274 SCIENTIFIC RESULTS OF THE 
Aphelodoris Antillensis, Bergh. 
(Cf. Malakozoélog. Blatter, N. 8., i, 1879, p. 107-113). 
12. a, ganglia buccalia, with b, ganglia gastro-wsophagalia; c, 
secondary ganglion,* 29°. 
13. Median part of two series of plates ; aa, innermost ; bb, second 
plates,* 23°. 
14. A large lateral plate,* 232. 
15. Outermost double plates of two series,* 77°. 
16. Outer part of two series with two ee aa, outermost,* 77° 
|. The sixth plate from the outer margin of the radula,* #7°. 
18. Outer part of three series with 3 plates ; a, outermost,”* 250, 
Polycera Hoibolli (MOll.). 
19. The genital papille, from the front. 
20 The same, from the side. 
21. First lateral plate, from above,* #* 
| 
JANUARY, 1880. 
ERRATA FOR PART I. 
On account of the inability of the author to read the proofs, 
and from certain obscurities in the manuscript, some errors crept 
into the first part of this paper, and the arrangement of the para- 
graphs was somewhat confused by the printer. 
The delicacy and beauty of the plates in their original state, 
having been destroyed by the printer, the present ones have been 
steel-surfaced, to avoid, if possible, a similar misfortune. 
The specific name Californiensis (Chromodoris) was substituted 
in the printed text for Calensis, which appeared on the plate and 
in the manuseript under the idea that the latter was intended 
merely as gn abbreviation. 
The following list of errata has been received from the author ; 
it is believed that the present concluding part of the paper is 
much less in need of such corrections. 
Page 128 ( 72), line 15: for Triopa modesta, B., read Triopha modesta, B. 
* 4129 ( 73), line 22: for mandibule read . Mandibule. 
‘ 180 ( 74), line 2: for genus read penis. 
132 ( 76), line 30 : a comma to be put before the parenthesis, and 
the comma after the parenthesis to be cancelled. 
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