. 

 "over all", "from Tokyo market February 4, 1913". In the same receptacle are seven 

 embryos ranging from about 60-130 mm. in length "Bought Tokyo Market April 4, 

 1913". In his notebook Dean states that he got three blastulae on April 10 (year not 

 noted). Next and last of the four Columbia University lots are five embryos measuring 

 about 23, 25, 30, 43 and 47 mm. bought on April 23, 1917- 



The remainder of the available data is also from Dean's notebook. On April 25 he 

 records seven eggs with embryos — 165, 175, 185, 195, 205, 210 and 250 mm. in length. 

 Then in the writing of his unkno'^Ti note-taker and correspondent, judged to be a Japanese, 

 are recorded eggs from the oviducts of three females each measuring 1770 mm. The 

 first taken April 25 had seven eggs with, embryos (not measured), the second (of the same 

 date) had five "broken eggs" in the oviduct: the third, taken April 27, had in the oviduct 

 three "mature" eggs (two broken). Next in Dean's writing is this record "4 embs. large, 

 taken about May 1, 1905". These measured in millimeters 317, 331 (yolk sac 111 x 100), 

 352, 390 (yolk 100 x 70). Then I find in Dean's writing a record,"? May 23, 1906," of five 

 embryos (no measurements) firom a 1390'mm. female. The next records come from late in 

 the calendar year and are so important that they must be given in a separate paragraph. 



Four eggs were taken from the uteri of a female captured in the Odowara Bank on or 

 about October 1, 1905. This record is based on three separate notes in Dean's writing on 

 three separate pages of his notebook. No one of these, no two would establish this fact; 

 but when aU three are studied together, date, place, and number of eggs all tie up into 

 this definite record. Three of these eggs are noted as "oblong eggs, 2 drawn, in r. oviduct, 

 small vs.ind egg (drawnl in opposite [1.] oviduct, stage early [small pencil sketch] probably 

 gastrula". For the two "oblong eggs", see Figures 2 and 3, plate I. Apparently the 

 oblong egg with the probable gastrula, shown in the pencil sketch (Text'figure 26), was 

 not drav^Ti. For the "small wind egg" see Figure 51, plate V. 



Among Dean's loose papers, I have found a rough sketch in water color of an egg and 

 embryo labelled fin a hand other than Dean's) ^'Chlamydoselachus angmneus. Egg taken 

 at out of Okinose, Sagami Sea. (Depth 360 fms.) December "06". The egg and embryo 

 were presumably drauTi natural size. The ellipsoidal yolk measured 122 x 69 mm., and the 

 embryo 55 mm. — when taken in December! 



Here let us recapitulate the dates throughout the whole calendar year on which 

 embryos of the sizes noted have been taken: "Early Jan.", six specimens measuring 11.5 

 to 20 mm.: April 4, seven — 60 to 130 mm.; April 10, three blastulae; April 23, five 

 embryos — 23 to 47 mm.; April 25, seven, 165 to 250 mm.: April 25 and April 27, fifteen 

 eggs and embryos in three uteri; May 1, four embryos — 317 to 390 mm. ; May 23, five — no 

 measurements; October 1, three eggs — probably blastulae; December '06, one embryo 

 55 mm. — m length. 



