202 44 



ing into the back part of the first stomach. The principal liver opens to the left into 

 the stomach in a quite similar manner. This latter was lengthily conical , of a length of 

 4 cm , and reached to the region of the sixth pair of papillae; anteriorly it was 7 mm broad, 

 posteriorly its diameter was only O'ö 11 ™; it gives off branches to the third, fourth, and fifth 

 pairs of papillae, which branches still at the base of the papillae had a diameter of l mm , 

 and showed a comparatively not wide opening. The liver was redbrown, its relations was 

 otherwise as before described (comp. 1. c. pp. 297, 306). 



The ventricle of the heart had a length of 3'5 mm . The pericardio-renal organ (the 

 renal syrinx) was short-pyriform, l - 5 mm long. 



The light yellow hermaphrodite gland situated between the liver branches- of 

 the third pair of papillae , stretched both before and behind half-way to the next liver- 

 branch; it had a length of about 14 — lo 1 ™, by a breadth of 5 — 6 mm , and was formed of 

 about 20 — 26 lobes arranged in a single layer; these lobes had a diameter ofO'75 — l-5 mm . 

 The hermaphrodite duct formed as usual an ampulla. The anterior genital mass was 

 rather large, 6 mm high, by a length of 5 and 10 mm , and a thickness of 4 mm ; more than 

 half part of it was formed by the powerful penis. The long seminal duct, which winds in 

 close-lying, brownish yellow coils along the inside of the mucous-albuminous gland, passes 

 into a whitish continuation rising along the hinder side of the penis to its top (comp. I.e. 

 Taf. XXXVII, Fig. 19). The penis was bag-shaped, of a length of 6 mm , somewhat curved, 

 and rather thick-walled. This organ, having been cut open, showed on the inside quite 

 the same structure in the two large specimens; in the upper part ran, along one side, two 

 low rolls issuing above at the opening of the seminal duct, and below passing into each 

 other; they, as well as the part between them, are transversely furrowed; no trace, 

 however, was found of the armature of hooks, otherwise found in the Bornellae, and the 

 cuticle was almost quite smooth. I have, however, once before found the same relation 

 (comp. I. c. 1890. p. 889). The small mucous albuminous gland was yellowish and 

 whitish; the short-stalked seminal vesicle as usual. 



2. Bornella excepta, Bgh. 



R. Berch, report on the Nudibranchiata (Challenger). I.e. 1884. p. 36— 43. PI. VII, Fig. 13—22; pi. VIII. Fig. 1—13. 



PI. Ill, Figs. 4— 5. 



One specimen of this form was taken together with specimens of the preceding 

 species at Koh Kram, and was put together with these specimens. 



The colour may consequently be supposed to have been scarcely different from 

 that of the preceding species. The specimen, kept in spirit, was somewhat more whitish 



