AGLAJIDA, GASTROPTERID®, RUNCINID®. 239 
Family AGLAJID. 
Genus AGLAJA Renieri (page 44). 
The following forms were overlooked in the preparation of this 
monograph : 
A. ORBIGNYANA Rochebrune. PI. 54, fig. 3. 
Body thick, ovoid; foot short, sub-bipartite below, blackish stri- 
* ated with radiating strize ; posterior lobes visibly elevated, of a black- 
violet, ornamented longitudinally with irregular interrupted yellow- 
ish lines; margins of mantle undulated, quite thick, greenish gray. 
Length 14, width 11 mill. (Rochebr.). 
Road of Santiago, Cape Verde Archipelago (Cessac). 
Posterobranchus orbignyanus RocuEsr., Bull. Soc. Philomath., 
1881, p. 28; Nouv. Arch. du Mus., 1881, p. 265, pl. 18, f. 5. 
A. TRICOLORATA Ren. (p. 45). 
Add the synonym: Doridium achates Drsu., Traité Elém. de 
Conch., Expl]. des Planches, p. 58; Atlas de Conchyliologie, pl. 91, 
f. 3-5. 
Family GASTROPTERID (Vol. xvi, p. 39). 
GASTROPTERON MECKELII (?) is reported by Dall from east Flor- 
ida and Guadalupe, in Catal. Mar. Moll. S.-E. U.S., Bull. 37 U.S. 
Mus., p. 88. 
Family R UNCINIDZ (Vol. xvi, p.171). 
PELTA CAPREENSIS Mazzarelli, Atti Acc. Napoli, vi, No. 4, p. 3, 
from the Gulf of Naples, is a new species of Runcina, of which the 
description is inaccessible to me. 
ERRATA. 
P. 89. After T. Robertsi, read pl. 55, figs. 5, 6. 
P. 96. After T. Tryoniana, read pl. 57, figs. 24-27. 
P. 155. Omit f. 35 from references in fifth line from bottom. 

