22 NUDIBRANCHIATE GASTEROPODA. 



The hermaphrodite gland was only of a little lighter colour than the liver, which latter 

 it covered with a thin coating; in its lobes were found ripe oogene cells and spermatozoids. The duct 

 of the hermaphrodite gland projected freely from under the stomach, and ran along the inside of the 

 anterior genital mass. This latter is also provided with a strong, strongly adhesive, black wrap- 

 ping, penetrating deeply between its single parts; it is large, longish, 14™™ long by a breadth of 7'5 mm , 

 ami a height of 7 mm . On the inside was seen farthest back the ampulla of the duct of the herma- 

 phrodite gland which ampulla formed a couple of short windings; and before it was lying the black 

 seminal vesicle with its long, big duct, and on its fore end the large bundle of the seminal duct. When 

 stretched out the ampulla measured 8 mm by a diameter of 2 mm . The windings of the seminal duct that 

 were closely attached to each other by the black, cobweb-like connective tissue, measured, when 

 separated from each other and stretched out, 6 mm in length by a diameter almost everywhere of cr6 mra . 

 The seminal duct (fig. 9 a) opened in the top of the black, sacklike penis (praeputium) which was 

 fully 6 mm long by a diameter of 2'5 mm (fig. 9b.); the walls of the cavity were gray, and in the cavity 

 was lying the white, tapering glans (fig. 9), measuring, when stretched out, i5' ,,n \ and to the very 

 point pierced by the powerful seminal duct. The seminal vesicle (fig. 8 a) is , on account of its wrap- 

 ping, black, as is also its duct; it is bag-shaped, 6 mm long by a diameter of 2 - 3 mm , completely filled with 

 sperm; the powerful efferent duct (fig. 8b) is somewhat curved; when stretched out it is i4 mra long 

 by a diameter of 1 — r$ mm . The albuminous-mucous gland formed far the greater part of the anterior 

 genital mass; it was higher and thicker behind than before, showed chiefly longitudinal windings, and 

 was, when free of its black veil, of a yellowish white colour. The vulva and the end of the penis-bag 

 were especially strongly pigmented, and wrapped in black connective tissue. 



This Candiella, the largest one hitherto known, must certainly be a new species, what is also 

 indicated bv details in the outer and inner structure. 



Fam. Atthilidae, Bgh. N. fam. 



Forma corporis fere ut in Tritoniadis, subelongata, subquadrilateralis. Velum orale non parvum, 

 margine laevi, utriuque tentaculatim prominens; rhinophoria vagina margine bilobata retractilia, clavo 

 simpliciter perfoliato. Dorsum appendicibus paucis simplicibus (?) triseriatis praeditum; margine promi- 

 nulo serie simplici branchiarum arbusculiformium (?) instructo. Anus et porus renalis laterales. Po- 

 darium sat latum, antice rotundatum. 



Bulbus pharyngeus magnus. Maudibulae facie auteriori bulbi impositae, massa musculari forti 

 tectae, sat elongatae, processu masticatorio uullo, margine masticatorio laevi. Lingva lata, radula 

 multiseriata; rhachis dente augusto hamo elongato; pleurae multideutatae, dente intimo hamo denti- 

 culate reliquis hamiformibus edentulis. 



Hepar non ramificatum. Penis biennis. 



The Atthilidae 1 ) resemble, as to their common structure, the Tritoniae, but are, however, already 

 in the exterior sufficiently marked off from those. The frontal veil is quite different from that of 



1 W&cg, one of Sappho's female friends. 



