1889.] ON THE ANATOMY OF GONATUS FABRICII. 117 
EXPLANATION OF THE PLATES. 
Puare XI. 
Fig. 1, 1a. Diplommatina lutea, p. 112. 
2, 2a. platycheilus, p. 112. 
3, 3a, —— rubella, p. 118. 
4, 4a. aurea, p. 113. 
F crassilabris, p. 115. 
6. albata, p. 113. 
10,104,100, 10c. Hungerfordia pelewensis, p. 115. 
Puate XII. 
Fig. 7, 74,7 b. Diplommatina gibboni, p. 114. 
8, 8a. patula, p. 114. 
9, 9a. strigata, var. kororensis, p. 115. 
11, lla, 11, lle. Helix (Endodonta) kororensis, p. 116. 
12, 12 a, 12, 12¢. (——) fusco-zonata, p. 116. 
4. Observations on the Anatomy of a rare Cephalopod 
(Gonatus fabricit). By Wittram E. Hoye, M.A. 
(Oxon.), F.R.S.E. (Communicated by Professor G. 
B. Howss, F.L.S., F.Z.S.) 
{Received February 27, 1889.] 
(Plates XIII. & XIV.) 
Contents. 
I. Introduction, p. 117. 
II. General Disposition of the Organs, p. 119. 
III. The Cartilages, p. 119. 
IV. The Pen, p. 121. 
V. The Muscles, p. 124. 
VI. The Nervous System and Sense-Organs, p. 124. 
VII. Digestive Organs, p. 125. 
VIII. Circulatory Organs, p. 126. 
IX. Respiratory Organs, p. 127. 
X. Excretory and Generative Organs, p. 127. 
XI. The Funnel-Organ, p. 128. 
XII. General Conclusions, p. 131. 
XIII. Explanation of the Plates, p. 134. 
I. Introduction. 
The specimens upon which the following investigation is based 
were as follows :— 
1. Three immature examples obtained during the ‘ Valorous’ Expe- 
dition, varying ia length from 30 to 50 millim. 
2. A number of fragments, representing about a dozen individuals, 
taken by my friend Mr. Robert Gray, of Peterhead, from the stomachs 
of a Bottle-nosed Whale (Hyperoodon rostratus) and a Narwhal. 
These were for the most part only arms, from which all the hooks 
and suckers had been removed, with the buccal mass included 
Proc. Zoot. Soc.—1889, No. IX. 9 
